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Compare Two PDFs
See exactly which lines of text were added or removed between two versions — free.
How PDF comparison works
- Upload the original and revised PDF.
- Click "Compare PDFs".
- Added lines show in green, removed lines in red, unchanged lines in gray.
Frequently asked questions
Does this compare visual layout, or just text?
Just text content, line by line — it won't catch a font, color, or image change if the words themselves didn't change.
Can I compare scanned PDFs?
Not directly — scanned PDFs have no text layer to compare. Run OCR on them first, then compare the OCR'd results.
Is there a size limit?
Yes — very long documents (roughly 700+ lines of text) aren't supported yet in this version. Try a shorter document or split a long one first.