To compare two texts, paste the original into one box and the changed version into the other, and the Text Diff tool highlights added, removed and edited lines, with word-level detail inside changed lines. Comparison runs in your browser so nothing is uploaded.
How to use the Text Diff
- Paste the original text on the left and the revised text on the right.
- Run the comparison.
- Review added, removed and changed lines, and the highlighted words inside them.
- Copy or note the changes you need.
Worked example
Comparing “The cat sat on the mat” with “The cat sat on the sofa” marks the last word changed from “mat” to “sofa” rather than flagging the whole line.
Tips and common mistakes
- Normalize spacing first with Remove Extra Spaces so whitespace noise does not show as changes.
- Compare small sections at a time for long documents.
- Use it to review edits from collaborators or check what changed between two drafts.
Frequently asked questions
Does it work for code?
Yes, it compares any plain text, line by line.
What does word-level detail mean?
Inside a changed line it highlights exactly which words differ.
Are my documents uploaded?
No. Comparison happens entirely in your browser.