---
title: GitHub Notebook Fixer
emoji: 🔧
colorFrom: blue
colorTo: indigo
sdk: gradio
sdk_version: "6.9.0"
app_file: app.py
pinned: false
license: mit
short_description: Fix .ipynb files that show "Invalid Notebook" on GitHub
---

# 🔧 GitHub Notebook Fixer

Upload a `.ipynb` notebook and this Space will:

1. **Predict** if it will render on GitHub or fail
2. **Diagnose** every issue (missing widget state, oversized outputs, bad metadata)
3. **Return a fixed `.ipynb`** ready to push

## Why do notebooks break on GitHub?

The most common cause is **Google Colab saving widget metadata without the required `state` key**. GitHub's nbconvert renderer requires `metadata.widgets["application/vnd.jupyter.widget-state+json"]["state"]` to exist — if it doesn't, you get the dreaded:

> **Invalid Notebook** — the 'state' key is missing from 'metadata.widgets'

Other causes include oversized cell outputs (>500 KB), giant base64 images, and missing `kernelspec` metadata.

## How to use

1. Upload your `.ipynb` file
2. Click **Analyze & Fix**
3. Read the diagnosis report
4. Download the fixed notebook
5. Push to GitHub — it will render!

## 🔒 Privacy & Data

**Your files are never stored.**

- Your `.ipynb` file is read **in memory** only — it never touches a database or persistent storage.
- A short-lived OS temp file is created so you can download the fixed notebook, then it is automatically deleted.
- No personal information, file content, or usage data is logged or shared with third parties.
- Once your session ends, every trace of your file is gone.

## Run locally

```bash
pip install gradio
python app.py
```