JSON Support — Formatter & Viewer

Instantly format, view, and navigate JSON in your browser. Syntax highlighting, collapsible nodes, search, and one-click copy.

**Tired of staring at walls of unformatted JSON?** JSON Support automatically detects and formats JSON pages in your browser with beautiful syntax highlighting, a collapsible tree view, and instant search. **Auto-Format JSON Pages** Navigate to any URL that returns JSON (API endpoints, .json files, webhook inspectors) and JSON Support formats it instantly. No clicking, no pasting — it just works. **Popup Tools** Click the extension icon for quick access to: • Format — Paste JSON, get it pretty-printed with syntax highlighting • Minify — Compress JSON to a single line, see bytes saved • Validate — Check if your JSON is valid, get line-level error messages • Convert — One-click link to convert JSON to Excel spreadsheets **Features** ✓ Auto-detects JSON pages and formats them ✓ Syntax highlighting (keys, strings, numbers, booleans, null) ✓ Collapsible/expandable nodes ✓ Search across keys and values ✓ Copy JSON paths with one click ✓ Copy entire formatted JSON ✓ Toggle between formatted and raw view ✓ Expand All / Collapse All ✓ Shows file size and item count ✓ Dark theme for comfortable reading ✓ Zero tracking, zero data collection ✓ Works offline after installation **Privacy** JSON Support processes everything locally in your browser. No data is collected, stored, or sent to any server. Your JSON stays on your machine. **Free & Open** No premium tier, no account needed, no ads. Just a clean, fast JSON tool. Built by the team behind jsonsupport.com