Diff Checker — Compare Two Texts Online

Compare two texts and highlight the differences line by line. Free online text comparison tool.

What is a Diff Checker?

A diff checker compares two pieces of text and highlights the differences between them. Lines that exist only in the original are marked as removed (red), and lines only in the modified text are marked as added (green).

Common uses

Comparing code versions, checking document revisions, verifying configuration changes, and finding differences between API responses.