Upload two PDF files to compare them side by side or with overlay mode.
First PDF
Click or drop
Second PDF
Click or drop
Click or drag and drop both PDF files you want to compare into the upload areas.
Select overlay mode with opacity control or side-by-side mode with synchronized scrolling.
Use flicker mode or opacity slider to easily identify differences between the two PDFs.
Both files are processed in your browser. Nothing is uploaded to any server.
Overlay with opacity control, side-by-side view, and flicker mode for easy comparison.
Compare PDFs instantly without waiting for server processing.
Compare as many PDF pairs as you need with no limits or sign-up required.
Upload both PDF files to SwiftPDFLab's Compare PDFs tool. Choose overlay mode to see differences layered together or side-by-side mode to view pages next to each other. Use the flicker button or opacity slider to spot differences quickly.
Yes! SwiftPDFLab's PDF comparison tool is completely free with no limits. Compare as many PDFs as you want, no sign-up required. Everything runs in your browser for maximum privacy.
SwiftPDFLab offers two comparison modes: Overlay mode layers both PDFs together with adjustable opacity, and Side-by-Side mode displays both PDFs next to each other with synchronized scrolling.
Absolutely! Both PDF files are processed entirely in your browser. Your documents never leave your device and are never uploaded to any server, ensuring complete privacy and security.
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