diff --git a/src/components/Actions.tsx b/src/components/Actions.tsx
index a1a6b67..25916dd 100644
--- a/src/components/Actions.tsx
+++ b/src/components/Actions.tsx
@@ -130,7 +130,7 @@ const ReactionAction = (props: { event: NostrEvent }) => {
         }}
       >
         <button
-          class="h-4 w-4"
+          class="size-4"
           onClick={handleReaction}
           disabled={publishReactionMutation.isPending}
         >
@@ -156,7 +156,7 @@ const ReactionAction = (props: { event: NostrEvent }) => {
         >
           <button
             ref={emojiPickerPopup.targetRef}
-            class="h-4 w-4"
+            class="size-4"
             onClick={() => emojiPickerPopup.open()}
           >
             <Plus />
@@ -217,7 +217,7 @@ const RepostAction = (props: { event: NostrEvent }) => {
       }}
     >
       <button onClick={handleRepost} disabled={publishRepostMutation.isPending}>
-        <span class="flex h-4 w-4">
+        <span class="flex size-4">
           <ArrowPathRoundedSquare />
         </span>
       </button>
@@ -359,11 +359,11 @@ const Actions: Component<ActionProps> = (props) => {
       const succeeded = results.filter((res) => res.status === 'fulfilled').length;
       const failed = results.length - succeeded;
       if (succeeded === results.length) {
-        window.alert(i18n()('post.deletedSuccessfully'));
+        window.alert(i18n.t('post.deletedSuccessfully'));
       } else if (succeeded > 0) {
-        window.alert(i18n()('post.failedToDeletePartially', { count: failed }));
+        window.alert(i18n.t('post.failedToDeletePartially', { count: failed }));
       } else {
-        window.alert(i18n()('post.failedToDelete'));
+        window.alert(i18n.t('post.failedToDelete'));
       }
     },
     onError: (err) => {
@@ -374,7 +374,7 @@ const Actions: Component<ActionProps> = (props) => {
   const otherActionsPopup = useContextMenu(() => ({
     menu: [
       {
-        content: i18n()('post.copyEventId'),
+        content: i18n.t('post.copyEventId'),
         onSelect: () => {
           navigator.clipboard
             .writeText(noteEncode(props.event.id))
@@ -382,31 +382,31 @@ const Actions: Component<ActionProps> = (props) => {
         },
       },
       {
-        content: i18n()('post.showJSON'),
+        content: i18n.t('post.showJSON'),
         onSelect: () => {
           setModal('EventDebugModal');
         },
       },
       {
-        content: i18n()('post.showReposts'),
+        content: i18n.t('post.showReposts'),
         onSelect: () => {
           setModal('Reposts');
         },
       },
       {
-        content: i18n()('post.showReactions'),
+        content: i18n.t('post.showReactions'),
         onSelect: () => {
           setModal('Reactions');
         },
       },
       {
         when: () => props.event.pubkey === pubkey(),
-        content: <span class="text-red-500">{i18n()('post.deletePost')}</span>,
+        content: <span class="text-red-500">{i18n.t('post.deletePost')}</span>,
         onSelect: () => {
           const p = pubkey();
           if (p == null) return;
 
-          if (!window.confirm(i18n()('post.confirmDelete'))) return;
+          if (!window.confirm(i18n.t('post.confirmDelete'))) return;
           deleteMutation.mutate({
             relayUrls: config().relayUrls,
             pubkey: p,
@@ -428,21 +428,21 @@ const Actions: Component<ActionProps> = (props) => {
             props.onClickReply();
           }}
         >
-          <span class="flex h-4 w-4">
+          <span class="flex size-4">
             <ChatBubbleLeft />
           </span>
         </button>
         <RepostAction event={props.event} />
         <ReactionAction event={props.event} />
         <button type="button" onClick={() => setModal('ZapRequest')}>
-          <span class="flex h-4 w-4 text-fg-tertiary hover:text-r-zap">
+          <span class="flex size-4 text-fg-tertiary hover:text-r-zap">
             <Bolt />
           </span>
         </button>
         <button
           ref={otherActionsPopup.targetRef}
           type="button"
-          class="h-4 w-4 shrink-0 text-fg-tertiary hover:text-fg-tertiary/70"
+          class="size-4 shrink-0 text-fg-tertiary hover:text-fg-tertiary/70"
           onClick={() => otherActionsPopup.open()}
         >
           <EllipsisHorizontal />
diff --git a/src/components/DomainTransferInfo.tsx b/src/components/DomainTransferInfo.tsx
index 1dd341c..fba7611 100644
--- a/src/components/DomainTransferInfo.tsx
+++ b/src/components/DomainTransferInfo.tsx
@@ -17,24 +17,24 @@ const DomainTransferInfo: Component<{ children: JSX.Element }> = (props) => {
       when={isPermittedDomain(window.location) || showContent()}
       fallback={
         <div class="flex h-svh w-screen shrink-0 flex-col items-center justify-center border-b border-border bg-bg-tertiary text-fg">
-          <h3 class="text-2xl font-bold">{i18n()('domainTransfer.announcementHead')}</h3>
-          <div>{i18n()('domainTransfer.announcementDescription')}</div>
+          <h3 class="text-2xl font-bold">{i18n.t('domainTransfer.announcementHead')}</h3>
+          <div>{i18n.t('domainTransfer.announcementDescription')}</div>
           <SafeLink class="text-lg text-link underline" href="https://rabbit.syusui.net/" />
           <SafeLink
             class="mt-4 text-sm text-link underline"
             href="https://scrapbox.io/nostr/Rabbit#659be5fa1246d700005facb8"
           >
-            {i18n()('domainTransfer.howToMigrateSettings')}
+            {i18n.t('domainTransfer.howToMigrateSettings')}
           </SafeLink>
           <button
             type="button"
             class="mt-4 flex items-center text-fg-secondary"
             onClick={() => setShowContent(true)}
           >
-            <span class="inline-block h-5 w-5">
+            <span class="inline-block size-5">
               <XMark />
             </span>
-            {i18n()('domainTransfer.close')}
+            {i18n.t('domainTransfer.close')}
           </button>
         </div>
       }
diff --git a/src/components/NotePostForm.tsx b/src/components/NotePostForm.tsx
index 398f1ee..4ee4e95 100644
--- a/src/components/NotePostForm.tsx
+++ b/src/components/NotePostForm.tsx
@@ -112,10 +112,10 @@ const NotePostForm: Component<NotePostFormProps> = (props) => {
   const placeholder = (mode: NotePostFormProps['mode']) => {
     switch (mode) {
       case 'reply':
-        return i18n()('posting.placeholderReply');
+        return i18n.t('posting.placeholderReply');
       case 'normal':
       default:
-        return i18n()('posting.placeholder');
+        return i18n.t('posting.placeholder');
     }
   };
 
@@ -163,7 +163,7 @@ const NotePostForm: Component<NotePostFormProps> = (props) => {
 
       if (failed.length > 0) {
         const filenames = failed.map((f) => f.name).join(', ');
-        window.alert(i18n()('posting.failedToUploadFile', { filenames }));
+        window.alert(i18n.t('posting.failedToUploadFile', { filenames }));
       }
     },
   }));
@@ -205,7 +205,7 @@ const NotePostForm: Component<NotePostFormProps> = (props) => {
     if (publishTextNoteMutation.isPending) return;
 
     if (/nsec1[0-9a-zA-Z]+/.test(text())) {
-      window.alert(i18n()('posting.forbiddenToIncludeNsec'));
+      window.alert(i18n.t('posting.forbiddenToIncludeNsec'));
       return;
     }
 
