Merge PDF
Combine multiple PDF documents into a single file.
Files are processed in your browser and are not sent to or saved on our servers. Visiting or processing downloads the site's software resources.
Use your own or authorized documents. Encrypted PDFs and some formats or structures are unsupported. Editing invalidates digital signatures. Forms, bookmarks, tags and metadata may not be preserved. Results are not sanitized and may retain active content from the original.
Up to 5 MiB per file, 10 MiB in total and 50 pages. Merge: 2–5 PDFs. Other PDF operations: one file. Images: 1–5, up to 8 MP and 4096 px per side.
Ready to select files
What this tool does
Combine pages from several PDFs into one document in your chosen file order. This does not convert content or compress documents.
How to use it
- Select two to five PDFs from your device.
- Use Move up and Move down to set the file order before processing.
- Download and open the result to check page count and orientation.
Verifiable example
- Input
- Document A contains A1 and A2; document B contains B1. Order: A–B.
- Expected result
- One PDF containing A1, A2, B1.
Limitations to review
- Up to 5 MiB per file, 10 MiB combined and 50 pages in total. Encrypted files and over-budget inputs are rejected.
- Signatures, forms, bookmarks and internal links are not guaranteed to survive. Merging does not sanitize a PDF.
Related tools
Browse all guides. Local processing: the page downloads HTTP resources but does not send files or input data to a server for these functions.