Text diff
Compare two texts line by line.

Details
Paste two texts and see which lines were added or removed. Each side stops at 400 lines. A change inside a line is shown as a whole new line, not as a character-by-character mark.

Category: Everyday
Page: /tools/text-diff
Text: /tools/text-diff.txt

Limits
Each side is capped at 400 lines. It is a line diff, not a character diff inside a line.

Steps
1. Paste the original and the revision.
2. Read removed and added lines.
3. Copy is manual. The tool does not merge files on disk.

Questions
Why did a long file get cut?
The cap keeps the comparison responsive.

Does order matter?
Yes. The left side is the original.

Nothing is uploaded. Closing the tab drops the file.
Both texts stay in the page.