Text tools
Text diff
Compare two texts line by line and download a plain unified diff.
Processed locally
Up to 1,000,000 characters and 2,000 lines per side. Line endings normalize to LF; the final newline remains significant. Output is plain text.
Your answer will appear here.
Help and method
A bounded longest-common-subsequence comparison finds line additions and removals. The unified diff contains one complete-file section; minus removes and plus adds.
Methods and reliabilityWorked example
An example you can try or adapt to your own values.
- Original text
- α β
- Changed text
- α γ
Result
--- before +++ after @@ -1,2 +1,2 @@ α -β +γ