Requirements used
- Line diff
- Private
Everything runs in your browser. Your files are never uploaded.
Frequently asked questions
How does the comparison work?
It finds the longest common run of identical lines, then marks everything else as removed (left only) or added (right only).
Does it compare words or characters?
No, it compares whole lines. A single changed character shows the line as one removal and one addition.
Is there a size limit?
Inputs over 3,000 lines each are refused to keep the page responsive. Split larger files first.
Is my text uploaded?
Runs entirely in your browser; nothing you paste is sent anywhere.