Text Compare
Compare two texts and highlight added or removed lines.
About this tool
Text Compare finds the differences between two versions of a text line by line. Removed lines are shown in red with strikethrough, added lines in green, so you can review edits to articles, code, contracts or lists at a glance.
The comparison uses a longest-common-subsequence algorithm — the same approach used by developer diff tools like Git — so it identifies the minimal set of changes rather than flagging everything after the first difference.
Frequently asked questions
Completely. Both texts are compared locally in your browser and never leave your device.
The current version compares line by line, which is ideal for lists, code and structured documents. A changed line shows as one removal plus one addition.
Yes, documents with thousands of lines compare in well under a second on a typical computer.