Text Diff — Compare Texts
Runs locallyCompare two texts line by line with additions and deletions highlighted — a free, private, in-browser diff checker.
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Paste two versions of a text and see the differences highlighted line by line: additions in green, deletions in red, with optional case-insensitive and whitespace-trimming comparison. The diff runs locally using the Myers algorithm — nothing is uploaded.
Frequently asked questions
What does the comparison highlight?
Additions in green and deletions in red, line by line, using the same Myers algorithm as classic diff tools. Options let you ignore case and trim trailing whitespace.
Can I compare large texts?
Yes — the diff runs locally so there is no upload cap. For very large files, browser memory is the only practical limit.
Is my text uploaded?
No. Comparison happens entirely in your browser.