Diff / Text Compare

Free Online Text Diff Checker

Compare two blocks of text side by side and see exactly what changed. Our diff tool highlights additions, deletions, and unchanged lines with color-coded output — just like a code review.

How It Works

Paste your original text on the left and the modified version on the right, then click Compare. The tool uses a line-by-line diff algorithm to identify changes with precision. Green lines are additions, red lines are deletions, and grey lines are unchanged context.

100% Private

All comparison is done in your browser. Your text is never sent to any server or stored anywhere.