🔒 Security · Free

Protect PDF Online Free

Add password protection and permission restrictions to your PDF. Restrict printing, copying, and editing — all processed locally in your browser, your file never leaves your device.

Drop your PDF here

or click to browse your files

PDF files only · Processed locally · No uploads

How to Password-Protect a PDF

Upload your PDF

Click "Select PDF File" or drag and drop your PDF into the upload zone. Your file is loaded directly in your browser — nothing is uploaded to any server.

Set your passwords

Enter an owner password (required) to control permissions. Optionally add a user password that recipients must enter to open the document.

Choose permissions

Select which operations to allow or restrict: printing, copying text, modifying content, adding annotations, filling forms, or assembling pages.

Download your protected PDF

Click "Protect PDF" and download the secured file. Share it knowing it has the restrictions you configured.

Frequently Asked Questions

Yes — all processing happens entirely in your browser. Your PDF is never uploaded to any server. The file stays on your device throughout the entire process, so your sensitive documents remain completely private.

The owner password controls document permissions — it lets you (the owner) change or remove restrictions. The user password, if set, must be entered by anyone who wants to open and view the PDF. If you only set an owner password, the PDF can be opened by anyone but operations like printing or copying may be restricted.

There is no way to recover a forgotten PDF password through this tool — we never see or store your passwords. Make sure to save your password in a secure location such as a password manager before protecting the document.