Data & Formats

JSON Diff

Compare two JSON documents semantically — handles nested objects, arrays (positional, by-key, by-value or set-like), type mismatches, key order, and emits RFC 6902 / RFC 7396 patches.

Total changes

Added

Removed

Changed

Type changed

Identical?

A · before

14 lines274 B19 nodesValid JSON

B · after

16 lines374 B24 nodesValid JSON

Diff settings

Array matching

How to pair array elements. `by-key` requires an identifying field shared by both sides (e.g. `id`).

Numeric tolerance

Numbers within ±tolerance are considered equal. Use 0 to require exact match.

Sort keys before diffRenders both documents through a recursive key sort first.Case-insensitive keys & strings`Name` and `name` are treated as the same key.Ignore whitespace in strings`"hello world"` and `"helloworld"` compare as equal.Treat `null` as missingDon't flag `{a: null}` vs `{}` as a difference.Ignore key orderWalk both sides in sorted-key order before diffing.Ignore added keysUseful for 'is B a superset of A?' checks.

Ignored paths (one per line)

Regex or wildcard patterns matched against the JSON pointer and the dotted display path.

${…}

name:"uxTools"

~version:"1.2.0"→"1.3.0"

active:true

tags[…]

users[…]

meta{…}