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Merge PDF Files Into One — Instantly
Process your documents securely in your browser. Files never leave your device, ensuring maximum privacy and blazing-fast performance.
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1descriptionReport_Q1.pdf
drag_indicator2descriptionAppendix.pdf
drag_indicator3descriptionCover.pdf
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4.9/5
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5M+
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Is there a file size limit?expand_more
RefineDoc is limited only by your browser's memory. We recommend merging files totaling up to 500MB for optimal performance, though many users successfully merge larger volumes.
Will the formatting of my original PDFs be affected?expand_more
No. Our tool uses lossless merging technology. Fonts, images, links, and layout elements remain exactly as they were in the original documents.
Can I reorder files after uploading?expand_more
Yes! You can drag and drop the files in the interface to set the exact sequence you want before hitting the "Merge" button.
Is it really private?expand_more
Absolutely. Unlike other tools that upload your files to their servers, RefineDoc processes everything locally. Your files never leave your computer.
Do I need an account to use this?expand_more
No account or registration is required. We believe in providing free, accessible tools for everyone.
Does it work on mobile?expand_more
Yes, RefineDoc is fully responsive and works on any modern mobile browser (iOS and Android).