Compare PDF – Find the Differences Between Two PDFs
Upload an original and a revised PDF and see exactly what changed: added and removed text side by side, plus a red page-image overlay.
Drop two PDFs here
Original first, then revised · stays on your device
Questions
Is the comparison private?
Yes. Both PDFs are read inside your browser and are never uploaded.
What does it compare?
The text of every line, with changed words highlighted, and the look of the first 10 pages, where differing pixels turn red.
Why does a scanned PDF show no text differences?
Scans are pictures, so there is no text to compare. Use the OCR PDF tool first, or rely on the red page-image view.