Protect PDF Online - Free online tool to encrypt PDF files with password.

Free PDF File Encryptor. PDFProtectFree enables you to lock PDF documents in the simplest and fastest way.
Super easy to use. With our service, you can drag and drop your .pdf files and set the password to encrypt.
Super safety service. All uploaded files will be deleted permanently within 15 minutes. You privacy is our priority.
100% Free. No need to register. No email address required. Just focus on pdf encryption.

Drag and drop your .PDF files. Enter the password and press "Upload and Encrypt" button to start the encryption process.

Password: (Encrypted with AES256) Unlock PDF Online>>

Drop files here or click to upload

Expecting an offline conversion process and faster performance? View our desktop software.

Step 1. Drag your .pdf files and drop onto the drop zone. Up to 5 PDF documents are allowed to upload each time.
Step 2. Enter the password in the textbox. We use AES-256 technology to encrypt your PDF documents.
Step 3. Then, click "Upload and Encrypt" button and our service will perform the files uploading and encryption process..
Step 4. Wait for a seconds and you will get a download link. Hit it and download the PDF files in a zip file from our server..

We provide the faster pdf encryption service with no restrictions.

All data will be cleared in 15 minutes. No PDF files will be stored in our server.

We guarantee high quality PDF combination results. No words and layout will be changed.

100% free. No restrictions on the number of both uploaded PDF files and pages.

100% clean. It is safe to use our PDF merging service.

We also provide desktop version. It is available both on Windows and Mac. Learn more...