JSON guide

Fix JSON Trailing Comma

Remove trailing commas from JSON objects and arrays so strict JSON parsers can read the data.

Open AI JSON Repair

How to do it

  1. Paste JSON that fails with an unexpected token error.
  2. Repair the JSON to remove commas before closing braces or brackets.
  3. Use JSON Validator to confirm the result is valid.

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FAQ

Are trailing commas allowed in JSON?

No. JavaScript allows them in many places, but strict JSON does not.

What error do trailing commas cause?

Many parsers report an unexpected token near the closing brace or bracket.

Can I format after fixing?

Yes. The repair tool formats the repaired JSON automatically.