JSON Diff

How this comparison works

Both inputs are parsed and re-serialized with consistent 2-space indentation, then compared line by line using a longest-common-subsequence approach — the same underlying idea behind tools like diff and Git's change view. This means it's a textual diff of the formatted JSON, not a structural one: reordering an object's keys will show as removed-and-re-added lines even though the data is equivalent, since JSON object key order isn't semantically meaningful but does change the text.

Nothing you paste here is uploaded — parsing and comparison both run locally in your browser.