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.

Features

How to use

FAQ

• Q: Is there a file size limit?
  A: 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.
• Q: Will the formatting of my original PDFs be affected?
  A: No. Our tool uses lossless merging technology. Fonts, images, links, and layout elements remain exactly as they were in the original documents.
• Q: Can I reorder files after uploading?
  A: Yes! You can drag and drop the files in the interface to set the exact sequence you want before hitting the "Merge" button.
• Q: Is it really private?
  A: Absolutely. Unlike other tools that upload your files to their servers, RefineDoc processes everything locally. Your files never leave your computer.
• Q: Do I need an account to use this?
  A: No account or registration is required. We believe in providing free, accessible tools for everyone.
• Q: Does it work on mobile?
  A: Yes, RefineDoc is fully responsive and works on any modern mobile browser (iOS and Android).