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Tools / Data & JSON

JSON Diff Checker

Compare two JSON documents by values, see added, removed and changed paths, and export differences locally.

Compares values, not whitespace or key order. Arrays are compared by index.

The JSON is processed locally in your browser.

What is JSON Diff Checker?

Unlike a text comparison, a JSON structural diff ignores formatting and object-property order. It compares arrays by index and identifies changes, additions and removals using JSON Pointer-style paths. It does not detect reordered array items as semantic moves.

How to use this tool

  1. Paste the original JSON in the first editor and the modified JSON in the second.
  2. Run the structural comparison to see added, removed and changed paths.
  3. Copy or export the machine-readable difference list.

Example

Before: {"a":1} | After: {"a":2} | Changed: /a

Related developer tools

JSON FormatterJSON Tree ViewerJSONPath Tester