JSON Diff Tool
Compare two JSON documents side by side. Paste JSON A and JSON B, press Compare, and get a color-coded list of every added, removed and changed value — free, no signup, everything runs in your browser.
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Frequently asked questions
It compares two JSON documents and lists every added, removed and changed value with its JSON path, so you can spot differences between configs or API responses.
The tool checks both sides before comparing and tells you exactly which side has the error, including the line and position of the problem.
Yes. The diff walks the full structure recursively, so nested objects and arrays are compared key by key and index by index.
Yes, comparing JSON is completely free with no signup, and everything runs in your browser so your data never leaves your device.