MARZText Difference Checker
Compare two texts and see exactly what changed, word by word or line by line.
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About this tool
Paste an original and a revised text to see a highlighted diff of every addition and deletion, at word, character, or line granularity.
How to use
- Paste the original text into the left panel and the revised text into the right panel.
- Choose word, character, or line-level comparison.
- Review additions and deletions, highlighted inline.
FAQ
Which comparison mode should I use?
Word-level is best for prose edits, character-level for small typo-level changes, and line-level for comparing code or structured/line-based text.
Is there a size limit?
Very large documents (tens of thousands of words) may compute more slowly since diffing runs entirely in your browser, but there's no hard limit.