Text toolsUpdated July 2026
Free Text Compare / Diff Checker
Compare two blocks of text and see exactly which lines were added, removed, or changed.
Free online tool
No signup
Copy-ready result
Browser-first privacy
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Text A
Text B
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How to compare two texts
- Paste the original text into Text A.
- Paste the changed text into Text B.
- Review the line-by-line differences, with added and removed lines highlighted.
How the comparison works
Both texts are split into lines and compared using a difference algorithm, similar to the way source-code diff tools work, so only genuinely changed lines are highlighted rather than reflowing the whole text.
Common use cases
- Check what changed between two drafts of a document
- Compare two versions of code or configuration text
- Spot small differences between two blocks of text quickly
Frequently asked questions
Is this tool free?
Yes. It is completely free, with no signup and no limits.
Is my text uploaded anywhere?
No. Both texts are compared entirely in your browser.
Can I ignore case or extra whitespace?
Yes. Both options are available and update the comparison instantly.
Does this compare word-by-word or line-by-line?
Line-by-line, which is the clearest way to see structural changes across paragraphs, lists, or code.
Is there a size limit?
Very large texts (rare in normal use) may be skipped with a clear message to keep comparisons fast and reliable.