@@ -353,7 +353,7 @@ const NotePostForm: Component<NotePostFormProps> = (props) => {
     <div class="p-1">
       <Show when={props.replyTo != null}>
         <div>
-          {i18n()('posting.replyToPre')}
+          {i18n.t('posting.replyToPre')}
           <For each={notifyPubkeys()}>
             {(pubkey, index) => (
               <>
@@ -362,7 +362,7 @@ const NotePostForm: Component<NotePostFormProps> = (props) => {
               </>
             )}
           </For>
-          {i18n()('posting.replyToPost')}
+          {i18n.t('posting.replyToPost')}
         </div>
       </Show>
       <form class="flex flex-col gap-1" onSubmit={handleSubmit}>
@@ -371,7 +371,7 @@ const NotePostForm: Component<NotePostFormProps> = (props) => {
             ref={contentWarningReasonRef}
             type="text"
             class="rounded-md border border-border bg-bg ring-border placeholder:text-fg-secondary focus:border-border focus:ring-primary"
-            placeholder={i18n()('posting.contentWarningReason')}
+            placeholder={i18n.t('posting.contentWarningReason')}
             maxLength={32}
             onInput={(ev) => setContentWarningReason(ev.currentTarget.value)}
             value={contentWarningReason()}
@@ -406,7 +406,7 @@ const NotePostForm: Component<NotePostFormProps> = (props) => {
               }}
               onClick={() => close()}
             >
-              <span class="inline-block h-5 w-5 text-fg-secondary/70">
+              <span class="inline-block size-5 text-fg-secondary/70">
                 <XMark />
               </span>
             </button>
@@ -442,8 +442,8 @@ const NotePostForm: Component<NotePostFormProps> = (props) => {
               'p-[6px]': mode() === 'reply',
             }}
             type="button"
-            aria-label={i18n()('posting.contentWarning')}
-            title={i18n()('posting.contentWarning')}
+            aria-label={i18n.t('posting.contentWarning')}
+            title={i18n.t('posting.contentWarning')}
             onClick={() => {
               setContentWarning((e) => !e);
               contentWarningReasonRef?.focus();
@@ -464,8 +464,8 @@ const NotePostForm: Component<NotePostFormProps> = (props) => {
               'p-[6px]': mode() === 'reply',
             }}
             type="button"
-            title={i18n()('posting.uploadImage')}
-            aria-label={i18n()('posting.uploadImage')}
+            title={i18n.t('posting.uploadImage')}
+            aria-label={i18n.t('posting.uploadImage')}
             disabled={fileUploadDisabled()}
             onClick={() => fileInputRef?.click()}
           >
@@ -482,8 +482,8 @@ const NotePostForm: Component<NotePostFormProps> = (props) => {
               'w-7': mode() === 'reply',
             }}
             type="submit"
-            aria-label={i18n()('posting.submit')}
-            title={i18n()('posting.submit')}
+            aria-label={i18n.t('posting.submit')}
+            title={i18n.t('posting.submit')}
             disabled={submitDisabled()}
           >
             <PaperAirplane />
diff --git a/src/components/Post.tsx b/src/components/Post.tsx
index 62fd859..fd50a7c 100644
--- a/src/components/Post.tsx
+++ b/src/components/Post.tsx
@@ -36,7 +36,7 @@ const Post: Component<PostProps> = (props) => {
       <div class="flex w-full gap-1">
         <button
           type="button"
-          class="author-icon h-10 w-10 shrink-0 overflow-hidden rounded"
+          class="author-icon size-10 shrink-0 overflow-hidden rounded"
           onClick={(ev) => {
             ev.preventDefault();
             props.onShowProfile?.();
@@ -50,7 +50,7 @@ const Post: Component<PostProps> = (props) => {
                     src={thumbnailUrl(url, 'icon')}
                     alt="icon"
                     referrerpolicy="no-referrer"
-                    class="h-full w-full object-cover"
+                    class="size-full object-cover"
                   />
                 )}
               </LazyLoad>
@@ -113,8 +113,8 @@ const Post: Component<PostProps> = (props) => {
                 setShowOverflow((current) => !current);
               }}
             >
-              <Show when={!showOverflow()} fallback={i18n()('post.hideOverflow')}>
-                {i18n()('post.showOverflow')}
+              <Show when={!showOverflow()} fallback={i18n.t('post.hideOverflow')}>
+                {i18n.t('post.showOverflow')}
               </Show>
             </button>
           </Show>
diff --git a/src/components/column/BookmarkColumn.tsx b/src/components/column/BookmarkColumn.tsx
index a340e01..501a71c 100644
--- a/src/components/column/BookmarkColumn.tsx
+++ b/src/components/column/BookmarkColumn.tsx
@@ -33,7 +33,7 @@ const BookmarkColumn: Component<BookmarkColumnDisplayProps> = (props) => {
     <Column
       header={
         <BasicColumnHeader
-          name={props.column.name ?? i18n()('column.bookmark')}
+          name={props.column.name ?? i18n.t('column.bookmark')}
           icon={<BookmarkIcon />}
           settings={() => <ColumnSettings column={props.column} columnIndex={props.columnIndex} />}
           onClose={() => removeColumn(props.column.id)}
diff --git a/src/components/column/ChannelColumn.tsx b/src/components/column/ChannelColumn.tsx
index ebf0159..d6f6d9e 100644
--- a/src/components/column/ChannelColumn.tsx
+++ b/src/components/column/ChannelColumn.tsx
@@ -44,7 +44,7 @@ const ChannelColumn: Component<ChannelColumnProps> = (props) => {
     <Column
       header={
         <BasicColumnHeader
-          name={props.column.name ?? i18n()('column.channel')}
+          name={props.column.name ?? i18n.t('column.channel')}
           icon={<ChatBubbleLeftRight />}
           settings={() => <ColumnSettings column={props.column} columnIndex={props.columnIndex} />}
           onClose={() => removeColumn(props.column.id)}
diff --git a/src/components/column/Column.tsx b/src/components/column/Column.tsx
index 0ee5630..f45572b 100644
--- a/src/components/column/Column.tsx
+++ b/src/components/column/Column.tsx
@@ -73,10 +73,10 @@ const Column: Component<ColumnProps> = (props) => {
                   class="flex w-full items-center gap-1"
                   onClick={() => timelineState?.clearTimeline()}
                 >
-                  <div class="inline-block h-4 w-4">
+                  <div class="inline-block size-4">
                     <ArrowLeft />
                   </div>
-                  <div>{i18n()('column.back')}</div>
+                  <div>{i18n.t('column.back')}</div>
                 </button>
               </div>
               <div class="scrollbar flex max-h-full flex-col overflow-y-scroll scroll-smooth pb-16">
diff --git a/src/components/column/ColumnSettings.tsx b/src/components/column/ColumnSettings.tsx
index fca6fb1..835da29 100644
--- a/src/components/column/ColumnSettings.tsx
+++ b/src/components/column/ColumnSettings.tsx
@@ -42,7 +42,7 @@ const ColumnSettings: Component<ColumnSettingsProps> = (props) => {
 
