Combine multiple PDFs into a single file, reorder by dragging, all processed locally in your browser with no server uploads. Completely free, unlimited, register to download.
Click or drag to upload multiple PDFs
Supports .pdf format. Select several at once or keep adding, max 50 MB per file
Uploaded files
Preview
Select a file to preview
Merging...
Merge complete
Files are processed only in your browser's memory and cleared on download or refresh
How to use
1
Upload multiple PDFs
Click to select or drag in multiple .pdf files. Choose several at once or keep adding anytime
2
Reorder
Drag the file cards or use the up/down buttons on each row. Top-to-bottom order is the final page order
3
Merge and download
Click merge—processed locally in your browser—then register to download the merged PDF
FAQ
Are PDFs uploaded to a server?
No. All merging happens entirely in your browser via pdf-lib. PDF files are never uploaded to a server, and memory is cleared on download or refresh.
How do I change the merge order?
Drag the cards in the file list, or click the up/down buttons on each row. The top-to-bottom order becomes the page order in the merged PDF.
Are encrypted PDFs supported?
PDFs that open without a password are supported. Files that require a password to open are automatically skipped with a notice, without affecting the others.
How many files can I merge at once?
Up to 20 PDFs per merge, 50 MB each. Too many or too-large files increase browser memory use—consider merging in batches.