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JSON Compare

Diff two JSON documents and list added, removed, and changed paths.

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Original (A)

Modified (B)

Differences

  • changed
    age

    30 → 31

  • added
    active

    true

About the JSON Compare

Compare two JSON structures and get a structural diff showing exactly which paths were added, removed, or changed, along with old and new values. Great for reviewing API response changes or config drift.

Examples

Compare two objects

{"a":1} vs {"a":2,"b":3}

Output

a: 1 → 2 (changed), b: 3 (added)

Keyboard shortcuts

  • Copy the main outputCtrl / ⌘ + Shift + C
  • Download the resultCtrl / ⌘ + S
  • Share this toolCtrl / ⌘ + Shift + S
  • Reset the inputsAlt + R
  • Open the tool search paletteCtrl / ⌘ + K

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Frequently asked questions

Version 1.0.0 · Updated 2026-08-06 · Runs entirely in your browser