   return (
     <div class="flex flex-col border-t border-border">
-      <ColumnSettingsSection title={i18n()('column.config.columnWidth')}>
+      <ColumnSettingsSection title={i18n.t('column.config.columnWidth')}>
         <div class="scrollbar flex h-9 gap-2 overflow-x-auto">
           <For each={['widest', 'wide', 'medium', 'narrow'] as const}>
             {(width) => (
@@ -56,7 +56,7 @@ const ColumnSettings: Component<ColumnSettingsProps> = (props) => {
                 }}
                 onClick={() => setColumnWidth(width)}
               >
-                {i18n()(`column.config.${width}`)}
+                {i18n.t(`column.config.${width}`)}
               </button>
             )}
           </For>
@@ -65,29 +65,29 @@ const ColumnSettings: Component<ColumnSettingsProps> = (props) => {
       <div class="flex h-10 items-center gap-2">
         <button
           class="py-4 pl-2"
-          title={i18n()('column.config.moveLeft')}
+          title={i18n.t('column.config.moveLeft')}
           onClick={() => move(props.columnIndex - 1)}
         >
-          <span class="inline-block h-4 w-4">
+          <span class="inline-block size-4">
             <ChevronLeft />
           </span>
         </button>
         <button
           class="py-4 pr-2"
-          title={i18n()('column.config.moveRight')}
+          title={i18n.t('column.config.moveRight')}
           onClick={() => move(props.columnIndex + 1)}
         >
-          <span class="inline-block h-4 w-4">
+          <span class="inline-block size-4">
             <ChevronRight />
           </span>
         </button>
         <div class="flex-1" />
         <button
           class="px-2 py-4 text-danger hover:text-rose-600"
-          title={i18n()('column.config.removeColumn')}
+          title={i18n.t('column.config.removeColumn')}
           onClick={() => removeColumn(props.column.id)}
         >
-          <span class="inline-block h-4 w-4" aria-label={i18n()('column.config.removeColumn')}>
+          <span class="inline-block size-4" aria-label={i18n.t('column.config.removeColumn')}>
             <Trash />
           </span>
         </button>
diff --git a/src/components/column/FollowingColumn.tsx b/src/components/column/FollowingColumn.tsx
index 087f296..797deb1 100644
--- a/src/components/column/FollowingColumn.tsx
+++ b/src/components/column/FollowingColumn.tsx
@@ -70,7 +70,7 @@ const FollowingColumn: Component<FollowingColumnDisplayProps> = (props) => {
     <Column
       header={
         <BasicColumnHeader
-          name={props.column.name ?? i18n()('column.home')}
+          name={props.column.name ?? i18n.t('column.home')}
           icon={<Home />}
           settings={() => <ColumnSettings column={props.column} columnIndex={props.columnIndex} />}
           onClose={() => removeColumn(props.column.id)}
diff --git a/src/components/column/LoadMore.tsx b/src/components/column/LoadMore.tsx
index 7453abc..91a2e7e 100644
--- a/src/components/column/LoadMore.tsx
+++ b/src/components/column/LoadMore.tsx
@@ -91,7 +91,7 @@ const LoadMore: Component<LoadMoreProps> = (props) => {
             class="flex h-12 w-full flex-col items-center justify-center hover:text-fg-secondary"
             onClick={() => props.loadMore.loadLatest()}
           >
-            <span>{i18n()('column.loadLatest')}</span>
+            <span>{i18n.t('column.loadLatest')}</span>
           </button>
         </ColumnItem>
       </Show>
@@ -102,7 +102,7 @@ const LoadMore: Component<LoadMoreProps> = (props) => {
           disabled={!props.eose}
           onClick={() => props.loadMore.loadOld()}
         >
-          <span>{i18n()('column.loadOld')}</span>
+          <span>{i18n.t('column.loadOld')}</span>
         </button>
       </ColumnItem>
     </>
diff --git a/src/components/column/NotificationColumn.tsx b/src/components/column/NotificationColumn.tsx
index d4181c8..3d585c6 100644
--- a/src/components/column/NotificationColumn.tsx
+++ b/src/components/column/NotificationColumn.tsx
@@ -49,7 +49,7 @@ const NotificationColumn: Component<NotificationColumnDisplayProps> = (props) =>
     <Column
       header={
         <BasicColumnHeader
-          name={props.column.name ?? i18n()('column.notification')}
+          name={props.column.name ?? i18n.t('column.notification')}
           icon={<Bell />}
           settings={() => <ColumnSettings column={props.column} columnIndex={props.columnIndex} />}
           onClose={() => removeColumn(props.column.id)}
diff --git a/src/components/column/PostsColumn.tsx b/src/components/column/PostsColumn.tsx
index c615776..b18d018 100644
--- a/src/components/column/PostsColumn.tsx
+++ b/src/components/column/PostsColumn.tsx
@@ -49,7 +49,7 @@ const PostsColumn: Component<PostsColumnDisplayProps> = (props) => {
     <Column
       header={
         <BasicColumnHeader
-          name={props.column.name ?? i18n()('column.posts')}
+          name={props.column.name ?? i18n.t('column.posts')}
           icon={<User />}
           settings={() => <ColumnSettings column={props.column} columnIndex={props.columnIndex} />}
           onClose={() => removeColumn(props.column.id)}
diff --git a/src/components/column/ReactionsColumn.tsx b/src/components/column/ReactionsColumn.tsx
index 600f753..a0454e5 100644
--- a/src/components/column/ReactionsColumn.tsx
+++ b/src/components/column/ReactionsColumn.tsx
@@ -49,7 +49,7 @@ const ReactionsColumn: Component<ReactionsColumnDisplayProps> = (props) => {
     <Column
       header={
         <BasicColumnHeader
-          name={props.column.name ?? i18n()('column.reactions')}
+          name={props.column.name ?? i18n.t('column.reactions')}
           icon={<Heart />}
           settings={() => <ColumnSettings column={props.column} columnIndex={props.columnIndex} />}
           onClose={() => removeColumn(props.column.id)}
diff --git a/src/components/column/RelaysColumn.tsx b/src/components/column/RelaysColumn.tsx
index af84d4b..365a1e3 100644
--- a/src/components/column/RelaysColumn.tsx
+++ b/src/components/column/RelaysColumn.tsx
@@ -50,7 +50,7 @@ const RelaysColumn: Component<RelaysColumnDisplayProps> = (props) => {
     <Column
       header={
         <BasicColumnHeader
-          name={props.column.name ?? i18n()('column.relay')}
+          name={props.column.name ?? i18n.t('column.relay')}
           icon={<GlobeAlt />}
           settings={() => <ColumnSettings column={props.column} columnIndex={props.columnIndex} />}
           onClose={() => removeColumn(props.column.id)}
diff --git a/src/components/event/EventDisplay.tsx b/src/components/event/EventDisplay.tsx
index f332fc9..79921b5 100644
--- a/src/components/event/EventDisplay.tsx
+++ b/src/components/event/EventDisplay.tsx
@@ -30,14 +30,14 @@ const EventDisplay: Component<EventDisplayProps> = (props) => {
     <Switch
       fallback={
         <div>
-          <span>{i18n()('post.unsupportedKind', { kind: props.event.kind })}</span>
+          <span>{i18n.t('post.unsupportedKind', { kind: props.event.kind })}</span>
           <EventLink eventId={props.event.id} kind={props.event.kind} />
         </div>
       }
     >
       <Match when={!isAllowedKind()} keyed>
         <div>
-          <span>{i18n()('post.unexpectedKind', { kind: props.event.kind })}</span>
+          <span>{i18n.t('post.unexpectedKind', { kind: props.event.kind })}</span>
           <EventLink eventId={props.event.id} kind={props.event.kind} />
         </div>
       </Match>
diff --git a/src/components/event/EventDisplayById.tsx b/src/components/event/EventDisplayById.tsx
index ca7e071..6aa9108 100644
--- a/src/components/event/EventDisplayById.tsx
+++ b/src/components/event/EventDisplayById.tsx
@@ -33,7 +33,7 @@ const EventDisplayById: Component<EventDisplayByIdProps> = (props) => {
     <Switch
       fallback={
         <span>
-          {i18n()('post.failedToFetchEvent')}
+          {i18n.t('post.failedToFetchEvent')}
           {props.eventId}
         </span>
       }
@@ -45,7 +45,7 @@ const EventDisplayById: Component<EventDisplayByIdProps> = (props) => {
       <Match when={eventQuery.isLoading && localProps.eventId} keyed>
         {(id) => (
           <div class="truncate">
-            {i18n()('general.loading')} <EventLink eventId={id} />
+            {i18n.t('general.loading')} <EventLink eventId={id} />
           </div>
         )}
       </Match>
diff --git a/src/components/event/Reaction.tsx b/src/components/event/Reaction.tsx
index 6d1172c..1258430 100644
--- a/src/components/event/Reaction.tsx
+++ b/src/components/event/Reaction.tsx
@@ -47,14 +47,14 @@ const ReactionDisplay: Component<ReactionDisplayProps> = (props) => {
           <EmojiDisplay reactionTypes={event().toReactionTypes()} />
         </div>
         <div class="notification-user flex flex-1 gap-1 overflow-hidden">
-          <div class="author-icon h-5 w-5 shrink-0 overflow-hidden rounded">
+          <div class="author-icon size-5 shrink-0 overflow-hidden rounded">
             <Show when={profile()?.picture} keyed>
               {(url) => (
                 <img
                   src={thumbnailUrl(url, 'icon')}
                   alt="icon"
                   // TODO autofit
-                  class="h-full w-full object-cover"
+                  class="size-full object-cover"
                 />
               )}
             </Show>
@@ -66,7 +66,7 @@ const ReactionDisplay: Component<ReactionDisplayProps> = (props) => {
             >
               <UserDisplayName pubkey={props.event.pubkey} />
             </button>
-            <span class="shrink-0">{i18n()('notification.reacted')}</span>
+            <span class="shrink-0">{i18n.t('notification.reacted')}</span>
           </div>
         </div>
         <div class="text-xs">{formatDate(event().createdAtAsDate())}</div>
@@ -76,7 +76,7 @@ const ReactionDisplay: Component<ReactionDisplayProps> = (props) => {
           when={reactedEvent()}
           fallback={
             <div class="truncate">
-              {i18n()('general.loading')} {eventId()}
+              {i18n.t('general.loading')} {eventId()}
             </div>
           }
           keyed
diff --git a/src/components/event/Repost.tsx b/src/components/event/Repost.tsx
index 04cb9f4..77c52eb 100644
--- a/src/components/event/Repost.tsx
+++ b/src/components/event/Repost.tsx
@@ -27,7 +27,7 @@ const Repost: Component<RepostProps> = (props) => {
     <div>
       <div class="flex items-center gap-1">
         <div class="flex shrink-0 place-items-center pl-[2px]" aria-hidden="true">
-          <span class="h-4 w-4 text-r-repost">
+          <span class="size-4 text-r-repost">
             <ArrowPathRoundedSquare />
           </span>
         </div>
@@ -38,7 +38,7 @@ const Repost: Component<RepostProps> = (props) => {
           >
             <UserDisplayName pubkey={props.event.pubkey} />
           </button>
-          <span class="shrink-0">{i18n()('notification.reposted')}</span>
+          <span class="shrink-0">{i18n.t('notification.reposted')}</span>
         </div>
         <div class="text-xs">{formatDate(event().createdAtAsDate())}</div>
       </div>
diff --git a/src/components/event/TextNote.tsx b/src/components/event/TextNote.tsx
index 52da2ec..1a99139 100644
--- a/src/components/event/TextNote.tsx
+++ b/src/components/event/TextNote.tsx
@@ -83,7 +83,7 @@ const TextNote: Component<TextNoteProps> = (props) => {
             </Show>
             <Show when={event().taggedPubkeys().length > 0}>
               <div class="text-xs">
-                {i18n()('post.replyToPre')}
+                {i18n.t('post.replyToPre')}
                 <For each={event().taggedPubkeys()}>
                   {(replyToPubkey: string) => (
                     <button
@@ -97,7 +97,7 @@ const TextNote: Component<TextNoteProps> = (props) => {
                     </button>
                   )}
                 </For>
-                {i18n()('post.replyToPost')}
+                {i18n.t('post.replyToPost')}
               </div>
             </Show>
             <ContentWarningDisplay contentWarning={event().contentWarning()}>
diff --git a/src/components/event/ZapReceipt.tsx b/src/components/event/ZapReceipt.tsx
index 1b62d46..523794d 100644
--- a/src/components/event/ZapReceipt.tsx
+++ b/src/components/event/ZapReceipt.tsx
@@ -74,20 +74,20 @@ const ZapReceiptDisplay: Component<ZapReceiptProps> = (props) => {
     <Show when={!shouldMuteEvent(props.event) && isZapReceiptVerified()}>
       <div class="flex items-center gap-1 text-sm">
         <div class="flex w-6 flex-col items-center">
-          <div class="h-4 w-4 shrink-0 text-amber-500" aria-hidden="true">
+          <div class="size-4 shrink-0 text-amber-500" aria-hidden="true">
             <Bolt />
           </div>
           <div class="mt-[-2px] shrink-0 text-xs">{amountSi()}</div>
         </div>
         <div class="notification-user flex gap-1 overflow-hidden">
-          <div class="author-icon h-5 w-5 shrink-0 overflow-hidden rounded">
+          <div class="author-icon size-5 shrink-0 overflow-hidden rounded">
             <Show when={senderProfile()?.picture} keyed>
               {(url) => (
                 <img
                   src={thumbnailUrl(url, 'icon')}
                   alt="icon"
                   // TODO autofit
-                  class="h-full w-full object-cover"
+                  class="size-full object-cover"
                 />
               )}
             </Show>
@@ -99,7 +99,7 @@ const ZapReceiptDisplay: Component<ZapReceiptProps> = (props) => {
             >
               <UserDisplayName pubkey={event().senderPubkey()} />
             </button>
-            <span class="shrink-0">{i18n()('notification.zapped')}</span>
+            <span class="shrink-0">{i18n.t('notification.zapped')}</span>
           </div>
         </div>
       </div>
diff --git a/src/components/event/textNote/ContentWarningDisplay.tsx b/src/components/event/textNote/ContentWarningDisplay.tsx
index 74a35b5..76b9acc 100644
--- a/src/components/event/textNote/ContentWarningDisplay.tsx
+++ b/src/components/event/textNote/ContentWarningDisplay.tsx
@@ -25,10 +25,10 @@ const ContentWarningDisplay: Component<ContentWarningDisplayProps> = (props) =>
           <span class="inline-block size-4">
             <ExclamationTriangle />
           </span>
-          <span>{i18n()('post.contentWarning.show')}</span>
+          <span>{i18n.t('post.contentWarning.show')}</span>
           <Show when={props.contentWarning.reason != null}>
             <span>
-              {i18n()('post.contentWarning.reason')}: {props.contentWarning.reason}
+              {i18n.t('post.contentWarning.reason')}: {props.contentWarning.reason}
             </span>
           </Show>
         </button>
@@ -40,7 +40,7 @@ const ContentWarningDisplay: Component<ContentWarningDisplayProps> = (props) =>
           class="text-xs text-fg-secondary hover:text-fg-secondary/70"
           onClick={() => setShowContentWarning(false)}
         >
-          {i18n()('post.contentWarning.hide')}
+          {i18n.t('post.contentWarning.hide')}
         </button>
       </Show>
     </Show>
diff --git a/src/components/event/textNote/ImageDisplay.tsx b/src/components/event/textNote/ImageDisplay.tsx
index 1aa0b32..d28ffdb 100644
--- a/src/components/event/textNote/ImageDisplay.tsx
+++ b/src/components/event/textNote/ImageDisplay.tsx
@@ -23,7 +23,7 @@ const ImageDisplay: Component<ImageDisplayProps> = (props) => {
           class="rounded bg-bg-tertiary p-3 text-xs text-fg-secondary hover:shadow"
           onClick={() => setHidden(false)}
         >
-          {i18n()('post.showImage')}
+          {i18n.t('post.showImage')}
         </button>
       }
     >
diff --git a/src/components/event/textNote/PreviewedLink.tsx b/src/components/event/textNote/PreviewedLink.tsx
index afda22b..5b2040e 100644
--- a/src/components/event/textNote/PreviewedLink.tsx
+++ b/src/components/event/textNote/PreviewedLink.tsx
@@ -109,7 +109,7 @@ const ClickToShow: Component<ClickToShowProps> = (props) => {
             class="flex flex-col items-center rounded bg-bg-tertiary p-3 text-xs text-fg-secondary hover:shadow"
             onClick={() => setHidden(false)}
           >
-            {i18n()('post.showPreview')}
+            {i18n.t('post.showPreview')}
           </button>
           <SafeLink class="text-link underline" href={props.url} />
         </div>
diff --git a/src/components/event/textNote/VideoDisplay.tsx b/src/components/event/textNote/VideoDisplay.tsx
index 2b6ef3e..e1e0bc4 100644
--- a/src/components/event/textNote/VideoDisplay.tsx
+++ b/src/components/event/textNote/VideoDisplay.tsx
@@ -22,7 +22,7 @@ const VideoDisplay: Component<VideoDisplayProps> = (props) => {
           class="rounded bg-bg-tertiary p-3 text-xs text-fg-secondary hover:shadow"
           onClick={() => setHidden(false)}
         >
-          {i18n()('post.showVideo')}
+          {i18n.t('post.showVideo')}
         </button>
       }
     >
@@ -36,7 +36,7 @@ const VideoDisplay: Component<VideoDisplayProps> = (props) => {
               src={props.url}
               controls
             >
-              <a href={props.url}>{i18n()('post.download')}</a>
+              <a href={props.url}>{i18n.t('post.download')}</a>
             </video>
           </SafeLink>
         )}
diff --git a/src/components/modal/About.tsx b/src/components/modal/About.tsx
index dc8dcbb..77d74f6 100644
--- a/src/components/modal/About.tsx
+++ b/src/components/modal/About.tsx
@@ -61,17 +61,17 @@ const About: Component<AboutProps> = (props) => {
             class="rounded border-2 border-primary px-4 py-2 font-bold text-primary hover:border-primary-hover hover:text-primary-hover"
             href="https://github.com/syusui-s/rabbit/issues/new/choose"
           >
-            {i18n()('about.bugReport')}
+            {i18n.t('about.bugReport')}
           </SafeLink>
           <SafeLink
             class="rounded border-2 border-primary px-4 py-2 font-bold text-primary hover:border-primary-hover hover:text-primary-hover"
             href="https://github.com/syusui-s/rabbit"
           >
-            {i18n()('about.sourceCode')}
+            {i18n.t('about.sourceCode')}
           </SafeLink>
         </div>
 
