JSON Repair, Formatter & YAML Converter
Fix broken JSON, then format it, minify it or export it as YAML.
How it works
JSON copied from chats, logs or code is often almost valid. This tool reads it with a forgiving parser and lists every repair it made, so you can see what changed.
Fixes: single and smart quotes, unquoted keys, trailing or missing commas, // and # comments, True/False/None, hex numbers and unclosed brackets. Example: {name: 'Acme', ok: True,} becomes valid JSON with "ok": true. YAML export is supported; YAML input is not.
Runs entirely in your browser; nothing is uploaded. As-is local-first edge utility, provided without warranty.