Protect PDF

Add a password to a PDF (server, qpdf)

PDF

Protect PDF

Add a password to a PDF (server, qpdf)

Server processing: AES-256 PDF encryption requires qpdf. Your file is uploaded to Toolenza, processed, returned, and deleted the moment your download starts. We never persist a copy.

Pick a PDF to protect

About Protect PDF

A PDF protect tool adds password encryption to a PDF — open-password (require to view), owner-password (restrict actions like printing or copying), or both. Useful for confidential documents shared by email.

Frequently asked questions

Open: required to view the PDF. Owner: restricts actions (printing, editing, copying) — the document opens without it but with restrictions enforced.

AES-256 for modern PDFs — practically uncrackable without the password. Older formats (RC4-40) are weak; the tool defaults to AES-256.

Use a separate channel from the PDF itself — text the password if you emailed the file. Never include the password in the same email.

Embed this tool on your site

Drop a one-line iframe snippet into any blog, lesson plan, or knowledge base. Powered-by-Toolenza link included.

Embed this tool

Paste this snippet into any HTML page. The tool runs entirely in your reader's browser.

<iframe src="https://toolenza.io/tools/pdf-protect" width="100%" height="600" frameborder="0" loading="lazy" allow="clipboard-write" style="border:0;border-radius:12px;box-shadow:0 1px 3px rgba(0,0,0,.08);"></iframe>

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