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JSON Lint

Validate and format your JSON data. Errors are highlighted with line numbers.

What is JSON Lint?

JSON Lint is a validator and formatter for JSON (JavaScript Object Notation) data. It checks your JSON for syntax errors and formats it with proper indentation for readability.

How to use

  1. Paste your JSON data into the input editor
  2. Click "Validate & Format"
  3. If valid, the formatted JSON appears in the output. If invalid, the error message shows the exact location.