Merge PDF files into one document

Add two or more PDFs, put them in the order you want and download one combined file. Pages are copied as they are – page sizes, orientation, links within each page and embedded fonts are preserved.

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How to use Merge PDF

Add your PDFs with the picker or drag-and-drop.
Reorder files using the up/down buttons; remove any you do not need.
Select Merge PDFs.
Download merged.pdf.

Supported formats

Input: PDF (2 or more)
Output: PDF

What is kept

Page content, sizes and rotation are copied byte-for-byte where possible. Document-level features such as bookmarks and form fields from the source files are not merged.

Protected files

Password-protected PDFs must be unlocked first (if you have the password) using Unlock PDF.

Limitations

Bookmarks/outlines and interactive form fields from source files are not preserved.
Encrypted files must be unlocked first.

Privacy

Files you choose are read into your browser’s memory and processed on your device; they are not uploaded to a server. Temporary download links are released after use, and the offline cache never stores your documents. More about privacy and limits.

Frequently asked questions

Is there a file limit?

Only your device memory. Each file may be up to 150 MB; merging dozens of large files on a phone may be slow.

Will bookmarks survive?

No. Outlines are not carried over by the merge engine.