How are arrays diffed?

Position-based — items at the same index are compared, mismatched lengths show as adds/removes at the end.

JSON Diff

Compare two JSON values structurally — see exactly what was added, removed, or changed, with full key paths.

Left JSON

Right JSON

Changes

How to use JSON Diff

Paste the original JSON on the left.
Paste the new JSON on the right.
Click Compare to see the structural diff.

What is JSON Diff?

Useful for comparing API responses across deploys, diffing config files, or reviewing JSON-formatted changes. Output groups changes by type with color coding: green for adds, red for removes, yellow for changes.

FAQ

How are arrays diffed?: Position-based — items at the same index are compared, mismatched lengths show as adds/removes at the end.

Related tools

JSON Formatter / Validator
Text Diff / Compare
CSV ↔ JSON