Text diff

Paste two versions of a file, a config or any text. Added and removed lines are marked with their line numbers.

Before After

How it works

Line by lineIt finds the longest run of lines the two texts share, then marks everything else as added or removed.
WhitespaceTurn on Ignore whitespace to skip changes that are only indentation or spacing.

How long can the texts be?

A few thousand lines each works well. Much longer files are better compared with git diff.

Is my text uploaded?

No. The comparison runs in your browser.

Show it in the server, get a code review, or ask the people who use these tools every day.