Password protect PDF – PDFMega

Lock your PDF with a password
Upload a PDF, set a strong password, choose permissions, and preview the first page before protecting.

Upload a PDF and configure password and permissions. A live preview shows the first page of your PDF.

No file selected yet.
Password
Use at least 8 characters with a mix of letters, numbers, and symbols.
Strength: Too short
Permissions & encryption
Permissions are enforced by PDF readers that respect security flags.
Upload a PDF and set a valid password to continue.
Live preview (first page)
We render the first page of your PDF and show basic file info. The password itself is never sent to the preview engine.
0 pages Size: —
Waiting for PDF…
No file loaded.
Choose a password to see security summary.
How to use:
  • Upload your PDF – the first page appears in the preview.
  • Enter an open password and confirm it. Aim for a strong password.
  • (Optional) Adjust permissions like printing or copying.
  • Click Protect PDF to download the locked file.