diff --git a/app.py b/app.py
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+++ b/app.py
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+#!/usr/bin/env python
+# -*- coding:utf-8 -*-
+# Power by Zongsheng Yue 2024-12-11 17:17:41
+
+import warnings
+warnings.filterwarnings("ignore")
+
+import argparse
+import numpy as np
+import gradio as gr
+from pathlib import Path
+from omegaconf import OmegaConf
+from sampler_invsr import InvSamplerSR
+
+from utils import util_common
+from utils import util_image
+from basicsr.utils.download_util import load_file_from_url
+
+def get_configs(num_steps=1, chopping_size=128, seed=12345):
+    configs = OmegaConf.load("./configs/sample-sd-turbo.yaml")
+
+    if num_steps == 1:
+        configs.timesteps = [200,]
+    elif num_steps == 2:
+        configs.timesteps = [200, 100]
+    elif num_steps == 3:
+        configs.timesteps = [200, 100, 50]
+    elif num_steps == 4:
+        configs.timesteps = [200, 150, 100, 50]
+    elif num_steps == 5:
+        configs.timesteps = [250, 200, 150, 100, 50]
+    else:
+        assert num_steps <= 250
+        configs.timesteps = np.linspace(
+            start=250, stop=0, num=num_steps, endpoint=False, dtype=np.int64()
+        ).tolist()
+    print(f'Setting timesteps for inference: {configs.timesteps}')
+
+    # path to save Stable Diffusion
+    sd_path = "./weights"
+    util_common.mkdir(sd_path, delete=False, parents=True)
+    configs.sd_pipe.params.cache_dir = sd_path
+
+    # path to save noise predictor
+    started_ckpt_name = "noise_predictor_sd_turbo_v5.pth"
+    started_ckpt_dir = "./weights"
+    util_common.mkdir(started_ckpt_dir, delete=False, parents=True)
+    started_ckpt_path = Path(started_ckpt_dir) / started_ckpt_name
+    if not started_ckpt_path.exists():
+        load_file_from_url(
+            url="https://huggingface.co/OAOA/InvSR/resolve/main/noise_predictor_sd_turbo_v5.pth",
+            model_dir=started_ckpt_dir,
+            progress=True,
+            file_name=started_ckpt_name,
+        )
+    configs.model_start.ckpt_path = str(started_ckpt_path)
+
+    configs.bs = 1
+    configs.seed = 12345
+    configs.basesr.chopping.pch_size = chopping_size
+    configs.basesr.chopping.extra_bs = 4
+
+    return configs
+
+def predict(in_path, num_steps=1, chopping_size=128, seed=12345):
+    configs = get_configs(num_steps=num_steps, chopping_size=chopping_size, seed=12345)
+
+    sampler = InvSamplerSR(configs)
+
+    out_dir = Path('invsr_output')
+    if not out_dir.exists():
+        out_dir.mkdir()
+    sampler.inference(in_path, out_path=out_dir, bs=1)
+
+    out_path = out_dir / f"{Path(in_path).stem}.png"
+    assert out_path.exists(), 'Super-resolution failed!'
+    im_sr = util_image.imread(out_path, chn="rgb", dtype="uint8")
+
+    return im_sr, str(out_path)
+
+title = "Arbitrary-steps Image Super-resolution via Diffusion Inversion"
+description = r"""
+<b>Official Gradio demo</b> for <a href='https://github.com/zsyOAOA/InvSR' target='_blank'><b>Arbitrary-steps Image Super-resolution via Diffuion Inversion</b></a>.<br>
+🔥 InvSR is an image super-resolution method via Diffusion Inversion, supporting arbitrary sampling steps.<br>
+"""
+article = r"""
+If you've found InvSR useful for your research or projects, please show your support by ⭐ the <a href='https://github.com/zsyOAOA/InvSR' target='_blank'>Github Repo</a>. Thanks!
+[![GitHub Stars](https://img.shields.io/github/stars/zsyOAOA/InvSR?affiliations=OWNER&color=green&style=social)](https://github.com/zsyOAOA/InvSR)
+
+---
+If our work is useful for your research, please consider citing:
+```bibtex
+@inproceedings{yue2023resshift,
+  title={ResShift: Efficient Diffusion Model for Image Super-resolution by Residual Shifting},
+  author={Yue, Zongsheng and Wang, Jianyi and Loy, Chen Change},
+  booktitle = {Advances in Neural Information Processing Systems (NeurIPS)},
+  year={2023},
+  volume = {36},
+  pages = {13294--13307},
+}
+```
+
+📋 **License**
+
+This project is licensed under <a rel="license" href="https://github.com/zsyOAOA/InvSR/blob/master/LICENSE">S-Lab License 1.0</a>.
+Redistribution and use for non-commercial purposes should follow this license.
+
+📧 **Contact**
+
+If you have any questions, please feel free to contact me via <b>zsyzam@gmail.com</b>.
+![visitors](https://visitor-badge.laobi.icu/badge?page_id=zsyOAOA/InvSR)
+"""
+demo = gr.Interface(
+    fn=predict,
+    inputs=[
+        gr.Image(type="filepath", label="Input: Low Quality Image"),
+        gr.Dropdown(
+            choices=[1,2,3,4,5],
+            value=1,
+            label="Number of steps",
+            ),
+        gr.Dropdown(
+            choices=[128, 256],
+            value=128,
+            label="Chopping size",
+            ),
+        gr.Number(value=12345, precision=0, label="Ranom seed")
+    ],
+    outputs=[
+        gr.Image(type="numpy", label="Output: High Quality Image"),
+        gr.File(label="Download the output")
+    ],
+    title=title,
+    description=description,
+    article=article,
+    examples=[
+        ['./testdata/RealSet80/29.jpg',  3, 128, 12345],
+        ['./testdata/RealSet80/32.jpg',  1, 128, 12345],
+        ['./testdata/RealSet80/0030.jpg',  1, 128, 12345],
+        ['./testdata/RealSet80/2684538-PH.jpg', 1, 128, 12345],
+        ['./testdata/RealSet80/oldphoto6.png', 1, 128, 12345],
+      ]
+    )
+
+demo.queue(max_size=5)
+demo.launch(share=True)
+