Question 1

Do you upload my PDFs to a server?

Accepted Answer

No. Merging runs entirely in your browser using pdf-lib. Your files never leave your device.

Question 2

Is there a limit to how many PDFs I can merge?

Accepted Answer

No fixed limit, but for a responsive browser we recommend keeping the total combined size under about 200 MB.

Question 3

Can I reorder the PDFs before merging?

Accepted Answer

Yes. Move files up or down using the Move Up / Move Down buttons. The final PDF follows the order shown.

Question 4

Does merging preserve bookmarks or form fields?

Accepted Answer

Page content, images, and rotation are preserved. Bookmarks and interactive form fields are stripped in this browser-only workflow — a desktop editor is a better fit if you need them.

Question 5

What about password-protected PDFs?

Accepted Answer

Encrypted PDFs cannot be read in the browser. Remove the password using a desktop tool first, then come back to merge.

Free PDF Merger

Frequently Asked Questions

Split PDF

Rotate PDF

Compress PDF

Extract Pages