Réparation JSON

Repair common JSON syntax issues and turn broken input into valid JSON.

All repair attempts happen locally in your browser. Your JSON is never uploaded.

Continue with the invalid JSON repair guide

If you want a more structured walkthrough of trailing commas, single quotes, unquoted keys, and when to use Repair vs Validator vs Diff, open the guide next.

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Related Tools

Validateur JSON

Détectez et mettez en évidence les erreurs de syntaxe JSON en temps réel

Visionneuse JSON

Formatez et embellissez instantanément votre JSON avec une indentation appropriée

Testeur JSONPath

Test JSONPath expressions and inspect matched paths and results.

Différences JSON

Comparez deux objets JSON et visualisez les différences avec une comparaison côte à côte.

How to use JSON Repair

Paste broken JSON with trailing commas, single quotes, unquoted keys, or Python-style values into the left panel and run repair.

The tool applies common repair heuristics, returns valid JSON on the right, and lists the fixes that were used.

Everything runs locally in your browser, which makes it useful for debugging invalid API payloads, logs, and copied snippets.