How to merge several PDFs into one document
Merging PDFs is useful when a submission or archive needs one file containing several documents. The order of the input files determines the order of the sections in the combined PDF. Prepare the list before generating the final copy.
Open Merge PDF ↗Step-by-step instructions
- Choose two or more unencrypted PDF files.
- Use the arrows in the file list to arrange them.
- Create and download the merged PDF.
A practical example
For a submission containing a cover letter, application and supporting document, choose all three files and use the arrows to put the cover letter first. If the files contain 1, 3 and 2 pages respectively, the expected output contains 6 pages.
Limits and common mistakes
The browser tool accepts unencrypted PDFs with a combined input size of up to 50 MB. Large documents may still be limited by available memory. Pages are copied into a new document, so document-level features such as bookmarks and digital signatures should not be assumed to survive.
Check your downloaded result
Check the page count and the boundary between every pair of source files. Confirm that no required page is missing and that the sequence matches the recipient’s instructions. Keep the source files in case a section needs to be replaced later.
Where processing happens
Your document is processed locally in your browser. Document contents are not uploaded to the PDFDesk server. Opening the website still sends ordinary connection information to the host.
Frequently asked questions
Can I choose the order of the merged files?
Yes. Move files up or down in the list before creating the result. Pages within each file keep their original order.
Is there an upload limit?
The browser tool accepts up to 50 MB total per batch. Processing also depends on available device memory. Files are not uploaded to a server.
Will bookmarks and digital signatures be preserved?
Combining PDFs copies pages into a new document. Document-level features may not survive, and existing digital signatures should not be considered valid on the new file.