-        <h2 class="my-4 text-xl font-bold">{i18n()('about.termOfService')}</h2>
+        <h2 class="my-4 text-xl font-bold">{i18n.t('about.termOfService')}</h2>
 
         <p class="my-4">
           Copyright (C) 2023 Shusui Moyatani and{' '}
@@ -84,12 +84,12 @@ const About: Component<AboutProps> = (props) => {
         </p>
 
         <pre class=" max-h-96 overflow-auto rounded bg-bg-tertiary p-2 text-sm">
-          {i18n()('about.agplText')}
+          {i18n.t('about.agplText')}
         </pre>
 
         <p>
           <SafeLink class="text-link underline" href="https://gpl.mhatta.org/agpl.ja.html">
-            {i18n()('about.agplTranslationJa')}
+            {i18n.t('about.agplTranslationJa')}
           </SafeLink>
         </p>
 
@@ -97,7 +97,7 @@ const About: Component<AboutProps> = (props) => {
           {packageInfo()?.self.licenseText}
         </pre>
 
-        <h2 class="my-4 text-xl font-bold">{i18n()('about.usingLibraries')}</h2>
+        <h2 class="my-4 text-xl font-bold">{i18n.t('about.usingLibraries')}</h2>
 
         <For each={packageInfo()?.packages ?? []}>
           {(p) => (
diff --git a/src/components/modal/AddColumn.tsx b/src/components/modal/AddColumn.tsx
index e016275..9e6f684 100644
--- a/src/components/modal/AddColumn.tsx
+++ b/src/components/modal/AddColumn.tsx
@@ -84,28 +84,28 @@ const AddColumn: Component<AddColumnProps> = (props) => {
           class="flex basis-1/2 flex-col items-center gap-2 py-8 hover:text-primary sm:basis-1/4"
           onClick={() => addFollowingColumn()}
         >
-          <span class="inline-block h-8 w-8">
+          <span class="inline-block size-8">
             <Home />
           </span>
-          {i18n()('column.home')}
+          {i18n.t('column.home')}
         </button>
         <button
           class="flex basis-1/2 flex-col items-center gap-2 py-8 hover:text-primary sm:basis-1/4"
           onClick={() => addNotificationColumn()}
         >
-          <span class="inline-block h-8 w-8">
+          <span class="inline-block size-8">
             <Bell />
           </span>
-          {i18n()('column.notification')}
+          {i18n.t('column.notification')}
         </button>
         <button
           class="flex basis-1/2 flex-col items-center gap-2 py-8 hover:text-primary sm:basis-1/4"
           onClick={() => addJapanRelaysColumn()}
         >
-          <span class="inline-block h-8 w-8">
+          <span class="inline-block size-8">
             <GlobeAlt />
           </span>
-          {i18n()('column.japanese')}
+          {i18n.t('column.japanese')}
         </button>
         {/*
         <button
@@ -133,28 +133,28 @@ const AddColumn: Component<AddColumnProps> = (props) => {
           class="flex basis-1/2 flex-col items-center gap-2 py-8 hover:text-primary sm:basis-1/4"
           onClick={() => addSearchColumn()}
         >
-          <span class="inline-block h-8 w-8">
+          <span class="inline-block size-8">
             <MagnifyingGlass />
           </span>
-          {i18n()('column.search')}
+          {i18n.t('column.search')}
         </button>
         <button
           class="flex basis-1/2 flex-col items-center gap-2 py-8 hover:text-primary sm:basis-1/4"
           onClick={() => addMyPostsColumn()}
         >
-          <span class="inline-block h-8 w-8">
+          <span class="inline-block size-8">
             <User />
           </span>
-          {i18n()('column.myPosts')}
+          {i18n.t('column.myPosts')}
         </button>
         <button
           class="flex basis-1/2 flex-col items-center gap-2 py-8 hover:text-primary sm:basis-1/4"
           onClick={() => addMyReactionsColumn()}
         >
-          <span class="inline-block h-8 w-8">
+          <span class="inline-block size-8">
             <Heart />
           </span>
-          {i18n()('column.myReactions')}
+          {i18n.t('column.myReactions')}
         </button>
       </div>
     </BasicModal>
diff --git a/src/components/modal/Config.tsx b/src/components/modal/Config.tsx
index 47ca628..afea40e 100644
--- a/src/components/modal/Config.tsx
+++ b/src/components/modal/Config.tsx
@@ -44,7 +44,7 @@ const Section = (props: { title: string; initialOpened?: boolean; children: JSX.
           onClick={() => toggleOpened()}
         >
           <span class="flex-1 hover:text-fg-secondary">{props.title}</span>
-          <span class="inline-block h-4 w-4 shrink-0 text-fg">
+          <span class="inline-block size-4 shrink-0 text-fg">
             <Show when={opened()} fallback={<ChevronDown />}>
               <ChevronUp />
             </Show>
@@ -73,7 +73,7 @@ const ToggleButton = (props: {
     area-label={props.value}
     onClick={(event) => props.onClick(event)}
   >
-    <span class="m-[-3px] inline-block h-5 w-5 rounded-full border bg-primary-fg shadow" />
+    <span class="m-[-3px] inline-block size-5 rounded-full border bg-primary-fg shadow" />
   </button>
 );
 
@@ -83,7 +83,7 @@ const ProfileSection = () => {
   const { showProfile, showProfileEdit } = useModalState();
 
   return (
-    <Section title={i18n()('config.profile.profile')}>
+    <Section title={i18n.t('config.profile.profile')}>
       <div class="flex gap-2 py-1">
         <button
           class="rounded border border-primary px-4 py-1 font-bold text-primary"
@@ -93,13 +93,13 @@ const ProfileSection = () => {
             })
           }
         >
-          {i18n()('config.profile.openProfile')}
+          {i18n.t('config.profile.openProfile')}
         </button>
         <button
           class="rounded border border-primary px-4 py-1 font-bold text-primary"
           onClick={() => showProfileEdit()}
         >
-          {i18n()('config.profile.editProfile')}
+          {i18n.t('config.profile.editProfile')}
         </button>
       </div>
     </Section>
@@ -126,11 +126,11 @@ const RelayConfig = () => {
     const relayUrls = importedRelays.map(([relayUrl]) => relayUrl).join('\n');
 
     if (importedRelays.length === 0) {
-      window.alert(i18n()('config.relays.notConfigured'));
+      window.alert(i18n.t('config.relays.notConfigured'));
       return;
     }
 
-    if (!window.confirm(`${i18n()('config.relays.askImport')}\n\n${relayUrls}`)) {
+    if (!window.confirm(`${i18n.t('config.relays.askImport')}\n\n${relayUrls}`)) {
       return;
     }
 
@@ -142,14 +142,14 @@ const RelayConfig = () => {
     });
     const currentCount = config().relayUrls.length;
     const importedCount = currentCount - lastCount;
-    window.alert(i18n()('config.relays.imported', { count: importedCount }));
+    window.alert(i18n.t('config.relays.imported', { count: importedCount }));
   };
 
   return (
     <>
-      <Section title={i18n()('config.relays.relays')}>
+      <Section title={i18n.t('config.relays.relays')}>
         <p class="py-1">
-          {i18n()('config.relays.numOfRelays', { count: config().relayUrls.length })}
+          {i18n.t('config.relays.numOfRelays', { count: config().relayUrls.length })}
         </p>
         <form class="flex gap-2" onSubmit={handleClickAddRelay}>
           <input
@@ -162,7 +162,7 @@ const RelayConfig = () => {
             onChange={(ev) => setRelayUrlInput(ev.currentTarget.value)}
           />
           <button type="submit" class="rounded bg-primary p-2 font-bold text-primary-fg">
-            {i18n()('config.relays.addRelay')}
+            {i18n.t('config.relays.addRelay')}
           </button>
         </form>
         <ul class="pt-2">
@@ -170,7 +170,7 @@ const RelayConfig = () => {
             {(relayUrl: string) => (
               <li class="flex items-center border-t border-border pr-4">
                 <div class="flex-1 truncate">{relayUrl}</div>
-                <button class="h-3 w-3 shrink-0" onClick={() => removeRelay(relayUrl)}>
+                <button class="size-3 shrink-0" onClick={() => removeRelay(relayUrl)}>
                   <XMark />
                 </button>
               </li>
@@ -178,18 +178,18 @@ const RelayConfig = () => {
           </For>
         </ul>
       </Section>
-      <Section title={i18n()('config.relays.importRelays')}>
+      <Section title={i18n.t('config.relays.importRelays')}>
         <button
           type="button"
           class="rounded bg-primary p-2 font-bold text-primary-fg"
           onClick={() => {
             importFromNIP07().catch((err) => {
               console.error('failed to import relays', err);
-              window.alert(i18n()('config.relays.failedToImport'));
+              window.alert(i18n.t('config.relays.failedToImport'));
             });
           }}
         >
-          {i18n()('config.relays.importFromExtension')}
+          {i18n.t('config.relays.importFromExtension')}
         </button>
       </Section>
     </>
@@ -213,7 +213,7 @@ const ColorThemeConfig = () => {
   };
 
   return (
-    <Section title={i18n()('config.display.colorTheme')}>
+    <Section title={i18n.t('config.display.colorTheme')}>
       <div class="scrollbar flex flex-col overflow-y-auto rounded-md border border-border">
         <For each={Object.values(colorThemes)}>
           {(colorTheme) => (
@@ -247,18 +247,18 @@ const DateFormatConfig = () => {
   }[] = [
     {
       id: 'relative',
-      name: i18n()('config.display.relativeTimeNotation'),
-      example: i18n()('config.display.relativeTimeNotationExample'),
+      name: i18n.t('config.display.relativeTimeNotation'),
+      example: i18n.t('config.display.relativeTimeNotationExample'),
     },
     {
       id: 'absolute-short',
-      name: i18n()('config.display.absoluteTimeNotationShort'),
-      example: i18n()('config.display.absoluteTimeNotationShortExample'),
+      name: i18n.t('config.display.absoluteTimeNotationShort'),
+      example: i18n.t('config.display.absoluteTimeNotationShortExample'),
     },
     {
       id: 'absolute-long',
-      name: i18n()('config.display.absoluteTimeNotationLong'),
-      example: i18n()('config.display.absoluteTimeNotationLongExample'),
+      name: i18n.t('config.display.absoluteTimeNotationLong'),
+      example: i18n.t('config.display.absoluteTimeNotationLongExample'),
     },
   ];
 
