See exactly what changed
Paste an original version on the left and a changed version on the right, and the diff checker computes a line-by-line comparison using a longest-common-subsequence algorithm. Removed lines are highlighted in red, added lines in green, and unchanged lines stay neutral — so you can spot every edit at a glance without hunting through the text.
Compare on your terms
Toggle 'Ignore case' to treat capitalisation differences as identical, and 'Ignore whitespace' so indentation or trailing spaces don't create false differences. Counters tell you how many lines were added and removed. Everything runs locally in your browser, making it safe for comparing sensitive documents, contracts or code.
Features
- 01
- Line-by-line difference highlighting
- 02
- Added vs removed color coding
- 03
- Ignore case option
- 04
- Ignore whitespace option
- 05
- Added / removed counters
- 06
- Private — nothing leaves your browser
