Diff Checker

Compare two blocks of text and highlight every difference. Line-by-line diff with added, removed and changed lines.

Original Text
Modified Text

What is Diff Checker?

The Diff Checker compares two texts and highlights every difference between them — added lines (green), removed lines (red), and unchanged lines. It uses a line-by-line diff algorithm similar to the Unix diff command.

How to Use This Tool

  1. Paste the original text in the left panel.
  2. Paste the modified text in the right panel.
  3. Click Compare to see highlighted differences.
  4. Added lines are green, removed lines are red.

Frequently Asked Questions