Paste JSON to format, validate, or minify it — with syntax highlighting and exact error line numbers. Everything runs locally in your browser.
Result will appear here…
Paste any JSON string into the Input panel. Click Format to prettify it with syntax highlighting and your chosen indentation (2 or 4 spaces). Click Minify to compress whitespace for production payloads. If the JSON is invalid, the error message shows the exact line and column where parsing failed so you can fix it quickly.
Pasting JSON auto-formats it immediately — no button click needed. Click Copy to copy the clean output to your clipboard. Everything runs in your browser: no data is sent to any server, so it's safe with API responses, config files, and private data.
TextForge is a free Chrome extension that transforms, cleans, and extracts text from any webpage — including JSON extraction from API responses — without ever leaving your tab.
Get TextForge — Free on Chrome Web Store →