Text Diff

Compare two texts and see line differences

What is Text Diff?

Compare two versions of text line by line. Removed lines show with minus, added lines with plus.

How to Use

  1. Paste original text in the first box.
  2. Paste modified text in the second box.
  3. Review highlighted differences below.

Frequently Asked Questions

Is this a word-level diff?

This tool compares line by line, not word by word within a line.

Related Tools

See Clean Whitespace and Word Counter.

How It Works

Uses LCS (longest common subsequence) dynamic programming on lines — correctly aligns insertions/deletions when lines move. Optional ignore case / trim per line. Shows +/− stats; can hide unchanged lines.