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JSON Repair

JSON Repair

Repair and fix malformed JSON online. Automatically fixes trailing commas, unquoted keys, single quotes, and more.

Repairs trailing commas in objects and arrays Adds quotes to unquoted property keys Converts single quotes to double quotes Replaces JavaScript literals (NaN, Infinity, undefined) Removes comments from JSON Fixes missing commas between elements Copy and download repaired JSON Import JSON from URL or file

Input JSON

Paste your JSON here

Repaired Output

Copy or download the repaired JSON

Key Features

  • Repairs trailing commas in objects and arrays
  • Adds quotes to unquoted property keys
  • Converts single quotes to double quotes
  • Replaces JavaScript literals (NaN, Infinity, undefined)
  • Removes comments from JSON
  • Fixes missing commas between elements
  • Copy and download repaired JSON
  • Import JSON from URL or file

How to Use

  1. Paste your malformed JSON into the input editor.
  2. Click Repair to automatically fix common issues.
  3. The repaired JSON will appear in the output editor.
  4. Click Validate to check for any remaining errors.
  5. Copy or download the repaired output.

Online JSON Repair Tool - Fix Broken JSON Instantly

Fix broken, malformed, or corrupted JSON with our intelligent online JSON repair tool. Paste invalid JSON with missing quotes, trailing commas, or syntax errors, and our tool automatically repairs it and returns valid JSON. Perfect for recovering data, fixing API responses, and cleaning up corrupted files. No installation required—repair JSON in seconds directly in your browser.

Intelligent JSON repair features

  • Auto-repair: Fix common JSON errors automatically
  • Missing quotes: Add missing quotes around keys and string values
  • Trailing commas: Remove invalid trailing commas
  • Comment removal: Strip comments from JSON (not valid in JSON)
  • Syntax correction: Fix bracket and brace mismatches
  • Beautification: Format repaired JSON with proper indentation
  • Copy and download: Export repaired JSON instantly

Common JSON repair scenarios

Use our JSON fixer to recover data from corrupted files, fix API responses with formatting issues, clean up exported data, and repair configuration files. Combine with our JSON validator to verify repairs and JSON formatter for final beautification.

Why developers choose our JSON repair tool

  • Free, no signup or installation needed
  • Works on all devices and modern browsers
  • Handles severely corrupted JSON
  • Intelligent error recovery
  • Browser-based—your data stays private

Fix broken JSON with confidence using our free online JSON repair tool. Trusted by developers worldwide for data recovery and JSON troubleshooting.

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