Drop two or more PDFs here, or click to browse
They're merged in the order you add them
Combine multiple PDF files into a single document. Add your files in the order you want them to appear and Swapfile stitches them together instantly.
Drop two or more PDFs here, or click to browse
They're merged in the order you add them
Drop in two or more PDFs. You can add several files at once and convert them together, which saves time when you are working through a whole folder.
The result comes back as one combined PDF in the order you add them.
Most online converters work the same way: you upload a file, it lands on somebody's server, gets written to a temporary folder, and is deleted afterwards. That is fine right up until the day you are converting an unreleased product mockup, a signed contract, or a client's bank statement — because all you get is a promise, not a fact. Merge PDF here never sends your file anywhere. The conversion runs with JavaScript inside the page you are already looking at, so the bytes never leave your device. That is why there is no upload bar, no "file too large" ceiling, and nothing left behind on a server to delete. There is no account to create and no watermark to remove. It also keeps working offline once loaded, which matters on a train or a patchy office Wi-Fi.
The combined file grows quickly if the source PDFs contain high-resolution images.
Keep the original file until you have checked the output. If the result is not what you expected, try one of the related tools below rather than converting the same file repeatedly.
These tools cover one-off jobs. If you need a converter inside your app, a pipeline that handles thousands of files, or a team set up with the right tooling, that is a build job — and we do those.