Security

Protect PDF Guides & Variations

A PDF password protection tool encrypts a document so that it can only be opened by someone who knows the password you set, using industry-standard 256-bit encryption. Once protected, the file itself — not just a viewer's settings — enforces the password requirement, so it stays protected no matter where the file is copied, emailed or stored.

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Security

Unlock PDF Remove a password from a PDF file that you own. Sign PDF Add your signature to a document electronically. Watermark PDF Stamp text or a logo across every page of a PDF.

From the Blog

Jun 20, 2026 · 5 min read

How to Password Protect Your PDF Files (and When You Should)

What PDF encryption actually protects against, how to choose a strong password, and how to remove it again later.

May 22, 2026 · 4 min read

PDF Metadata Explained: Title, Author, Subject and Keywords

What each metadata field actually does, why search engines and file managers read it, and how to clean it up.

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