Password Protect PDF
Add an open password and permissions. Runs entirely in your browser — your PDFs never leave your device.
Select PDF Files
Set Password & Options
Protect & Download
PDF Successfully Protected
Your document is now encrypted and secure
- Everything runs locally in your browser. No files are uploaded.
- To support password protection entirely client-side, pages are rasterized to images and re-packed into an encrypted PDF.
- Resulting PDFs won't have selectable/searchable text; hyperlinks/metadata from the original aren't preserved.
- If your input PDF is already password-protected, enter its password under "Source PDF password".
How to Password Protect a PDF Securely
1. Select Your PDF(s)
Click or drag and drop your file(s) into the upload box. Your files are **never uploaded** and remain private on your computer.
2. Set a Strong Password
Enter and confirm a strong password. You can also set advanced permissions (like disabling printing or copying) in the options panel.
3. Protect & Download
Click "Protect PDF Files". Your new, encrypted PDF is created instantly in your browser for you to download. 100% secure and private.
Your Security is Our Priority
100% Private & Secure
This tool runs entirely in your browser. Your PDF is **never uploaded to a server**. This is the most secure way to encrypt a file.
How It Works (Rasterization)
To ensure 100% client-side security, we convert each page to an image and re-package it as an encrypted PDF. Your text will no longer be searchable.
Zero Data Retention
Since your files are never uploaded, we never see them and cannot store them. Your data's privacy is 100% guaranteed.
Frequently Asked Questions About Protecting PDFs
Why is my new PDF's text not selectable?
To add a password 100% securely in your browser (without uploading your file), our tool "rasterizes" the PDF. This means it converts each page into a secure image and then places those images inside a new, password-protected PDF. This process guarantees your file's privacy but makes the text part of the image, so it can't be selected or searched.
Is my file really secure? What encryption is used?
Yes. Your file is encrypted using standard PDF encryption (which typically involves AES-128 or AES-256) right in your browser before you even save it. Since the file is never uploaded, it's impossible for anyone else to intercept it.
What's the difference between an "Open Password" and permissions?
The **Open Password** (or user password) is what a person needs to simply open and view the file. **Permissions** (which use a separate, hidden "owner password") control what a user can *do* after opening the file, such as printing, copying text, or modifying the document.