JSON Diff Checker

Compare two JSON documents — find what was added, removed, or changed. Used for API response comparison, config diff, and deployment verification.

Paste two JSON documents and click Compare...

🟢📖 What JSON Diff Detects

This tool performs a deep comparison of two JSON structures. It detects three types of changes:

  • Added — keys present in the modified JSON but absent from the original.
  • Removed — keys present in the original but absent from the modified version.
  • Changed — keys present in both but with different values.

Keys that are identical in both documents are not reported — keeping the diff output focused on what matters. Nested objects are compared recursively with full key paths.

See also: JSON Formatter · JSON Schema Validator · JSON →CSV