99digest is in early access — tools are free while we grow.

Merge PDF

Combine two or more PDFs into a single file, in the order you choose — entirely in your browser, your files are never uploaded anywhere.

Runs in your browser Private & secure Updated August 10, 2026

Combine two or more PDFs into a single file, in the order you choose. Select your PDFs below — they’re processed entirely in your browser and never uploaded anywhere.

Runs in your browser

How it works

Each PDF is read and its pages copied into one new document, in the order you selected the files. The merge happens using pdf-lib, an open-source PDF library that runs entirely in your browser — your files never leave your device.

FAQs

Are my PDFs uploaded anywhere?

No. The merge happens entirely in your browser using JavaScript. Your files are never sent to a server.

Can I merge password-protected PDFs?

Not currently — encrypted or password-protected PDFs can’t be read client-side without the password, so they’ll show a “couldn’t be read” error. Remove the password first using your PDF viewer, then merge.