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Fastest Encryption

Protect your PDF with a strong password using our online Lock PDF tool. Encrypt confidential and personal information with this web-based tool.

Completely Web-based Tool

This PDF tool is entirely web-based that can be accessed from anywhere without any hurdles. You can easily reach this online lock PDF by connecting your device to the internet.

Protect PDFs without Registration

This online facility doesn’t require any signup from its users to enjoy its services. Users can encrypt countless PDFs with our Lock PDF tool without facing any such hassle.

Privacy is Guaranteed

We assure you that your uploaded PDFs will not be used or shared with any third party for any possible reason. Also, your PDF files will be erased from our servers once the processing is completed.

Friendly Interface

The user-friendly interface allows you to protect your PDF with a strong password swiftly. You will not feel lost at any stage while using this free online lock PDF tool because of its simple-to-understand layout.

Lock PDF Easily

Upload the PDF file you want to encrypt from your device by tapping the Upload button. Click on the Lock PDF to start the process. Enter a strong password as per your desire and lock your PDF instantly.