HOT
Case Converter
text
Text Diff
Paste two versions of a text and see exactly which lines were added and removed, highlighted like a code review. Contracts, essays, configs - compared privately in your browser. No sign-up, free.
Original
Changed
0 words · 0 characters · 0 lines
Output
0 added · 0 removed
Runs 100% in your browser No length or usage limits Free, no sign-up
How to compare two texts
Paste the original
The first pane takes the older version of your text.
Paste the changed version
The second pane takes the newer one. The diff renders instantly.
Read the diff
Green lines were added, red struck-through lines were removed, gray lines are unchanged - with a summary count above.
Text comparison questions, answered
Is my text sent to a server?
No. Both versions are compared locally in your browser - which matters, because the things people diff are contracts, agreements and unreleased copy.
How does the comparison work?
Line by line, using the same longest-common-subsequence approach as programming diff tools - so a moved paragraph shows as a removal plus an addition.
Can I compare code?
Yes. The panes preserve whitespace and use a monospaced font, so indentation-sensitive code diffs read correctly.
Is there a length limit?
Documents up to a few thousand lines compare instantly. Beyond that the tool falls back to marking whole changed blocks rather than hanging.