Protect PDF
Add password protection to your PDF file to prevent unauthorized access.
or drag & drop your PDF here
Max 100MB
How to Password Protect a PDF Online for Free
Password protecting a PDF adds encryption to prevent unauthorised access to your sensitive documents. Whether you are sharing financial records, legal contracts, or personal information, adding a password ensures only intended recipients can open and read the file. Our free online tool applies industry-standard encryption to your PDF directly in your browser, so your documents are never uploaded to external servers. Set a password and download the protected file in seconds.
Frequently Asked Questions
How secure is the PDF password protection?
Our tool applies standard PDF encryption which is widely supported by all PDF readers. The security level depends on the strength of your chosen password. Use a strong, unique password with a mix of letters, numbers, and symbols for best protection.
Can I remove the password from a protected PDF later?
Yes, if you know the password. Open the protected PDF with the correct password, then save it without protection. Without the password, the encryption cannot be removed.
Will the recipient need special software to open a protected PDF?
No. Any standard PDF reader including Adobe Acrobat, Preview on Mac, and most browser-based viewers can open password-protected PDFs. The recipient simply enters the password when prompted.