Question 1

How does the text diff tool work?

Accepted Answer

Paste your original text on the left and the modified version on the right, then click Compare. The tool uses a longest common subsequence (LCS) algorithm to identify line-level and character-level differences. Changed characters within modified lines are highlighted individually so you can see exactly what was added or removed.

Question 2

What's the difference between side-by-side and unified view?

Accepted Answer

Side-by-side view shows the original and modified text in two columns with matching lines aligned horizontally. Unified view stacks all changes in a single column — removed lines appear in red directly above the added replacement in green. Both views highlight character-level changes within modified lines.

Question 3

Is my text sent to a server?

Accepted Answer

No. The entire comparison runs in your browser using JavaScript. Your text is never uploaded, stored, or sent anywhere. There are no API calls — it's fully client-side.

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