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JSON diff

Compare two JSON documents structurally and see additions, removals, and changes.

Original (A)

Modified (B)

Difference

No differences or invalid input.

About JSON diff

Structural diff highlights what changed between two JSON documents, even when whitespace or key order differs. Great for reviewing config changes and verifying API contract updates.

  • Sort keys first for stable comparisons.
  • Array order matters — swap reorders to detect moves.
  • Run before merging API responses or migrating configs.
  • Both inputs stay in your browser; nothing is uploaded.