Paste broken JSON, repair common syntax mistakes in one click, validate the result, and copy or download clean output. Everything runs locally in your browser.
Fixes comments, trailing commas, smart quotes
Quotes unquoted keys
Converts single-quoted strings
Pretty-print + minify
State: Waiting for input
Input chars: 0
Output chars: 0
Your repaired JSON will appear here.
Repair notes
This tool uses safe heuristics for common JSON-like mistakes. It is great for logs, copied configs, API examples, and hand-written payloads.
If the structure is deeply ambiguous, the validator will tell you where parsing still fails so you can make the final correction.
No data leaves your browser. Useful for debugging sensitive payloads locally.