Run a comparison to see side-by-side changes with inline character highlights.
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Paste an original and a revised version to see added, removed, and changed lines — with inline character highlights for precise edits.
Use it when reviewing contract redlines, config changes, or any two versions of text without installing desktop diff software.
Run a comparison to see side-by-side changes with inline character highlights.
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Learn how to spot differences between two versions of a text, document, or code snippet — instantly, in your browser, with no tools to install.
Read article →Paste your original text in the left box and the modified version in the right box, then click Compare. Added lines appear in green, removed lines in red, and unchanged lines in gray.
When enabled, differences caused only by extra spaces, tabs, or line endings are not counted as changes.
When enabled, uppercase and lowercase differences are ignored — "Hello" and "hello" are treated as identical.
No. The comparison runs entirely in your browser. Your text never leaves your device.
Yes. The tool works for any plain text including code, JSON, CSV, or prose.