Question 1

Are files uploaded to a server?

Accepted Answer

No, merging happens entirely in the browser using the pdf-lib library. Files are never uploaded anywhere.

Question 2

How many files can I merge?

Accepted Answer

There's no hard limit, but a very large combined size may take longer to process in the browser.

Question 3

Can I change the page order?

Accepted Answer

Yes, drag the files before merging to change the order they appear in the final document.

Question 4

Are bookmarks and links preserved?

Accepted Answer

Core page content (text, images, vector graphics) is preserved; some interactive elements like form fields may render differently.

Question 5

Are password-protected PDFs supported?

Accepted Answer

No, encrypted or password-protected PDFs need to be unlocked in another app first.

PDF Merge

How to use it