How to Use Text Compare
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1. Paste Two Texts
Paste the original text in the left panel and the revised text in the right panel.
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2. View the Diff
The tool highlights additions in green, deletions in red, and unchanged lines in neutral color.
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3. Review the Changes
Scroll through the highlighted diff to see exactly what changed between the two versions.
The Technical Details
This interactive web utility provides fast, reliable, and completely private data transformations. In modern workflows, quick formatting, conversions, or estimations are essential. By running all logic entirely in your browser with client-side JavaScript, this tool guarantees that your data never leaves your machine. This approach delivers maximum performance and absolute data privacy, as no information is ever sent to a server.
Frequently Asked Questions
Does the tool diff by line or by word?
The tool performs a line-level diff with word-level highlighting within changed lines for precision.
Is whitespace-only changes detected?
Yes. Whitespace differences are highlighted, but you can toggle a setting to ignore leading and trailing whitespace.
Is any data sent to a server?
No. All diffing runs in your browser; neither text is ever uploaded.
Can it handle large texts?
Yes. The diff algorithm is optimized for browser use and handles large documents efficiently.