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JSON Cleaner and Repair Tool

JSON Tools

Repair common JSON formatting problems before validation.

Parameters
Input
Output
Auto-calculate
0 characters · 0 bytes

Use cases

When to use JSON Cleaner and Repair Tool

Repair common JSON formatting problems before validation.

1Clean JSON copied from chat or documentation
2Remove BOM and zero-width characters before parsing
3Convert JSON5-style comments and trailing commas into strict JSON
4Compare JSON structures across development, staging, and production APIs
5Prepare reproducible JSON payloads for API documentation, bug reports, or test cases
6Generate Schemas, language models, Excel workbooks, or Postman requests from JSON samples
7Review duplicate keys, nulls, field types, and contract changes before release

Guidance

Get reliable results

  1. 1Check the repaired output before sending it to production
  2. 2Review strings containing smart punctuation that may be meaningful
  3. 3Return to the source when braces or content are missing
The cleaner handles deterministic formatting issues and intentionally avoids guessing missing business content or truncated structures.

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