Free Text Compare & Diff Checker
Compare two texts and see exactly what changed. Inline or side-by-side diff.
Paste text in both boxes and click Compare.
How This Text Compare Tool Works
Paste two versions of text and see exactly what changed. The tool uses a word-level diff algorithm to identify added, removed and unchanged text.
Comparison Modes
- Inline — shows both versions in a single view with additions highlighted green and removals struck through in red
- Side by Side — shows original and new text in separate panels with differences highlighted
Options
- Ignore whitespace — treats differences in spacing as non-changes
- Ignore case — treats uppercase and lowercase as the same
Stats
After comparing, you'll see how many words were added, removed and unchanged, plus an overall similarity percentage.
When to Use It
Comparing drafts of an article, checking what changed in a revised document, reviewing edits to a contract, or verifying that a rewrite preserved the original meaning.
Frequently Asked Questions
How does the comparison work?
The tool uses a word-level diff algorithm (Longest Common Subsequence) to identify which words were added, removed or kept the same.
Is my text sent anywhere?
No. The comparison runs entirely in your browser. Neither text is uploaded.
Can I compare large documents?
Yes, but very large documents (10,000+ words) may take a moment to process.