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Compare two texts

See exactly what changed between two versions, line by line and side by side.

Questions

How does it decide what changed?
With the Myers diff algorithm, the same one git uses, through the BSD licensed jsdiff library.
What do the ignore options do?
Ignore case treats upper and lower case as the same.
Is there a length limit?
No, and nothing is uploaded.
Can it compare files rather than pasted text?
Not yet.