About this tool
Compare original and revised text by aligning matching lines. The report uses symbols and words for unchanged, removed and added lines. This is a line-level diff, not a word-level diff. Comparison runs in a background worker after you select Compare Text.
How to use Text Compare
- Paste the original into Your text and the new version into Revised text.
- Select Compare Text to align lines and find additions and removals.
- Read the labelled comparison or download its text report.
Frequently asked questions
How are changes marked?
Each report line starts with = Unchanged, - Removed or + Added, followed by the line number and text.
Does this align inserted lines?
Yes. Matching lines are aligned, so an insertion does not mark later unchanged lines as changed. Removed and unchanged lines use original line numbers; added lines use revised line numbers.
Can I compare an empty version?
Yes, one side may be empty. Both sides empty produces a request to enter text.