🔥 Auto-Fix Invalid JSON

Example — Broken JSON

Issues: unquoted keys, single quotes, trailing comma, missing comma, missing closing brace.

How Auto-Fix Works

Invalid JSON is one of the most common frustrations developers face. A single missing comma, an unquoted key, or a trailing comma can break an entire configuration file or API payload. Rather than manually hunting for errors, this tool automatically detects and repairs common JSON syntax issues.

Issues This Tool Can Repair

• Missing commas — Detects values on separate lines without separating commas and adds them
• Unquoted keys — Wraps bare property names in double quotes (e.g., name: becomes "name":)
• Single quotes — Converts single-quoted strings to proper double quotes
• Trailing commas — Removes commas before closing braces } or brackets ]
• Smart/curly quotes — Replaces typographic quotes with standard ASCII quotes
• Unmatched brackets — Adds missing closing braces or brackets
• BOM characters — Removes invisible byte-order marks that break parsing

How Is This Different from JSON Lint?

Traditional JSON validators like JSONLint only tell you what's wrong — they report errors but don't fix them. This tool goes further by actually repairing the broken JSON automatically. It shows you exactly which fixes were applied, so you can learn from the corrections and understand what went wrong.

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