@@ -267,7 +267,7 @@ const DateFormatConfig = () => {
   };
 
   return (
-    <Section title={i18n()('config.display.timeNotation')}>
+    <Section title={i18n.t('config.display.timeNotation')}>
       <div class="flex flex-col justify-evenly gap-2 sm:flex-row">
         <For each={dateFormats}>
           {({ id, name, example }) => (
@@ -313,17 +313,17 @@ const ReactionConfig = () => {
   };
 
   return (
-    <Section title={i18n()('config.display.reaction')}>
+    <Section title={i18n.t('config.display.reaction')}>
       <div class="flex flex-col justify-evenly gap-2">
         <div class="flex w-full">
-          <div class="flex-1">{i18n()('config.display.enableEmojiReaction')}</div>
+          <div class="flex-1">{i18n.t('config.display.enableEmojiReaction')}</div>
           <ToggleButton
             value={config().useEmojiReaction}
             onClick={() => toggleUseEmojiReaction()}
           />
         </div>
         <div class="flex w-full">
-          <div class="flex-1">{i18n()('config.display.showEmojiReaction')}</div>
+          <div class="flex-1">{i18n.t('config.display.showEmojiReaction')}</div>
           <ToggleButton
             value={config().showEmojiReaction}
             onClick={() => toggleShowEmojiReaction()}
@@ -350,10 +350,10 @@ const EmojiConfig = () => {
   };
 
   return (
-    <Section title={i18n()('config.customEmoji.customEmoji')}>
+    <Section title={i18n.t('config.customEmoji.customEmoji')}>
       <form class="flex flex-col gap-2" onSubmit={handleClickSaveEmoji}>
         <label class="flex flex-1 items-center gap-1">
-          <div class="w-9">{i18n()('config.customEmoji.shortcode')}</div>
+          <div class="w-9">{i18n.t('config.customEmoji.shortcode')}</div>
           <input
             class="flex-1 rounded-md border-border bg-bg placeholder:text-fg-secondary focus:border-border focus:ring-primary"
             type="text"
@@ -366,7 +366,7 @@ const EmojiConfig = () => {
           />
         </label>
         <label class="flex flex-1 items-center gap-1">
-          <div class="w-9">{i18n()('config.customEmoji.url')}</div>
+          <div class="w-9">{i18n.t('config.customEmoji.url')}</div>
           <input
             class="flex-1 rounded-md border-border bg-bg placeholder:text-fg-secondary focus:border-border focus:ring-primary"
             type="text"
@@ -382,7 +382,7 @@ const EmojiConfig = () => {
           type="submit"
           class="w-24 self-end rounded bg-primary p-2 font-bold text-primary-fg"
         >
-          {i18n()('config.customEmoji.addEmoji')}
+          {i18n.t('config.customEmoji.addEmoji')}
         </button>
       </form>
       <ul class="mt-4 flex max-h-[40vh] min-h-64 flex-wrap overflow-y-auto border-t border-border">
@@ -401,7 +401,7 @@ const EmojiConfig = () => {
                       class="w-full px-2 py-1 text-danger"
                       onClick={() => removeEmoji(shortcode)}
                     >
-                      {i18n()('config.customEmoji.removeEmoji')}
+                      {i18n.t('config.customEmoji.removeEmoji')}
                     </button>
                   </div>
                 </div>
@@ -415,7 +415,7 @@ const EmojiConfig = () => {
                   class="flex w-full flex-col items-center gap-1 rounded p-2 hover:bg-bg-tertiary/20 hover:shadow"
                   onClick={() => popup.open()}
                 >
-                  <LazyLoad fallback={<div class="h-8 w-8" />}>
+                  <LazyLoad fallback={<div class="size-8" />}>
                     {() => (
                       <div class="flex h-8 max-w-8 items-center">
                         <img class="object-contain" src={url} alt={shortcode} />
@@ -456,8 +456,8 @@ const EmojiImport = () => {
   };
 
   return (
-    <Section title={i18n()('config.customEmoji.emojiImport')}>
-      <p>{i18n()('config.customEmoji.emojiImportDescription')}</p>
+    <Section title={i18n.t('config.customEmoji.emojiImport')}>
+      <p>{i18n.t('config.customEmoji.emojiImportDescription')}</p>
       <form class="flex flex-col gap-2" onSubmit={handleClickSaveEmoji}>
         <textarea
           class="flex-1 rounded-md border-border bg-bg placeholder:text-fg-secondary focus:border-border focus:ring-primary"
@@ -470,7 +470,7 @@ const EmojiImport = () => {
           type="submit"
           class="w-24 self-end rounded bg-primary p-2 font-bold text-primary-fg"
         >
-          {i18n()('config.customEmoji.importEmoji')}
+          {i18n.t('config.customEmoji.importEmoji')}
         </button>
       </form>
     </Section>
@@ -492,7 +492,7 @@ const MuteConfig = () => {
 
   return (
     <>
-      <Section title={i18n()('config.mute.mutedUsers')} initialOpened={false}>
+      <Section title={i18n.t('config.mute.mutedUsers')} initialOpened={false}>
         <ul class="flex max-h-[50vh] min-h-64 flex-col overflow-y-auto">
           <For each={config().mutedPubkeys}>
             {(pubkey) => (
@@ -500,7 +500,7 @@ const MuteConfig = () => {
                 <div class="flex-1 truncate">
                   <LazyLoad>{() => <UserNameDisplay pubkey={pubkey} />}</LazyLoad>
                 </div>
-                <button class="h-3 w-3 shrink-0" onClick={() => removeMutedPubkey(pubkey)}>
+                <button class="size-3 shrink-0" onClick={() => removeMutedPubkey(pubkey)}>
                   <XMark />
                 </button>
               </li>
@@ -508,7 +508,7 @@ const MuteConfig = () => {
           </For>
         </ul>
       </Section>
-      <Section title={i18n()('config.mute.mutedKeywords')} initialOpened={false}>
+      <Section title={i18n.t('config.mute.mutedKeywords')} initialOpened={false}>
         <form class="flex gap-2" onSubmit={handleClickAddKeyword}>
           <input
             class="flex-1 rounded-md border border-border bg-bg ring-border focus:border-border focus:ring-primary"
@@ -518,7 +518,7 @@ const MuteConfig = () => {
             onChange={(ev) => setKeywordInput(ev.currentTarget.value)}
           />
           <button type="submit" class="rounded bg-primary p-2 font-bold text-primary-fg">
-            {i18n()('config.mute.add')}
+            {i18n.t('config.mute.add')}
           </button>
         </form>
         <ul class="mt-2 flex max-h-[50vh] min-h-64 flex-col overflow-y-auto border-t border-border">
@@ -526,7 +526,7 @@ const MuteConfig = () => {
             {(keyword) => (
               <li class="flex items-center border-b border-border pr-4">
                 <div class="flex-1 truncate">{keyword}</div>
-                <button class="h-3 w-3 shrink-0" onClick={() => removeMutedKeyword(keyword)}>
+                <button class="size-3 shrink-0" onClick={() => removeMutedKeyword(keyword)}>
                   <XMark />
                 </button>
               </li>
@@ -553,8 +553,8 @@ const EmbeddingConfig = () => {
   };
 
   return (
-    <Section title={i18n()('config.display.embedding')}>
-      <p>{i18n()('config.display.embeddingDescription')}</p>
+    <Section title={i18n.t('config.display.embedding')}>
+      <p>{i18n.t('config.display.embeddingDescription')}</p>
       <div class="flex flex-col justify-evenly gap-2">
         <div class="flex w-full">
           <div class="flex-1">YouTube</div>
@@ -599,21 +599,21 @@ const OtherConfig = () => {
   };
 
   return (
-    <Section title={i18n()('config.display.others')}>
+    <Section title={i18n.t('config.display.others')}>
       <div class="flex flex-col justify-evenly gap-2">
         <div class="flex w-full">
-          <div class="flex-1">{i18n()('config.display.keepOpenPostForm')}</div>
+          <div class="flex-1">{i18n.t('config.display.keepOpenPostForm')}</div>
           <ToggleButton
             value={config().keepOpenPostForm}
             onClick={() => toggleKeepOpenPostForm()}
           />
         </div>
         <div class="flex w-full">
-          <div class="flex-1">{i18n()('config.display.showMediaByDefault')}</div>
+          <div class="flex-1">{i18n.t('config.display.showMediaByDefault')}</div>
           <ToggleButton value={config().showMedia} onClick={() => toggleShowMedia()} />
         </div>
         <div class="flex w-full">
-          <div class="flex-1">{i18n()('config.display.hideNumbers')}</div>
+          <div class="flex-1">{i18n.t('config.display.hideNumbers')}</div>
           <ToggleButton value={config().hideCount} onClick={() => toggleHideCount()} />
         </div>
         {/*
@@ -638,17 +638,17 @@ const ConfigUI = (props: ConfigProps) => {
 
