Merge PDF
Combine two or more PDF files into a single document, instantly.
No files selected
Combine two or more PDFs into a single document in seconds. Everything runs locally in your browser — your files are never uploaded anywhere.
Combine two or more PDF files into a single document, instantly.
No files selected
Most free PDF mergers work by uploading your files to a remote server, joining them there, and sending the result back down to you. That round trip means your documents — which might be contracts, invoices, tax forms, or scanned IDs — sit on someone else's disk, even if only briefly. AI PDF Bundles' Merge tool takes a different approach: it loads your PDFs directly into your browser's memory using the File API and stitches the pages together with the open-source pdf-lib library, all on your own device. Nothing ever leaves your computer.
This matters most when the documents you're combining contain anything sensitive. A merged PDF might include a signed lease next to a pay stub, or medical records next to an insurance form — exactly the kind of file you don't want passing through a third-party server, even one with a good privacy policy. Because the merge happens client-side, there's no upload step to wait on either, so joining a handful of PDFs is essentially instant once you've selected the files.
To use it, just select two or more PDF files above, in the order you want them to appear, and press Merge & Download. The combined file downloads straight to your device with no account, watermark, or page-count restriction.
No installs, no accounts, and no waiting on server queues. Everything happens locally on your device.
Choose two or more PDF files from your device, in the order you want them combined.
pdf-lib copies every page from each file into one new document, locally, without contacting a server.
Your combined PDF downloads automatically as soon as processing finishes.
There's no hard-coded limit on the number of files. Since everything is processed in your browser's memory, very large batches of large PDFs may take longer or use more RAM depending on your device, but for typical documents (a handful of files, a few hundred pages total) it runs smoothly on any modern computer or phone.
No. The Merge tool copies the original pages exactly as they are — text stays selectable, images stay full quality, and nothing is re-rendered or compressed. It simply places the pages from each file, in order, into one new document.
The Merge tool combines files in the order you selected them. If you need to reorder or remove individual pages afterward, run the merged file through the Split or Delete Pages tool to build exactly the page order you need.
No. Merge PDF works entirely in your web browser — no software install, no browser extension, and no sign-up. Just open the page, choose your files, and download the result.
Processing...