Protect PDF
Encrypt your PDF file with a password, keep the workflow clean, and download the protected document when the process is complete.
Or drop a PDF file here.
document.pdf
Use a memorable strong password. You will need it later to open the protected PDF.
Related PDF tools
After protecting a PDF, users often need to unlock it later, sign it, watermark it, or redact sensitive content before sharing.
How to use Protect PDF
Upload your file
Choose a PDF from your device or drag it into the upload area.
Set the password
Enter the password twice so the protected PDF is created with the intended value.
Protect the document
Click Protect PDF and wait for the browser workspace to finish the process.
Download the result
Use the Download button that appears beside Protect PDF after the file is ready.
Protect PDF FAQ
Clear answers for common password protection questions.
How do I protect a PDF with a password?
Upload the PDF, type and confirm the password, click Protect PDF, and use the Download button once the secured file is ready.
Will the Download button show immediately?
No. The Download button stays hidden until the protection step finishes successfully, so the workspace stays cleaner and clearer.
Can I use Protect PDF on mobile devices?
Yes. The page layout, upload area, workspace controls, and download flow are designed to adapt across desktop, tablet, and mobile screens.
What if my PDF is already password protected?
If the PDF already has a password, unlock it first if you need to remove or replace the existing protection before protecting it again.