   const menu = [
     {
-      name: () => i18n()('config.profile.profile'),
+      name: () => i18n.t('config.profile.profile'),
       icon: () => <User />,
       render: () => <ProfileSection />,
     },
     {
-      name: () => i18n()('config.relays.relays'),
+      name: () => i18n.t('config.relays.relays'),
       icon: () => <ServerStack />,
       render: () => <RelayConfig />,
     },
     {
-      name: () => i18n()('config.display.display'),
+      name: () => i18n.t('config.display.display'),
       icon: () => <PaintBrush />,
       render: () => (
         <>
@@ -661,7 +661,7 @@ const ConfigUI = (props: ConfigProps) => {
       ),
     },
     {
-      name: () => i18n()('config.customEmoji.customEmoji'),
+      name: () => i18n.t('config.customEmoji.customEmoji'),
       icon: () => <FaceSmile />,
       render: () => (
         <>
@@ -671,7 +671,7 @@ const ConfigUI = (props: ConfigProps) => {
       ),
     },
     {
-      name: () => i18n()('config.mute.mute'),
+      name: () => i18n.t('config.mute.mute'),
       icon: () => <EyeSlash />,
       render: () => <MuteConfig />,
     },
@@ -690,7 +690,7 @@ const ConfigUI = (props: ConfigProps) => {
           when={getMenuItem()}
           fallback={
             <>
-              <h2 class="flex-1 text-center text-lg font-bold">{i18n()('config.config')}</h2>
+              <h2 class="flex-1 text-center text-lg font-bold">{i18n.t('config.config')}</h2>
               <div class="flex gap-1">
                 <Show when={window.location.host === 'syusui-s.github.io'}>
                   <button
@@ -703,7 +703,7 @@ const ConfigUI = (props: ConfigProps) => {
                         .catch(() => window.alert('failed to copy'));
                     }}
                   >
-                    {i18n()('config.copyToClipboard')}
+                    {i18n.t('config.copyToClipboard')}
                   </button>
                 </Show>
                 <Show when={window.location.host === 'rabbit.syusui.net'}>
@@ -722,7 +722,7 @@ const ConfigUI = (props: ConfigProps) => {
                       }
                     }}
                   >
-                    {i18n()('config.importFromClipboard')}
+                    {i18n.t('config.importFromClipboard')}
                   </button>
                 </Show>
               </div>
@@ -734,7 +734,7 @@ const ConfigUI = (props: ConfigProps) => {
                         class="flex w-full gap-2 py-3 hover:text-primary"
                         onClick={() => setMenuIndex(i)}
                       >
-                        <span class="inline-block h-6 w-6">{menuItem.icon()}</span>
+                        <span class="inline-block size-6">{menuItem.icon()}</span>
                         {menuItem.name()}
                       </button>
                     </li>
@@ -752,7 +752,7 @@ const ConfigUI = (props: ConfigProps) => {
                   class="pr-4 text-fg hover:text-fg-secondary"
                   onClick={() => setMenuIndex(null)}
                 >
-                  <span class="inline-block h-6 w-6">
+                  <span class="inline-block size-6">
                     <ArrowLeft />
                   </span>
                 </button>
diff --git a/src/components/modal/ProfileDisplay.tsx b/src/components/modal/ProfileDisplay.tsx
index bed558a..4e07401 100644
--- a/src/components/modal/ProfileDisplay.tsx
+++ b/src/components/modal/ProfileDisplay.tsx
@@ -151,12 +151,12 @@ const ProfileDisplay: Component<ProfileDisplayProps> = (props) => {
 
       if (
         (latest.data() == null || latest.followingPubkeys().length === 0) &&
-        !window.confirm(i18n()('profile.confirmUpdateEvenIfEmpty'))
+        !window.confirm(i18n.t('profile.confirmUpdateEvenIfEmpty'))
       )
         return;
 
       if ((latest?.data()?.created_at ?? 0) < (myFollowingQuery.data?.created_at ?? 0)) {
-        window.alert(i18n()('profile.failedToFetchLatestFollowList'));
+        window.alert(i18n.t('profile.failedToFetchLatestFollowList'));
         return;
       }
 
@@ -182,7 +182,7 @@ const ProfileDisplay: Component<ProfileDisplayProps> = (props) => {
       });
     } catch (err) {
       console.error('failed to update contact list', err);
-      window.alert(i18n()('profile.failedToUpdateFollowList'));
+      window.alert(i18n.t('profile.failedToUpdateFollowList'));
     } finally {
       setUpdatingContacts(false);
     }
@@ -195,7 +195,7 @@ const ProfileDisplay: Component<ProfileDisplayProps> = (props) => {
   };
 
   const unfollow = () => {
-    if (!window.confirm(i18n()('profile.confirmUnfollow'))) return;
+    if (!window.confirm(i18n.t('profile.confirmUnfollow'))) return;
 
