Add a password to protect access to your PDF file in just a few clicks. It's easy and free. Start by selecting or dragging-and-dropping the file directly on our website.
All files processed on our website are kept private. We do not resell or share any of your personal data.
1pdf is compatible with your computer (linux, macOS, Windows...) and your smartphone or tablet (iOS, Android...).
Our 1pdf service provides an upgradeable and high-performing platform to ensure our tools and your PDF files are readily available.
1pdf is a free online service offering unlimited use. Merge, divide, compress, convert, encrypt, or rotate your PDF files in just a few clicks.
To start using this tool, first select the PDF file you would like to protect with a password, on your computer, smartphone, or tablet.
Once you've uploaded your PDF file, enter a password and confirm it by entering the same password again. Then click submit to encrypt your file.
Voilà! Download or share your encrypted PDF file(s) on your computer or smartphone and start again whenever you'd like.
With 1pdf, control access to your PDF file using a symmetric encryption algorithm (AES-128 bits) and by adding a password that you only will know. We will not store the password you enter so it is important you write it down or memorize it because it will not be retrievable.
With 1pdf, control access to your PDF file using a symmetric encryption algorithm (AES-128 bits) and by adding a password that you only will know. We will not store the password you enter so it is important you write it down or memorize it because it will not be retrievable.