100% Client-Side · No Uploads
Merge PDF Files
Combine multiple PDFs into a single document. Drag to reorder — everything happens in your browser.
Drag & drop PDF files here
or click to browse · Select multiple PDFs
Files never leave your browserMerge Complete!
Download Merged PDFFrequently Asked Questions
Are my PDFs uploaded to a server?
No. PDFs are merged entirely in your browser using the pdf-lib library. Your files never leave your device.
Is there a file size limit?
Since processing happens in your browser, it depends on your device's memory. Most devices handle PDFs up to ~100MB total without issues.
Can I reorder the PDFs before merging?
Yes! Drag and drop files in the list to reorder them. Use the arrow buttons for precise positioning. The merged PDF follows your order.