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Home/PDF/PDF Password Protector

PDF password protector

Add a password to a PDF so it can only be opened with the correct password. Encryption is applied entirely in your browser.

Drag & drop your file or

PDF · processed in your browser, never uploaded

Why use this tool

PrivateRuns on your device — nothing is uploaded
FastWorks instantly, no waiting in a queue
FreeNo signup, no watermark, no limits
Any devicePhone, tablet or computer

Try next

Image to PDF Converter PDF to Image Converter PDF Merge Tool PDF Split Tool

Frequently asked questions

What encryption is used?

AES-256, the strongest option recommended by the current PDF standard.

Is my PDF uploaded anywhere?

No, encryption happens locally in your browser — the file never leaves your device.

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