Repair a corrupted JSON file (.json)
JSON is strict: one stray comma or a single quote makes the whole file unreadable. Most broken JSON comes from hand edits, JavaScript objects pasted as JSON, or Python output.
What our repair does
- Remove trailing commas
- Replace single quotes with double quotes
- Quote property names
- Remove comments
- Convert True/False/None to valid JSON
- Repair JSON Lines files line by line
The check and preview are free. The repaired file costs $1.99.
Drop your file here
Or from your device.
Free check, up to 50 MB. No account needed.
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Common apps, APIs, config files errors
SyntaxError: Unexpected token } in JSON at position 42
Something at that position is not valid JSON — very often a trailing comma before } or ]. How to fix it
json.decoder.JSONDecodeError: Expecting property name enclosed in double quotes
A key is unquoted or uses single quotes — valid in JavaScript or Python, not in JSON. How to fix it