Text

Diff Checker

Compare texts and JSON: by line, word or character, side by side or inline, with unified diff export.

Original

Size: 0 BLines: 0

Size: 0 BLines: 0

Enter both texts to see the differences.

Paste the source text on the left (“Original”) and the changed text on the right (“Modified”), or upload files.
Pick a mode: text (by line, word or character) or JSON (as text or structural).
Switch between side-by-side and inline views and jump between differences with the previous/next buttons.
Toggle ignore case, ignore whitespace, line wrapping and line numbers.
Copy the unified diff or download it as a .diff file; each source text can also be downloaded separately.

The limit is 2 MiB per text. Stale computations are cancelled and heavy comparisons are time-limited.
Structural JSON comparison ignores key order but respects array order, value types and the difference between null and a missing key.
Unified .diff is available for text and for JSON “as text”: structural comparison normalizes the documents, so such a patch could not be applied to the original files. The patch contains every difference; the ignore case and whitespace options do not affect it.