Server-local PDF encryption
PDF✓ Editorially reviewed
Password Protect PDF
Create a password-protected encrypted copy of a PDF.
Inputs .pdfOutput .pdfMaximum 1 file(s)Processing Server-local PDF encryption
PROCESSING TRANSPARENCY
Trust center ↗Know what happens before you upload.
A temporary per-request workspace is cleaned when processing ends.
A password is not a substitute for full access control or rights management, and anyone who knows it can open the file. Use a strong password and store it separately.
Open the result in a separate PDF reader and confirm that it asks for the password before sharing it. Keep the original until the password is safely stored.
Workspace
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Input—Output—Size change—Time—
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INFINITY INTELLIGENCE
A copilot that understands this tool.
Ask what a setting means, whether this is the right tool, how to recover from an error, or what to do with the result next. Infinity receives safe context from this page — not the file contents automatically.
PRACTICAL CONTEXT
What this tool is good at — and where to be careful.
When this tool makes sense
Adding an open password to a PDF before sharing when you want to prevent casual access by someone who does not know the password.
What the engine actually does
The tool reads the PDF and writes a new encrypted copy using the password you provide. The password is sent as part of the processing request and is not displayed in the page afterward.
What it does not promise
A password is not a substitute for full access control or rights management, and anyone who knows it can open the file. Use a strong password and store it separately.
A 20-second quality check
Open the result in a separate PDF reader and confirm that it asks for the password before sharing it. Keep the original until the password is safely stored.
Frequently asked questions
Do you keep the password?
It is not displayed after submission and is used only within the temporary processing request.
Does encryption prevent copying completely?
It protects file opening, but it is not a full DRM system and cannot prevent all copying after the file is opened.
✦Clear limits
Supported formats and limits are shown before you start.
⌁No cloud file history
Public conversions are designed around temporary request workspaces, not permanent file storage.
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