JSON Compare
Compare two JSON documents online and highlight every addition, removal, and change. Free JSON compare tool with key-sorted, noise-free side-by-side results.
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Frequently asked questions
What is JSON Compare?+
Compare two JSON documents side by side — keys are sorted so formatting differences don't create noise.
How do I use JSON Compare?+
Added keys shown in green, removed in red, unchanged in grey. JSON-aware: reorders keys before diffing so only real changes show. Jump Prev/Next between change blocks in long documents. Useful for comparing API responses, config files, or database snapshots
Is JSON Compare free?+
Yes, JSON Compare is completely free. No account or sign-up required, and all processing happens in your browser — nothing is sent to a server.
Is my data safe when I use JSON Compare?+
Yes. JSON Compare runs entirely in your browser using JavaScript and Web APIs — your input is never uploaded, transmitted, or stored on any server.