Does it use a real diff algorithm?

Yes. Longest Common Subsequence (LCS) based on Myers' algorithm. Results match what git diff or diff -u would produce line-by-line.

Can I compare code with different indentation?

Enable "ignore whitespace" to normalize spacing and tabs before comparing.

Practical limit is a few thousand lines per side. Beyond that the LCS matrix gets expensive.

Yes. Toggle "ignore case" to compare texts case-insensitively without mutating the output.

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Does it use a real diff algorithm?: Yes. Longest Common Subsequence (LCS) based on Myers' algorithm. Results match what git diff or diff -u would produce line-by-line.
Can I compare code with different indentation?: Enable "ignore whitespace" to normalize spacing and tabs before comparing.
Is there a size limit?: Practical limit is a few thousand lines per side. Beyond that the LCS matrix gets expensive.
Can I ignore case?: Yes. Toggle "ignore case" to compare texts case-insensitively without mutating the output.