About the Merge PDF tool
Need to send one tidy document instead of five attachments? This merger stitches your PDFs together in the order you choose. Because the work happens inside your browser, your files are never uploaded to a server — handy for contracts, tax forms and anything private.
How to use it
- Drop in two or more PDF files (or click to choose them).
- Use the arrows to put the files in the order you want.
- Click Merge PDFs — your combined file downloads instantly.
Frequently asked questions
Is there a file size or page limit?
There is no hard limit. Very large files depend on your device’s memory, but typical documents of a few hundred pages merge in seconds.
Are my PDFs uploaded?
No. Merging happens locally with JavaScript, so your documents never leave your computer or phone.
Can I merge password-protected PDFs?
Encrypted PDFs usually need their password removed first, otherwise pages may come out blank.