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Compare two texts line by line. Spot additions and deletions instantly — free and private.
Put original text on the left and the modified version on the right.
We compute a line-level LCS diff in your browser.
Green lines were added, red lines removed, grey lines unchanged.
Instant feedback for configs, copy, and code snippets.
Texts never leave your device.
See counts of added, removed, and unchanged lines.
Optionally collapse repeated spaces before comparing.
Quick answers about tools, privacy, limits, and pricing.
Yes. Daily compare limits may apply by account tier.
No. Diffing runs entirely in your browser.
It is line-based (like a simplified unified diff). Entire lines are marked added or removed when they differ.
Very large comparisons can freeze the tab; we cap extreme sizes for safety.
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