Drop both PDFs here
or click to browse — drop the two files together and they fill both slots
Original
The version you started from
Revised
The version to check against it
Real differences only
Text is aligned line by line first, so one added paragraph does not report the rest of the document as rewritten.
Text or pixels
Compare the words, or compare the pages as they look — the only mode that works on scans and drawings.
Nothing uploaded
Comparing means handing over both versions at once. Every other tool asks for exactly that; this one never does.