Free browser utility
JSON Repair Tool
The repair is intentionally conservative. Always review repaired data before using it in production.
✓ Local processing✓ No registration✓ No file upload
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Before
{name: 'demo', enabled: true,}→
After
{"name":"demo","enabled":true}How to use JSON Repair Tool
- Paste text or select local files in the tool area.
- Choose any options that match the source data.
- Run the conversion or repair and review the preview.
- Copy the result or download the generated file.
Privacy and local processing
This project performs processing, document generation or calculations in your browser. The page does not include an upload endpoint, analytics script or remote processing API call. Avoid pasting sensitive data into websites you do not control.
Frequently asked questions
Can every broken JSON file be repaired automatically?
No. Severely ambiguous data still requires manual correction. The tool reports when the result remains invalid.
Will comments be kept?
No. JavaScript-style comments are removed because standard JSON does not support them.