JSON Repair Tool: Fix Invalid JSON Locally
Repairs common malformed JSON syntax such as comments, trailing commas, unquoted keys, single-quoted strings, smart quotes, and Python-style literals without executing the input.
Runs locally in your browserInvalid or JSON-like input
Safe repair is intentionally limited
The tool handles comments, trailing commas, single quotes, unquoted keys, smart quotes and common non-JSON literals. It never runs JavaScript, guesses missing business data, or silently hides an unrepaired parse error.