Text diff
Compare two blocks of text, line by line and word by word.
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How does it decide what counts as changed?
It lines up the two texts to find the longest stretch that's actually unchanged, the same approach git and most code editors use, so a block moved further down still reads as one clean addition instead of a wall of noise.
Does it show what changed inside a line, not just the whole line?
Yes, when a line is edited rather than added or removed outright, the specific words that differ are highlighted within it, so a single changed word or punctuation mark stands out.
Can it ignore whitespace or capitalization differences?
Yes, both are toggles above the result. Ignore whitespace treats lines that only differ in leading or trailing spaces as the same, ignore case does the same for capitalization.
Does this upload my files anywhere?
No. Everything runs in your browser. Files never leave your device, there's no server to send them to, and no account or log.