A keyboard driven JSON explorer. Simple, beautiful, fast.

• Lightning Fast - Native JSON parsing with virtualized rendering. Handles large files smoothly.
• Keyboard First - Vim-style navigation (j/k, h/l, gg, G) for power users.
• Beautiful Themes - 13 carefully crafted color schemes (7 dark, 6 light).
• Smart Search - Search keys and values instantly with highlighted results.
• Copy Paths - JSONPath, jq, or JavaScript accessor formats with one click.
• Share JSON - Compressed URLs for small files, server storage for large files (up to 5MB).
• Multi-Tab Support - Each browser tab maintains its own persisted state.
• Import Anywhere - Paste JSON, upload files, or import from URLs.
• Auto Repair - Automatically fix common JSON syntax errors.
• Zero Tracking - Fully client-side processing. Your data never leaves your browser.

Tip: Star this repo to get notified of updates and help others discover the project!

# Install dependencies
npm install

# Run development server
npm run dev

# Build for production
npm run build

Open http://localhost:3000 to start exploring JSON.

SuperJSON supports two sharing modes:

• URL Sharing - Small JSON files are compressed and embedded directly in the URL. No server required.
• Server Storage - Large JSON files (>8KB compressed) are stored server-side with a 30-day expiration.

Share links are created automatically based on file size when you click the share button.

• Next.js 15 (App Router, React 19)
• TypeScript
• Tailwind CSS
• Zustand (State management)
• @tanstack/react-virtual (Virtualized lists)
• Turso (SQLite edge database for share storage)
• LZ-String (URL compression)

For server-side share storage, set these environment variables:

TURSO_DATABASE_URL=libsql://your-database.turso.io
TURSO_AUTH_TOKEN=your-auth-token

MIT