Text Diff JSON Formatter
Help
  • Preserves high-precision numbers
  • Click "Sample" to view an example
  • Click the Settings button for advanced options

JSON Diff

This free online JSON diff tool compares two JSON documents and highlights the differences.

All tools on this site run entirely in your browser locally. No data is uploaded to any server.

Features:

  • JSON Format: Auto-formats as you type
  • DICT to JSON: Auto-converts Python dict to JSON when formatting
  • Unescape: Auto-unescapes characters when inputting escaped JSON
  • Repair JSON: Auto-repairs invalid JSON

Diff Mark:

  • Red Mark: Content that appears only on the left compared to the right
  • Green Mark: Content that appears only on the right compared to the left
  • Line number redirect: Click a diff line to jump to it