Text Tools

Text Difference Checker

Compare two passages line by line and label additions, removals and unchanged lines.

Free to use No account needed Quick result

Tool workspace

Private by design

Your result

Your result will appear here…

About the Text Difference Checker

The Text Difference Checker uses a longest-common-subsequence comparison to create an understandable line-level change list. It is suited to copy revisions, configuration snapshots and small document comparisons.

How to use the Text Difference Checker

  1. Place the older version in Original.
  2. Place the new version in Revised.
  3. Compare and inspect plus, minus and unchanged markers.

Practical tips

  • Keep meaningful sentences on separate lines for a more focused result.
  • For source code, format both versions consistently before comparing.
Helpful answers

Text Difference Checker FAQs