Developer Tools
Text Diff Checker
Compare two pieces of text and see added and removed lines highlighted. Free online text diff checker.
Input
Result
Differences will appear here.
How to Use
- Paste the original text into the first box.
- Paste the changed text into the second box.
- Added lines are highlighted in green, removed lines in red.
How the Comparison Works
This tool compares text line by line using a sequence-matching algorithm (similar to the Unix diff command) that finds the longest matching blocks between the two versions, then reports everything else as inserted or deleted. Lines that are identical in both texts are shown without highlighting.
Common Uses
- Reviewing what changed between two drafts of an article or document.
- Comparing two versions of a configuration file or code snippet.
- Spotting subtle differences between two blocks of text that look almost identical.
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