     updateContacts('unfollow', props.pubkey).catch((err) => {
       console.log('failed to unfollow', err);
@@ -213,13 +213,13 @@ const ProfileDisplay: Component<ProfileDisplayProps> = (props) => {
         },
        */
       {
-        content: i18n()('profile.copyPubkey'),
+        content: i18n.t('profile.copyPubkey'),
         onSelect: () => {
           navigator.clipboard.writeText(npub()).catch((err) => window.alert(err));
         },
       },
       {
-        content: i18n()('profile.addUserColumn'),
+        content: i18n.t('profile.addUserColumn'),
         onSelect: () => {
           const columnName = profile()?.name ?? npub();
           saveColumn(createPostsColumn({ name: columnName, pubkey: props.pubkey }));
@@ -228,16 +228,16 @@ const ProfileDisplay: Component<ProfileDisplayProps> = (props) => {
         },
       },
       {
-        content: i18n()('profile.addUserHomeColumn'),
+        content: i18n.t('profile.addUserHomeColumn'),
         onSelect: () => {
-          const columnName = `${i18n()('column.home')} / ${profile()?.name ?? npub()}`;
+          const columnName = `${i18n.t('column.home')} / ${profile()?.name ?? npub()}`;
           saveColumn(createFollowingColumn({ name: columnName, pubkey: props.pubkey }));
           request({ command: 'moveToLastColumn' }).catch((err) => console.error(err));
           props.onClose?.();
         },
       },
       {
-        content: !isMuted() ? i18n()('profile.mute') : i18n()('profile.unmute'),
+        content: !isMuted() ? i18n.t('profile.mute') : i18n.t('profile.unmute'),
         onSelect: () => {
           if (!isMuted()) {
             addMutedPubkey(props.pubkey);
@@ -248,7 +248,7 @@ const ProfileDisplay: Component<ProfileDisplayProps> = (props) => {
       },
       {
         when: () => props.pubkey === myPubkey(),
-        content: !following() ? i18n()('profile.followMyself') : i18n()('profile.unfollowMyself'),
+        content: !following() ? i18n.t('profile.followMyself') : i18n.t('profile.unfollowMyself'),
         onSelect: () => {
           if (!following()) {
             follow();
@@ -282,16 +282,16 @@ const ProfileDisplay: Component<ProfileDisplayProps> = (props) => {
       >
         {(bannerUrl) => (
           <div class="h-40 w-full shrink-0 sm:h-52">
-            <img src={bannerUrl} alt="header" class="h-full w-full object-cover" />
+            <img src={bannerUrl} alt="header" class="size-full object-cover" />
           </div>
         )}
       </Show>
       <div class="mt-[-54px] flex items-end gap-4 px-4 pt-4">
         <div class="flex-1 shrink-0">
-          <div class="h-28 w-28 overflow-hidden rounded-lg shadow-md">
+          <div class="size-28 overflow-hidden rounded-lg shadow-md">
             <Show when={profileQuery.isFetched && profile()?.picture} keyed>
               {(pictureUrl) => (
-                <img src={pictureUrl} alt="user icon" class="h-full w-full object-cover" />
+                <img src={pictureUrl} alt="user icon" class="size-full object-cover" />
               )}
             </Show>
           </div>
@@ -306,17 +306,17 @@ const ProfileDisplay: Component<ProfileDisplayProps> = (props) => {
                     text-center font-bold text-primary hover:bg-primary hover:text-primary-fg sm:w-20"
                     onClick={() => showProfileEdit()}
                   >
-                    {i18n()('profile.editProfile')}
+                    {i18n.t('profile.editProfile')}
                   </button>
                 </Match>
                 <Match when={updateContactsMutation.isPending || updatingContacts()}>
                   <span class="rounded-full border border-primary px-4 py-2 text-primary sm:text-base">
-                    {i18n()('general.updating')}
+                    {i18n.t('general.updating')}
                   </span>
                 </Match>
                 <Match when={myFollowingQuery.isPending || myFollowingQuery.isFetching}>
                   <span class="rounded-full border border-primary px-4 py-2 text-primary sm:text-base">
-                    {i18n()('general.loading')}
+                    {i18n.t('general.loading')}
                   </span>
                 </Match>
                 <Match when={following()}>
@@ -327,8 +327,8 @@ const ProfileDisplay: Component<ProfileDisplayProps> = (props) => {
                     onClick={() => unfollow()}
                     disabled={updateContactsMutation.isPending}
                   >
-                    <Show when={!hoverFollowButton()} fallback={i18n()('profile.unfollow')}>
-                      {i18n()('profile.followingCurrently')}
+                    <Show when={!hoverFollowButton()} fallback={i18n.t('profile.unfollow')}>
+                      {i18n.t('profile.followingCurrently')}
                     </Show>
                   </button>
                 </Match>
@@ -338,7 +338,7 @@ const ProfileDisplay: Component<ProfileDisplayProps> = (props) => {
                     onClick={() => follow()}
                     disabled={updateContactsMutation.isPending}
                   >
-                    {i18n()('profile.follow')}
+                    {i18n.t('profile.follow')}
                   </button>
                 </Match>
               </Switch>
@@ -354,10 +354,10 @@ const ProfileDisplay: Component<ProfileDisplayProps> = (props) => {
             </div>
             <Switch>
               <Match when={userFollowingQuery.isPending}>
-                <div class="shrink-0 text-xs">{i18n()('general.loading')}</div>
+                <div class="shrink-0 text-xs">{i18n.t('general.loading')}</div>
               </Match>
               <Match when={followed()}>
-                <div class="shrink-0 text-xs">{i18n()('profile.followsYou')}</div>
+                <div class="shrink-0 text-xs">{i18n.t('profile.followsYou')}</div>
               </Match>
             </Switch>
           </div>
@@ -365,7 +365,7 @@ const ProfileDisplay: Component<ProfileDisplayProps> = (props) => {
       </div>
       <div class="flex items-start px-4 pt-2">
         <div class="h-16 shrink overflow-hidden">
-          <Show when={profileQuery.isPending}>{i18n()('general.loading')}</Show>
+          <Show when={profileQuery.isPending}>{i18n.t('general.loading')}</Show>
           <Show when={(profile()?.display_name?.length ?? 0) > 0}>
             <div class="truncate text-xl font-bold">{profile()?.display_name}</div>
           </Show>
@@ -378,18 +378,18 @@ const ProfileDisplay: Component<ProfileDisplayProps> = (props) => {
                 {nip05Identifier()?.ident}
                 <Switch
                   fallback={
-                    <span class="inline-block h-4 w-4 text-danger">
+                    <span class="inline-block size-4 text-danger">
                       <ExclamationCircle />
                     </span>
                   }
                 >
                   <Match when={verificationQuery.isPending}>
-                    <span class="inline-block h-3 w-3">
+                    <span class="inline-block size-3">
                       <ArrowPath />
                     </span>
                   </Match>
                   <Match when={isVerified()}>
-                    <span class="inline-block h-4 w-4 text-link">
+                    <span class="inline-block size-4 text-link">
                       <CheckCircle />
                     </span>
                   </Match>
@@ -411,11 +411,11 @@ const ProfileDisplay: Component<ProfileDisplayProps> = (props) => {
       </Show>
       <div class="flex border-t border-border px-4 py-2">
         <button class="flex flex-1 flex-col items-start" onClick={() => setModal('Following')}>
-          <div class="text-sm">{i18n()('profile.following')}</div>
+          <div class="text-sm">{i18n.t('profile.following')}</div>
           <div class="text-xl">
             <Show
               when={userFollowingQuery.isFetched}
-              fallback={<span class="text-sm">{i18n()('general.loading')}</span>}
+              fallback={<span class="text-sm">{i18n.t('general.loading')}</span>}
             >
               {userFollowingPubkeys().length}
             </Show>
@@ -423,7 +423,7 @@ const ProfileDisplay: Component<ProfileDisplayProps> = (props) => {
         </button>
         <Show when={!config().hideCount}>
           <div class="flex flex-1 flex-col items-start">
-            <div class="text-sm">{i18n()('profile.followers')}</div>
+            <div class="text-sm">{i18n.t('profile.followers')}</div>
             <div class="text-xl">
               <Show
                 when={showFollowers()}
@@ -432,7 +432,7 @@ const ProfileDisplay: Component<ProfileDisplayProps> = (props) => {
                     class="text-sm hover:text-fg-secondary"
                     onClick={() => setShowFollowers(true)}
                   >
-                    {i18n()('profile.loadFollowers')}
+                    {i18n.t('profile.loadFollowers')}
                   </button>
                 }
                 keyed
@@ -448,7 +448,7 @@ const ProfileDisplay: Component<ProfileDisplayProps> = (props) => {
           <Show when={profile()?.website} keyed>
             {(website) => (
               <li class="flex items-center gap-1">
-                <span class="inline-block h-4 w-4" area-label="website" title="website">
+                <span class="inline-block size-4" area-label="website" title="website">
                   <GlobeAlt />
                 </span>
                 <SafeLink class="text-link underline" href={website} />
diff --git a/src/components/modal/ProfileEdit.tsx b/src/components/modal/ProfileEdit.tsx
index 9125e53..f9052db 100644
--- a/src/components/modal/ProfileEdit.tsx
+++ b/src/components/modal/ProfileEdit.tsx
@@ -58,11 +58,11 @@ const ProfileEdit: Component<ProfileEditProps> = (props) => {
       const succeeded = results.filter((res) => res.status === 'fulfilled').length;
       const failed = results.length - succeeded;
       if (succeeded === results.length) {
-        window.alert(i18n()('profile.edit.updateSucceeded'));
+        window.alert(i18n.t('profile.edit.updateSucceeded'));
       } else if (succeeded > 0) {
-        window.alert(i18n()('profile.edit.failedToUpdatePartially', { count: failed }));
+        window.alert(i18n.t('profile.edit.failedToUpdatePartially', { count: failed }));
       } else {
-        window.alert(i18n()('profile.edit.failedToUpdate'));
+        window.alert(i18n.t('profile.edit.failedToUpdate'));
       }
       invalidateProfile()
         .then(() => query.refetch())
@@ -149,23 +149,23 @@ const ProfileEdit: Component<ProfileEditProps> = (props) => {
       <div>
         <Show when={banner().length > 0} fallback={<div class="h-24 shrink-0" />} keyed>
           <div class="h-40 w-full shrink-0 sm:h-52">
-            <img src={banner()} alt="header" class="h-full w-full object-cover" />
+            <img src={banner()} alt="header" class="size-full object-cover" />
           </div>
         </Show>
-        <div class="ml-4 mt-[-64px] h-28 w-28 rounded-lg shadow-md">
+        <div class="ml-4 mt-[-64px] size-28 rounded-lg shadow-md">
           <Show when={picture().length > 0}>
-            <img src={picture()} alt="user icon" class="h-full w-full rounded-lg object-cover" />
+            <img src={picture()} alt="user icon" class="size-full rounded-lg object-cover" />
           </Show>
         </div>
       </div>
       <Show when={loading()}>
-        <div class="px-4 pt-4">{i18n()('general.loading')}</div>
+        <div class="px-4 pt-4">{i18n.t('general.loading')}</div>
       </Show>
       <div>
         <form class="flex flex-col gap-4 p-4" onSubmit={handleSubmit}>
           <div class="flex flex-col items-start gap-1">
             <label class="font-bold" for="picture">
-              {i18n()('profile.edit.icon')}
+              {i18n.t('profile.edit.icon')}
             </label>
             <input
               class="w-full rounded-md border-border bg-bg ring-border focus:border-border focus:ring-primary"
@@ -181,7 +181,7 @@ const ProfileEdit: Component<ProfileEditProps> = (props) => {
           </div>
           <div class="flex flex-col items-start gap-1">
             <label class="font-bold" for="picture">
-              {i18n()('profile.edit.banner')}
+              {i18n.t('profile.edit.banner')}
             </label>
             <input
               class="w-full rounded-md border-border bg-bg focus:border-border focus:ring-primary"
@@ -197,7 +197,7 @@ const ProfileEdit: Component<ProfileEditProps> = (props) => {
           </div>
           <div class="flex flex-col items-start gap-1">
             <label class="font-bold" for="name">
-              {i18n()('profile.edit.name')}
+              {i18n.t('profile.edit.name')}
             </label>
             <div class="flex w-full items-center gap-2">
               <span>@</span>
@@ -217,7 +217,7 @@ const ProfileEdit: Component<ProfileEditProps> = (props) => {
           </div>
           <div class="flex flex-col items-start gap-1">
             <label class="font-bold" for="name">
-              {i18n()('profile.edit.displayName')}
+              {i18n.t('profile.edit.displayName')}
             </label>
             <input
               class="w-full rounded-md border-border bg-bg ring-border focus:border-border focus:ring-primary"
@@ -232,7 +232,7 @@ const ProfileEdit: Component<ProfileEditProps> = (props) => {
           </div>
           <div class="flex flex-col items-start gap-1">
             <label class="font-bold" for="name">
-              {i18n()('profile.edit.about')}
+              {i18n.t('profile.edit.about')}
             </label>
             <textarea
               class="w-full rounded-md border-border bg-bg ring-border focus:border-border focus:ring-primary"
@@ -245,7 +245,7 @@ const ProfileEdit: Component<ProfileEditProps> = (props) => {
           </div>
           <div class="flex flex-col items-start gap-1">
             <label class="font-bold" for="name">
-              {i18n()('profile.edit.website')}
+              {i18n.t('profile.edit.website')}
             </label>
             <input
               class="w-full rounded-md border-border bg-bg ring-border focus:border-border focus:ring-primary"
@@ -260,7 +260,7 @@ const ProfileEdit: Component<ProfileEditProps> = (props) => {
           </div>
           <div class="flex flex-col items-start gap-1">
             <label class="font-bold" for="name">
-              {i18n()('profile.edit.nip05')}
+              {i18n.t('profile.edit.nip05')}
             </label>
             <input
               class="w-full rounded-md border-border bg-bg ring-border focus:border-border focus:ring-primary"
@@ -276,9 +276,9 @@ const ProfileEdit: Component<ProfileEditProps> = (props) => {
           </div>
           <div class="flex flex-col items-start gap-1">
             <label class="font-bold" for="name">
-              {i18n()('profile.edit.lightningAddress')}
+              {i18n.t('profile.edit.lightningAddress')}
             </label>
-            <span class="text-xs">{i18n()('profile.edit.lightningAddressDescription')}</span>
+            <span class="text-xs">{i18n.t('profile.edit.lightningAddressDescription')}</span>
             <input
               class="w-full rounded-md border-border bg-bg ring-border focus:border-border focus:ring-primary"
               type="text"
@@ -293,7 +293,7 @@ const ProfileEdit: Component<ProfileEditProps> = (props) => {
           </div>
           <Show when={Object.entries(otherProperties()).length > 0}>
             <div>
-              <span class="font-bold">{i18n()('profile.edit.otherProperties')}</span>
+              <span class="font-bold">{i18n.t('profile.edit.otherProperties')}</span>
               <div>
                 <For each={Object.entries(otherProperties())}>
                   {([key, value]) => (
@@ -316,17 +316,17 @@ const ProfileEdit: Component<ProfileEditProps> = (props) => {
               }}
               disabled={mutation.isPending}
             >
-              {i18n()('profile.edit.save')}
+              {i18n.t('profile.edit.save')}
             </button>
             <button
               type="button"
               class="rounded border border-primary p-2 font-bold text-primary hover:border-primary-hover hover:text-primary-hover"
               onClick={() => props.onClose()}
             >
-              {i18n()('profile.edit.cancel')}
+              {i18n.t('profile.edit.cancel')}
             </button>
           </div>
-          <Show when={mutation.isPending}>{i18n()('profile.edit.updating')}</Show>
+          <Show when={mutation.isPending}>{i18n.t('profile.edit.updating')}</Show>
         </form>
       </div>
     </BasicModal>
diff --git a/src/components/modal/ZapRequestModal.tsx b/src/components/modal/ZapRequestModal.tsx
index ca4634b..35c8b42 100644
--- a/src/components/modal/ZapRequestModal.tsx
+++ b/src/components/modal/ZapRequestModal.tsx
@@ -143,10 +143,10 @@ const InvoiceDisplay: Component<{ invoice: string; event: NostrEvent; nostrPubke
       when={!zapped()}
       fallback={
         <div class="flex flex-col items-center gap-4 py-8">
-          <span class="inline-block h-28 w-28 rounded-full border-4 border-primary p-4 text-primary">
+          <span class="inline-block size-28 rounded-full border-4 border-primary p-4 text-primary">
             <Check />
           </span>
-          <div class="text-secondary text-xl">{i18n()('zap.completed')}</div>
+          <div class="text-secondary text-xl">{i18n.t('zap.completed')}</div>
         </div>
       }
     >
@@ -158,7 +158,7 @@ const InvoiceDisplay: Component<{ invoice: string; event: NostrEvent; nostrPubke
           class="inline-block rounded bg-primary p-4 font-bold text-primary-fg hover:bg-primary-hover"
           href={lightingInvoice()}
         >
-          {i18n()('zap.sendViaWallet')}
+          {i18n.t('zap.sendViaWallet')}
         </a>
         <Show when={webln.status() === 'available'}>
           <button
@@ -166,7 +166,7 @@ const InvoiceDisplay: Component<{ invoice: string; event: NostrEvent; nostrPubke
             class="inline-block rounded bg-primary p-4 font-bold text-primary-fg hover:bg-primary-hover"
             onClick={handleClickWebLN}
           >
-            {i18n()('zap.sendViaWebLN')}
+            {i18n.t('zap.sendViaWebLN')}
           </button>
         </Show>
       </div>
@@ -274,19 +274,19 @@ const ZapDialog: Component<ZapDialogProps> = (props) => {
   return (
     <Switch>
       <Match when={query.isError}>
-        {i18n()('zap.fetchingLnUrlEndpointError')}: {query?.error?.message}
+        {i18n.t('zap.fetchingLnUrlEndpointError')}: {query?.error?.message}
       </Match>
       <Match when={error()} keyed>
         {(err) => (
           <>
-            {i18n()('zap.lnUrlEndpointError')}: {err.reason}
+            {i18n.t('zap.lnUrlEndpointError')}: {err.reason}
           </>
         )}
       </Match>
-      <Match when={query.isFetching}>{i18n()('zap.fetchingLnUrlEndpoint')}</Match>
-      <Match when={getInvoiceMutation.isPending}>{i18n()('zap.fetchingLnUrlInvoice')}</Match>
+      <Match when={query.isFetching}>{i18n.t('zap.fetchingLnUrlEndpoint')}</Match>
+      <Match when={getInvoiceMutation.isPending}>{i18n.t('zap.fetchingLnUrlInvoice')}</Match>
       <Match when={getInvoiceMutation.isError}>
-        {i18n()('zap.fetchingLnUrlInvoiceError')}: {getInvoiceMutation?.error?.message}
+        {i18n.t('zap.fetchingLnUrlInvoiceError')}: {getInvoiceMutation?.error?.message}
       </Match>
       <Match when={getInvoiceMutation.isSuccess && getInvoiceMutation.data} keyed>
         {(invoice) => (
@@ -300,10 +300,10 @@ const ZapDialog: Component<ZapDialogProps> = (props) => {
       <Match when={query.isSuccess}>
         <div class="flex flex-col items-center">
           <Show when={!allowsNostr()}>
-            <div class="pb-8 text-center">{i18n()('zap.lnurlServiceDoesNotAllowNostr')}</div>
+            <div class="pb-8 text-center">{i18n.t('zap.lnurlServiceDoesNotAllowNostr')}</div>
           </Show>
           <Show when={hasZapTag()}>
-            <div class="pb-8 text-center">{i18n()('zap.zapSplitIsNotSupported')}</div>
+            <div class="pb-8 text-center">{i18n.t('zap.zapSplitIsNotSupported')}</div>
           </Show>
           <div class="flex flex-col items-center overflow-hidden rounded px-8 py-2 text-fg-secondary">
             <Show when={lnurlServiceIcon()} keyed>
@@ -342,7 +342,7 @@ const ZapDialog: Component<ZapDialogProps> = (props) => {
               name="comment"
               class="w-full rounded-md border border-border bg-bg ring-border placeholder:text-fg-secondary focus:border-border focus:ring-primary"
               maxLength={commentAllowed() > 0 ? commentAllowed() : 70}
-              placeholder={i18n()('zap.comment')}
+              placeholder={i18n.t('zap.comment')}
               disabled={query.isPending}
               value={comment()}
               onChange={(ev) => setComment(ev.target.value)}
@@ -352,7 +352,7 @@ const ZapDialog: Component<ZapDialogProps> = (props) => {
               class="flex w-full items-center justify-center rounded bg-primary py-4 text-primary-fg hover:bg-primary-hover"
               disabled={getInvoiceMutation.isPending}
             >
-              <span class="inline-block h-6 w-6">
+              <span class="inline-block size-6">
                 <Bolt />
               </span>
             </button>
@@ -379,7 +379,7 @@ const ZapRequestModal: Component<ZapRequestModalProps> = (props) => {
   return (
     <BasicModal onClose={props.onClose}>
       <div class="p-8">
-        <Show when={isZapConfigured()} fallback={i18n()('zap.userDidNotConfigureZap')}>
+        <Show when={isZapConfigured()} fallback={i18n.t('zap.userDidNotConfigureZap')}>
           <Show when={lud06() != null && lud16() != null}>
             <div class="flex justify-center gap-3 pb-2">
               <button
@@ -393,7 +393,7 @@ const ZapRequestModal: Component<ZapRequestModalProps> = (props) => {
                 }}
                 onClick={() => setLnurlSource('lud06')}
               >
-                {i18n()('zap.lud06')}
+                {i18n.t('zap.lud06')}
               </button>
               <button
                 type="button"
@@ -406,7 +406,7 @@ const ZapRequestModal: Component<ZapRequestModalProps> = (props) => {
                 }}
                 onClick={() => setLnurlSource('lud16')}
               >
-                {i18n()('zap.lud16')}
+                {i18n.t('zap.lud16')}
               </button>
             </div>
           </Show>
diff --git a/src/core/useConfig.ts b/src/core/useConfig.ts
index 0898548..d899e3a 100644
--- a/src/core/useConfig.ts
+++ b/src/core/useConfig.ts
@@ -237,8 +237,8 @@ const useConfig = (): UseConfig => {
     const columns: ColumnType[] = [
       createFollowingColumn({ width: 'widest', pubkey }),
       createNotificationColumn({ pubkey }),
-      createPostsColumn({ name: i18n()('column.myPosts'), pubkey }),
-      createReactionsColumn({ name: i18n()('column.myReactions'), pubkey }),
+      createPostsColumn({ name: i18n.t('column.myPosts'), pubkey }),
+      createReactionsColumn({ name: i18n.t('column.myReactions'), pubkey }),
     ];
 
