Compare Two Texts
Paste two versions of a text and instantly see what was added, removed or changed, highlighted word by word.
Added · Removed · unhighlighted text is identical in both versions.
What does comparing two texts mean?
Comparing two texts means setting two versions of the same content side by side to identify which parts match and which have changed. The result shows the differences highlighted in color.
A text comparison tool automates that work: instead of rereading both documents line by line, you paste the two versions and instantly get the added and removed text.
The whole comparison happens in your browser, with nothing sent to a server. It is the fastest, safest way to compare texts before reviewing any text document.
Why compare texts?
Comparing texts is useful for reviewing, editing and tracking changes. These are the most frequent use cases.
Proofreading and editing
Compare the draft and the corrected version of a text to see exactly what the editor changed, without rereading it all.
Version control
Comparing two texts lets you track how a document evolves between revisions and confirm that only the intended parts changed.
Spot changes and plagiarism
When you compare texts you can locate copied passages, reused sentences or unauthorized changes in a document.
To trim a text after reviewing, try the text summarizer or read our blog post length guide.
How to compare two texts step by step
Paste the two texts
Place the original text on the left and the modified version on the right.
Choose the options
Decide whether to compare by word or by line and whether to ignore case and whitespace.
Review the differences
The result highlights additions in green and deletions in red, with a summary.
How to read the comparison result
Added text
Text highlighted in green appears only in the modified text: these are the new words or lines compared to the original. Review them to confirm the additions are intentional.
Removed text
Text highlighted in red and struck through was in the original but no longer appears in the modified version. This shows at a glance what was deleted when you compare the texts.
Comparing by word or by line
The by-word mode is ideal for reviewing prose, since it marks every changed term. The by-line mode suits lists and code, where you want to see the whole modified line.
Tips to compare texts accurately
If you only care about the content and not the formatting, enable "Ignore case" and "Ignore whitespace": that way the tool does not flag a simple capitalization change or an extra space as a difference.
When a text has been heavily reordered, compare it by line first to locate the changed blocks, then by word for the fine detail. To review repetition, combine the comparison with the repeated words finder.