Is my JSON uploaded to a server?

No. Parsing and diffing happen entirely in your browser, so API payloads and credentials in the JSON stay on your device.

What output formats are available?

You get an inline delta view, a copyable jsondiffpatch delta, and an RFC 6902 JSON Patch you can export or copy for use in code.

Can I ignore parts of the JSON?

Yes. Enable match-by-key to align array items, and list ignore paths (for example *.id or user.token) to skip fields that change on every run.

Free JSON Compare Tool

Compare two JSON documents and see added, removed, and changed values, plus a precise RFC 6902 JSON Patch, all in your browser.

Browser-side JSON comparison

Paste JSON or open local files. The comparison runs in the current browser session and nothing is sent to a server.

Show only differences

Match by key

Syntax highlighting

Sort keys before compare

Ignore paths

+ 0− 0~ 0

Original

Modified

How to compare JSON

Paste or open your JSON

Paste two JSON documents or open them from your device. Invalid JSON is caught before comparison, and you can prettify either side with one click.

Compare and inspect

Click Compare to see added, removed, and changed values in a structured delta. Match objects by a key to compare reordered arrays, and ignore noisy paths such as ids or tokens.

Export the change

Copy a jsondiffpatch delta or a standards-based RFC 6902 JSON Patch, or export a readable report. Toggle type-change highlighting and show-only-differences to focus on what matters.

What you can compare

Use it for API responses, configuration files, database exports, feature flags, or any JSON. Match objects by a key to compare reordered arrays, and ignore volatile paths such as ids, timestamps, or tokens so the real changes stand out.

Delta and JSON Patch

The structured delta shows exactly what changed, value by value. From the same comparison you can copy a jsondiffpatch delta or a standards-based RFC 6902 JSON Patch, and switch on type-change highlighting to catch when a value changes kind - for example from string to number.

Flexible inputs

Type or paste JSON, open files from disk, or paste from the clipboard. Use the prettify button to normalize either side, then toggle type-change highlighting and show-only-differences to focus on meaningful edits.