Contracts
Compare a returned contract against your original to catch quiet edits.
Text Diff Checker
Paste two versions of a document, contract clause, article or code snippet and see exactly what changed. Removed text is shown in red, added text in green, with changed words highlighted.
- 100% free
- No sign-up
- Runs in your browser
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Removed0
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How to use
How to use the Text Diff Checker
- Paste the original text on the left.
- Paste the changed version on the right.
- Choose to compare by lines or words, and whether to ignore case or spacing.
- Review the highlighted differences.
Private by design. Your text is processed in your browser. Nothing you type or paste is sent to a server or stored.
About this tool
How text comparison works
The checker finds the longest sequence of lines that both versions share, then marks everything else as added or removed. When a line was edited rather than replaced, the exact words that changed are highlighted inside it, so small edits are easy to spot.
Comparing by words is better for prose, such as essays or contract clauses, where a single sentence may wrap differently. Ignoring whitespace helps with code or text that has been reformatted without real changes.
Good to know
Comparison tips
Content updates
Check what changed between two versions of a web page.
Code
Ignore whitespace to skip indentation-only changes.
Large files
For very long documents, compare one section at a time.
FAQ
Text Diff Checker FAQs
Is my text uploaded?
No. The comparison runs in your browser, so confidential documents stay private.
What do the colours mean?
Red lines were removed, green lines were added, and stronger highlights show the exact words changed.
Can I compare code?
Yes. Line mode with Ignore whitespace works well for code.
Is there a size limit?
Very long texts that are almost entirely different may be too large to compare in the browser. Splitting them into sections helps.
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