Merge PDFs
Combine multiple PDFs into one document.
Drag & drop PDF files here, or click to select
All pages will be selected by default, you can customize selection below.
A practical guide to Merge PDFs
Merge PDF keeps every source page in the order you choose and writes one combined document. It is useful for assembling reports, application packets, or scanned sections without flattening the pages into images.
Example: assemble a monthly reporting pack
Add the cover sheet, financial appendix, and signed approval in that order; check the page thumbnails, then export one PDF for distribution.
Task-specific steps
- 1
Add two or more PDF files and inspect each file name before continuing.
- 2
Move the files into the exact order their pages should appear in the combined document.
- 3
Create the merged PDF, open the result, and confirm the first and last page of each source section.
Options that affect the result
- File order controls the order of every page in the result.
- The combined file preserves source page sizes, so mixed A4 and Letter pages can remain mixed.
Limitations to know first
- Bookmarks, forms, signatures, and document-level metadata may not survive every merge unchanged.
- Merging does not reduce image resolution or make scanned text searchable.
Questions specific to this task
Can I merge PDFs with different page sizes?
Yes. Each page keeps its own media size, so the finished document may contain a mixture of portrait, landscape, A4, Letter, or custom pages.
Why is a digital signature invalid after merging?
A digital signature protects a specific byte sequence. Building a new combined PDF changes that sequence, so signed documents should normally be merged before the final signing step.