Text Tools
Text Compare
Compare two texts line by line — added and removed lines highlighted like a code diff.
About this tool
Which lines changed between two versions of a document, contract or config file? Paste both versions and get a color-coded diff: removed lines in red, added lines in green, unchanged lines dimmed — the same visual language as programming tools, applied to any text.
Comparison runs entirely in your browser, so private documents stay private.
How to use
- Paste the original text on the left.
- Paste the changed version on the right.
- Click Compare and read the highlighted differences.
Frequently asked questions
A longest-common-subsequence algorithm — the standard diff approach — matches unchanged lines and marks the rest as added or removed.
This version compares whole lines, which suits documents and code. Split long paragraphs into lines for finer granularity.
Very large texts (thousands of lines on both sides) may exceed browser memory; compare section by section if warned.