Protect PDF with a password
Lock a PDF with a password so only people you tell can open it.
Loading...
What is Protect PDF?
Protect PDF is a free online tool that locks a PDF with a password using AES-256 encryption. Anyone who opens the protected file must type the password first, in any PDF reader. It is a simple way to keep marks sheets, personal documents and answer keys away from the wrong people.
How to use Protect PDF
- 1Select or drop one PDF file.
- 2Type a password twice.
- 3Click Protect PDF and the locked file downloads.
Protect PDF questions
How strong is the protection?
The PDF is encrypted with AES-256, the strongest standard encryption PDF readers support.
What if I forget the password?
It cannot be recovered, so keep it somewhere safe and keep an unlocked copy of important files.
More PDF tools
Merge PDF
Join several PDFs into one file, in the order you choose.
Split PDF
Take out the pages you need, or save every page as its own PDF.
Organize PDF
Reorder, rotate and delete pages, or add pages from another PDF.
Images to PDF
Turn photos of your notes or JPG and PNG images into one PDF.
Edit PDF
Add text, signatures, images and highlights to a PDF.
Compress PDF
Make a PDF smaller so it fits upload and email limits.
Word to PDF
Convert Word documents (.docx) into PDF files.
Rotate PDF
Turn sideways or upside-down pages the right way up.
Page numbers
Add page numbers to a PDF, in the position and style you like.
Add watermark
Stamp text like DRAFT or CONFIDENTIAL across every page.
PDF to JPG
Save every page of a PDF as a JPG image.
Unlock PDF
Remove the password and printing or copying limits from a PDF.