     if (navigator.language.includes('ja')) {
diff --git a/src/i18n/i18n.ts b/src/i18n/i18n.ts
index b5e1b07..7d9dc82 100644
--- a/src/i18n/i18n.ts
+++ b/src/i18n/i18n.ts
@@ -4,7 +4,7 @@ import LanguageDetector from 'i18next-browser-languagedetector';
 import en from '@/locales/en';
 import ja from '@/locales/ja';
 
-const i18nextInstance = (): Promise<void | typeof i18next.t> =>
+const i18nextInstance = () =>
   i18next
     .use(LanguageDetector)
     .init({
diff --git a/src/i18n/useTranslation.tsx b/src/i18n/useTranslation.tsx
index e70a89c..8f6c93e 100644
--- a/src/i18n/useTranslation.tsx
+++ b/src/i18n/useTranslation.tsx
@@ -2,38 +2,37 @@ import { Component, JSX, createContext, createEffect, createSignal, useContext }
 
 import i18next from 'i18next';
 
-type I18Next = typeof i18next.t;
+type I18Next = typeof i18next;
 
 export type I18NextProviderProps = {
   i18next: I18Next | Promise<I18Next | void> | void;
   children?: JSX.Element;
 };
 
-const I18NextContext = createContext<I18Next | Promise<I18Next | void> | void>();
+const I18NextContext = createContext<I18Next>(i18next);
 
-export const useTranslation = () => {
-  const [i18nextFn, setI18nextFn] = createSignal<I18Next>(i18next.t);
-  const maybePromise = useContext(I18NextContext);
+export const useTranslation = () => useContext<I18Next>(I18NextContext);
+
+export const I18NextProvider: Component<I18NextProviderProps> = (props) => {
+  const [i18nextInstance, setI18nextInstance] = createSignal<I18Next>(i18next);
 
   createEffect(() => {
-    if (maybePromise instanceof Promise) {
-      maybePromise
+    if (props.i18next instanceof Promise) {
+      props.i18next
         .then((instance) => {
           if (instance != null) {
-            setI18nextFn(() => instance);
+            setI18nextInstance(() => instance);
           }
         })
         .catch((err) => {
-          console.error('failed to initialize i18next', err);
+          console.error('failed to initialize i18n.text', err);
         });
-    } else if (maybePromise != null) {
-      setI18nextFn(() => maybePromise);
+    } else if (props.i18next != null) {
+      setI18nextInstance(props.i18next);
     }
   });
 
-  return i18nextFn;
+  return (
+    <I18NextContext.Provider value={i18nextInstance()}>{props.children}</I18NextContext.Provider>
+  );
 };
-
-export const I18NextProvider: Component<I18NextProviderProps> = (props) => (
-  <I18NextContext.Provider value={props.i18next}>{props.children}</I18NextContext.Provider>
-);
diff --git a/src/pages/Hello.tsx b/src/pages/Hello.tsx
index 9134229..d0b81c8 100644
--- a/src/pages/Hello.tsx
+++ b/src/pages/Hello.tsx
@@ -59,19 +59,19 @@ const Hello: Component = () => {
       <div class="rounded-md p-8 shadow-md">
         <Switch>
           <Match when={signerStatus() === 'checking'}>
-            <p>{i18n()('hello.signerChecking')}</p>
+            <p>{i18n.t('hello.signerChecking')}</p>
           </Match>
           <Match when={signerStatus() === 'unavailable'}>
-            <h2 class="font-bold">{i18n()('hello.signerUnavailable')}</h2>
-            <p>{i18n()('hello.signerUnavailableMessage')}</p>
+            <h2 class="font-bold">{i18n.t('hello.signerUnavailable')}</h2>
+            <p>{i18n.t('hello.signerUnavailableMessage')}</p>
             <SignerExtensions />
             <div class="flex flex-col items-center gap-2">
-              <p class="text-sm">{i18n()('hello.reloadAfterInstall')}</p>
+              <p class="text-sm">{i18n.t('hello.reloadAfterInstall')}</p>
               <button
                 class="rounded bg-primary px-4 py-2 text-sm font-bold text-primary-fg hover:bg-primary-hover"
                 onClick={() => window.location.reload()}
               >
-                {i18n()('hello.reload')}
+                {i18n.t('hello.reload')}
               </button>
             </div>
           </Match>
@@ -80,7 +80,7 @@ const Hello: Component = () => {
               class="rounded bg-primary p-4 text-lg font-bold text-primary-fg hover:shadow-md"
               onClick={handleLogin}
             >
-              {i18n()('hello.loginWithSigner')}
+              {i18n.t('hello.loginWithSigner')}
             </button>
           </Match>
         </Switch>
diff --git a/src/pages/NotFound.tsx b/src/pages/NotFound.tsx
index 78dc8f7..1bc7308 100644
--- a/src/pages/NotFound.tsx
+++ b/src/pages/NotFound.tsx
@@ -7,10 +7,10 @@ const NotFound: Component = () => {
 
   return (
     <div class="container mx-auto max-w-[640px] py-10">
-      <h1 class="text-4xl font-bold text-fg">{i18n()('notFound.title')}</h1>
+      <h1 class="text-4xl font-bold text-fg">{i18n.t('notFound.title')}</h1>
       <p class="pt-4">
         <a class="text-link underline" href="/">
-          {i18n()('notFound.back')}
+          {i18n.t('notFound.back')}
         </a>
       </p>
     </div>