JSON Diff

Compare two JSON documents key by key.

Runs locallyNo signupMobile readyCopyableFree

⇹JSON Diff

All processing happens locally

JSON A

JSON B

Differences

JSON Diff is a JSON comparison tool that walks every path, results are produced instantly with no page reload and nothing is sent to a server.

Paste your content, press the main button, then copy or download the output from the corner of the panel.

Paste or type your content into the input field at the top, or press the sample button to load demo data.
Adjust the options below the input, such as output format, separators, letter case or precision.
Press the main button to run the conversion. Results appear instantly in the output panel without a page reload.
When the result looks right, use the copy button in the corner, or download it as a local file.

Clean up stray spaces and line breaks before pasting for more accurate results.

Does key order matter?+

No. Comparison works on key paths rather than raw text order, so identical data matches regardless of ordering.

How are arrays compared?+

Array items are compared by index, so reordered elements show up as differences.

Is JSON Diff free to use?+

Yes. The tool is completely free with no usage limits, and you never need an account or a sign-in.

Is the text I enter uploaded anywhere?+

No. All processing runs locally in your browser, so the input never reaches a server and is never logged or stored.

Does JSON Diff work on a phone or tablet?+

Yes. The layout is mobile-first, so inputs and buttons stay comfortable on phones and tablets in both orientations.

Can I copy the result into my own document?+

Yes. A copy button in the output panel puts the result on your clipboard, and you can also download it as a text file.