Text Diff Checker
Paste an original and a revised version of text to see additions, deletions, and unchanged lines highlighted side by side.
Original
Revised
+2 added · -1 removed
-The quick brown fox jumps over the lazy dog.
+The quick brown fox leaps over the lazy dog.
Second line stays the same.
+A new third line.
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Frequently asked questions
Does this compare line by line or word by word?+
Line by line, with word-level highlighting inside changed lines so you can see exactly what moved.
Can I compare code with this?+
Yes, it works on any plain text, including code, though it doesn't understand syntax the way a dedicated code diff tool would.
Is whitespace ignored?+
Not by default. Toggle "ignore whitespace" if trailing spaces or indentation differences are creating noise in the comparison.