Mixed page sizes stay unchanged.
Merge PDF files
Combine multiple PDFs into one document. Reorder files or individual pages before download.
Processed locallyNo accountOriginal unchanged
- Add
- Organize
- Merge
Add at least two PDFs
Drop files here or choose them from your device
Your files stay on this device.
How it works
- 1
Choose two or more PDFs from your device.
- 2
Arrange whole documents or edit individual pages.
- 3
Merge, validate, and download one new PDF.
Private by design
Every source is read and copied in this browser. The application never uploads PDF bytes, names, thumbnails, or results.
Your PDF files are read, previewed, edited, and rebuilt on this device. The server delivers the application, not your documents.
Specific limits
A workspace accepts up to 25 documents and 1,500 pages within the adaptive memory limit. Signatures and interactive features may change when a new PDF is created.
Duplicate source files are allowed.
The exact visible order becomes the output order.
Plan a reliable merge
Before combining files, decide what the finished document should feel like to a reader. Put a cover or introduction first, keep chapters together, and place appendices after the material they support. Document view is fastest when complete PDFs already have the right internal order. Page view is better when you must move a cover, remove an accidental scan, rotate one sheet, or interleave pages from different sources. The workspace shows the sequence that will be exported, so reviewing the first page, section boundaries, and final page is an efficient last check.
Merging copies existing PDF pages into a newly constructed document; it does not flatten ordinary text and graphics into images. That preserves page dimensions and visual quality, including mixtures of portrait, landscape, A4, Letter, and unusual scan sizes. A rebuilt file can nevertheless lose document-level behavior such as signatures, bookmarks, attachments, form logic, tagged-reading order, or internal links. Keep the originals, download the merged result under a useful name, and open it once to confirm navigation and any business-critical interactive features before sharing it.
Frequently asked questions
Are my files uploaded?
No. The site supplies the application; document processing stays on this device.
Can I merge differently sized pages?
Yes. Each copied page keeps its original dimensions and intrinsic rotation.
Can I edit individual pages?
Yes. Switch from document order to the page grid to move, rotate, duplicate, or remove pages.
Will signatures remain valid?
A merged file is a new document, so existing digital signatures may become invalid.