Developer Tool

JSON Compare

Diff two JSON documents with a tree view, line-highlighted side-by-side editor, and one-click JSON Patch (RFC 6902) export. Everything runs locally in your browser.

Browser-only, no upload

JSON workspace

Ctrl+Enter comparen/p next / prev diff

Auto compare

JSON A0.4 KB

Valid JSON

JSON B0.6 KB

Valid JSON

+Added 3−Removed 0~Changed 7!Type 0·10 total

1 / 10

root{4 items}

"name":"DailyUtili"

"version":"1.0.0"→"1.1.0"~ Changed

"tools":[3 items]has changes

[0]{3 items}has changes

"id":"json-formatter"→"qr-generator"~ Changed

"title":"JSON Formatter"→"QR Code Generator"~ Changed

"tags":[2 items]has changes

[0]"dev"

[1]"json"→"image"~ Changed

[1]{3 items}has changes

"id":"qr-generator"→"json-formatter"~ Changed

"title":"QR Generator"→"JSON Formatter"~ Changed

"tags":[2 items]has changes

[0]"dev"

[1]"json"+ Added

[2]{3 items}+ Added

"id":"json-compare"

"title":"JSON Compare"

"tags":[2 items]+ Added

"meta":{3 items}has changes

"released":"2025-09-12"

"maintainers":[2 items]has changes

[0]"zeeshan"

[1]"contrib"+ Added

"stars":412→413~ Changed

How to use

Paste, drop a file, or load a sample into JSON A and JSON B.
Toggle the options you need: ignore array order, match arrays by key, numeric tolerance, ignored keys, and more.
Pick a view: Tree for structured browsing, Side-by-side for line-level highlighting, or JSON Patch for an RFC 6902 export.

FAQs

Is my JSON ever uploaded?

No. Parsing, diffing, and patch generation all run in your browser. Nothing leaves the page.

Can I compare arrays whose order does not matter?

Yes. Enable Ignore array order to match items as a multiset, or set Match arrays by key (for example id) to align arrays of objects by a stable property instead of by index.

How do I ignore noisy fields like updated_at or generated IDs?

Use Ignore keys (comma-separated names) or the Ignore key regex field to skip any property name that matches a pattern at any depth.

What does the JSON Patch view produce?

A standards-compliant RFC 6902 patch that can be applied to JSON A to produce JSON B. Useful for API change logs, audit trails, or feeding into PATCH endpoints.

Does it handle large JSON documents?

Yes. The diff runs synchronously and is fast for typical payloads (a few MB). For very large inputs, auto-compare is disabled and you can run the comparison manually.

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