Protect PDF with Password

Apply a highly secure password to encrypt and thoroughly protect your confidential document.

Select the PDF to encrypt

Drag the document anywhere on the page or click here

Why is it absolutely critical to protect a PDF file with a password?

In the modern digital age, sending highly confidential documents via email or instant messaging apps has become the standard corporate norm. However, sending HMRC bank statements, lucrative B2B contracts, NHS medical records, or employee payslips without any cryptographic protection exposes you and your clients to severe legal risks of privacy breaches and malicious data theft.

Unassailable 256-bit encryption: The absolute key to your security

PDFLab's PDF Protection module doesn't just superficially ask for a password when opening the file; it acts at a deep structural level. We use advanced AES encryption to make the raw content of your file completely illegible to absolutely anyone who does not possess the precise access key (the password you actively chose). No third-party unlocking software or rapid "brute force" hacking attempt can bypass this cryptographic lock to view your confidential UK corporate information.

Once you securely download the armoured file, simply communicate the password to your recipient (preferably via a distinct secondary channel, for example, sending the PDF via email and the password via an encrypted SMS or WhatsApp) to ensure a perfectly secure, GDPR-compliant data delivery.

Guide: How to securely set the password encryption

4-step security instructions

  1. Upload the PDF document you want to put in the digital safe by dragging it, browsing files, or importing it from the cloud.
  2. Choose and carefully enter a strong password in the provided field (you can conveniently click the eye icon to view it whilst typing to entirely avoid mistakes).
  3. Click the red "Protect PDF Now" button.
  4. Download your new heavily protected file. From this exact moment on, entering the correct password will be strictly mandatory to open or print it.

The PDFLab UK Security Guarantee

  • High-End Security: Advanced cryptographic algorithms fully compliant with stringent industry standards to actively prevent unauthorised data access.
  • Unrivalled Free Generosity: Secure your highly sensitive files up to 15 times a day completely for free. More than triple the standard web average!
  • Zero Traces on Cloud Servers: To absolutely guarantee your privacy, both the original file and the encrypted protected version are irretrievably deleted from our European servers within one hour.