Tools·Merge PDF
Merge PDF files in your browser.
Combine two or more PDF files into a single document. Add the files, set the order, and download. The free version has a small line of text at the bottom of each page, and you can pay $2.99 once to download the clean version.
Drop two or more PDFs here
or choose them from your computer
No files yet.
How merging works
Pdfmark loads each PDF you upload, copies every page into a new document in the order you set, and saves the result. The merging happens on Pdfmark's server using the open source pdf-lib library, so the output is a standard PDF that any reader can open.
All files are deleted automatically 24 hours after upload. The merge tool never inspects, copies, or analyses the contents of your PDFs.
Why is there a watermark on the free version?
Pdfmark is built around a flat $2.99 per finished file. The free merge tool exists so you can try the service without spending anything, and the watermark is a single small line of text at the bottom of each page so you can see exactly what you're getting. Paying $2.99 removes the watermark and opens the file in the editor, where you can also add text, signatures, dates, images, and checkmarks before downloading the clean version.
File size and limits
Each uploaded PDF can be up to 25 MB. There's no hard limit on the number of files you can merge, but very large combined outputs may time out on slow connections.