HTMLJSON Diff
Paste two JSON objects and see exactly what changed: added keys (green), removed keys (red), and modified values (yellow). Recursive comparison through nested objects and arrays. Runs entirely in your browser.
Ctrl+Enter to run | Ctrl+K to switch tools | Recent button shows input history
Repeating this work? Turn this kind of browser utility into an API batch, MCP prompt, extension workflow, or shared team recipe.
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Does it handle nested objects?
Yes — differences are shown as dot-separated paths like user.address.city so you can pinpoint exactly where changes are.
Is it safe to paste sensitive JSON?
Yes — comparison runs entirely in your browser. Nothing is transmitted to any server.