Pdf passwort
Encrypt and protect PDF with a password to safeguard sensitive information. Secure your PDF files online, with ease and without registration.Password Protect PDF
Reliable PDF Password Protection
Prevent unauthorized access to your file’s contents through encrypted password protection. The best method for sharing sensitive information with others securely.
No Data Retention
Smallpdf doesn't save any document passwords and files are permanently deleted after one hour. All data transfers are handled through TLS encryption to ensure the safety of your data.
On Mac, Windows, and Linux
As a web application, Smallpdf can be accessed using a Mac, Windows, or Linux machine, or even a mobile device. Just open your browser to add a document open password to your PDF!
Secure Encryption for Maximum Safety
Some PDF passwords can be hacked easily. With our AES 128-bit encryption, it would take thousands of years to crack your password with a regular computer.
Password Strength for Added Security
The more complex your password, the safer your file is from unauthorized changes. We recommend using a non-dictionary word of at least 7 characters with numbers, capital letters, and symbols.
Password-Protection in the Cloud
You don't need any software to use Smallpdf's online services. You can protect your PDF with a password by simply uploading it, choosing a strong password, and then downloading the password-protected PDF.