Merge PDF files
Combine several PDFs into a single document, in the order you choose.
Runs on your device — never uploaded
Drop files here or click to browse
Accepts .pdf. Nothing is uploaded.
How to merge PDF files
- Add your PDFs
Drop two or more PDF files onto the tool or click to browse. You can add up to any number of files.
- Arrange the order
Drag files up or down to set the page order of the combined document. Remove any you added by mistake.
- Merge and download
Click Merge. The combined PDF is assembled on your device and a preview appears before you download it.
Frequently asked questions
Are my PDFs uploaded to a server?
No. Merging happens inside your browser using WebAssembly. Nothing is sent over the network, which you can verify in your browser's network inspector.
Is there a file size or page limit?
There is no artificial limit. Very large files are limited only by your device's memory; hundreds of pages merge in a second or two on a modern laptop.
Will bookmarks and form fields be kept?
Pages, text, images and vector graphics are preserved exactly. Interactive form fields are flattened into static content in the merged output.