JSON Repair Tool

Fix common JSON syntax problems

Copied config snippets and API notes often include trailing commas, comments, single quotes, unquoted keys, or Python-style values. This repair tool cleans those common issues, then validates the result with the browser JSON parser.

If the repaired text still cannot be parsed safely, the tool shows an error instead of guessing.

Practical examples

• Clean a pasted config snippet before using it as JSON.
• Remove comments and trailing commas from copied object data.
• Beautify the repaired output before sharing it in an issue or API client.

Related JSON tools

Use the JSON Validator for strict syntax checks, the JSON Formatter for already-valid JSON, or the JSON Viewer to inspect nested repaired output.

FAQ

What can this repair?

It handles common issues such as comments, trailing commas, single-quoted strings, unquoted object keys, smart quotes, and True, False, or None values.

Can it fix every broken JSON file?

No. If the input is ambiguous or missing too much structure, the tool shows a clear error instead of inventing data.

Does it upload my JSON?

No. Repairing and validation run locally in your browser.

Does repair change the formatting?

Yes. When repair succeeds, the output is beautified with two-space indentation.

Should I still validate the result?

The tool validates before showing output. For strict checking without repairs, use the JSON Validator.