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instaarchive-viewer/README.md

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# InstaArchive Viewer
A high-performance React PWA for browsing archived Instagram data with a native-feeling interface. Supports both official Instagram exports and Instaloader archives.
## Features
- **Local Privacy**: All processing is done client-side using browser APIs. Your data never leaves your computer.
- **Multiple Formats**: Supports official Instagram JSON exports and Instaloader regex-based naming conventions.
- **Metadata Support**: Robust parsing of `.json` and `.json.xz` files for captions, timestamps, and story metadata.
- **Story Viewer**: Native-like story experience with segmented progress bars, auto-playback, and audio controls.
- **Media Grid**: Customizable 1:1 or 3:4 grid views with adjustable offsets for aesthetic alignment.
- **Auto-Deduplication**: Intelligently prefers video files over thumbnail images for the same post.
## Run Locally
**Prerequisites:** Node.js (LTS recommended)
1. **Install dependencies:**
```bash
npm install
```
2. **Start the development server:**
```bash
npm run dev
```
3. **Open in browser:**
Navigate to `http://localhost:3000` and select your Instagram archive directory.
## Building for Production
To generate a production-ready build in the `dist` folder:
```bash
npm run build
```
To preview the build:
```bash
npm run preview
```