Combine multiple PDFs into one document. Drag to reorder. No upload, 100% private - your files never leave your device.
or click to browse · multiple PDFs accepted · no size limit · files stay on your device
Click the upload area or drag & drop multiple PDF files. See your files listed instantly - all processing stays on your device.
Drag files up or down to reorder. The first file will appear first in the merged PDF. No data leaves your computer.
Click the big green "Merge PDFs & Download" button and your combined PDF downloads instantly! Your files are never uploaded.
Everything you need to know about merging PDFs with privacy.
This usually happens with password-protected or corrupted PDFs. Make sure your PDFs aren't password protected. Also check that all files are valid PDFs - we show clear error messages if a file can't be processed.
Yes! Simply drag any file up or down to reorder. The merge order updates automatically with new position numbers. You can also remove individual files by clicking the red X on any file.
Absolutely not. Your files never leave your device. All processing is done locally in your browser. The moment you close the tab, everything is gone forever. We literally cannot access your files - this is the core of our privacy promise.
No file size limit! The only limitation is your browser's memory (typically 1-2GB). You can merge PDFs of any size, even 500MB+ files, as long as your computer can handle them. Since nothing is uploaded, size doesn't affect our servers.
Absolutely! Our tool works perfectly on iPhone, Android, iPad, and tablets. The interface adapts to your screen size and touch controls work great for dragging files. All processing stays on your device.
Merge speed depends on file sizes and your device. Small PDFs merge in 1-2 seconds. Large files (100MB+) might take 10-15 seconds. All processing is done locally, so speed depends on your device's performance - not our servers.
Currently, we don't support password-protected PDFs for security reasons. You'll need to remove password protection first using another tool. We're working on adding secure password input in a future update - with passwords never leaving your device.
There's no hard limit! You can merge as many PDFs as you want. However, performance may slow down with 20+ large files due to browser memory limitations. For best results, merge in batches of 10-15 files at a time.
The merge button stays disabled until all files finish processing. If it stays disabled, check if any files failed to load (they'll show in red). Remove problematic files and try again.
We removed thumbnails to make the tool faster and more reliable. File names are all you need to identify and reorder your PDFs before merging! This also keeps your data completely private.
Yes, 100% free forever. No hidden costs, no premium tiers, no signup required. We believe PDF tools should be accessible to everyone while respecting privacy.