Protect PDF
Encrypt your PDF with a strong password to prevent unauthorized access and keep your sensitive data secure.
Upload PDF to Protect
Free Account required (up to 50MB)
Encrypt and Password Protect PDF Online Free
Secure your highly sensitive documents, contracts, financial records, and private information with PDFjin's free online PDF protection tool. Our secure platform allows you to encrypt any PDF document with robust, industry-standard AES encryption and set custom password access permissions. This prevents unauthorized users from opening, viewing, editing, copying, or printing your intellectual property. Operating fully in your web browser, PDFjin provides professional-grade security without requiring expensive enterprise software or user registration. Simply drop your document, type your secret password, and download the locked PDF instantly. We place your privacy above all else: your password is encrypted, data transfers are strictly secured via HTTPS, and files are permanently deleted from our servers immediately after the protection process. Lock your files with confidence and protect your digital privacy today with PDFjin.