Lock PDF with Password

Add password protection to your PDF files. Secure your documents with strong encryption.

Protect PDF with Password

Upload your PDF file and set a password to protect it

Click to upload or drag and drop your PDF

Maximum file size: 10MB

Important Security Notice

Please remember your password. Once the PDF is encrypted, it cannot be recovered without the password. All processing is done locally in your browser for maximum security.

Strong Encryption

Protect your PDFs with industry-standard 256-bit AES encryption.

Privacy Protected

All processing happens in your browser. No files are uploaded to servers.

Custom Permissions

Set specific permissions for printing, copying, editing, and annotations.