Compare Two Texts
Paste two versions of anything to see exactly what changed: new lines in green, removed lines in red, and the edited words inside each changed line picked out. It all runs in your browser.
Compared on your device. Your text is never uploaded.
Comparing two versions of a text
The moment you paste both versions, they're compared using the Myers diff algorithm – the same one Git relies on. New lines show in green and removed lines in red, and where a line was edited rather than replaced, the exact words that changed are marked within it, so a different date or a missing comma jumps out. Flip between side-by-side and a compact unified view, ignore case or whitespace differences, and collapse long unchanged stretches to focus on what matters. It's handy for contracts, essays, code, config files and CSV data. Both texts stay in your browser tab and nothing is uploaded or stored, so confidential drafts and private code are safe.
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Paste the original into the left box and the new version into the right box.
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Additions, deletions and edited lines light up instantly, with changed words marked inside each line.
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Switch between side-by-side and unified views, or ignore case and whitespace.
What makes this Text Diff Checker handy
Word-level detail
Edited lines show exactly which words changed, not just that the line is different.
Two layouts
Side by side for reading, unified for a compact, Git-style summary.
Useful options
Ignore case or whitespace, and fold unchanged sections automatically.
Private by design
Both texts stay in your browser and are never uploaded.
What people use the Text Diff Checker for
Compare contract drafts
See exactly what changed between two versions of an agreement.
Review code and config edits
Diff snippets, JSON and config files without Git.
Check edits to writing
Catch every change an editor or co-author made.
Spot differences in lists
Compare two lists of emails, IDs or CSV rows line by line.
Also searched for as: diff checker, text compare tool, compare two texts, difference finder, document comparison and online diff.
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Private text tools that run in your browser
Count words, work out reading time, compare two drafts and pull text from images – all on your own device. Nothing you paste or drop is uploaded or stored, so they're fine for unpublished articles, contracts and confidential notes.
Questions & answers
How are the differences found?
The texts are compared line by line with the Myers diff algorithm (as used by Git) to find the smallest set of changes, then edited lines are compared word by word to show exactly what changed.
Can I compare confidential documents safely?
Yes. The comparison runs entirely in your browser – neither text is uploaded, stored or logged – so contracts, private code and drafts stay on your device.