Protect PDF

Add password protection and permission controls to your PDF directly in the browser.

Set an open password, owner password, and controls for printing, copying, editing, forms, comments, and page assembly.

Upload a PDF to protect

Choose a PDF file or drag it here. The file is processed locally in your browser.

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Input size0 B
Permissions4 / 7
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Best online tool to protect PDFs

Protecting a PDF adds a password and permission settings so the document is harder to open, copy, edit, print, annotate, or reorganize without authorization.

Use it before sending private forms, contracts, invoices, client files, or internal documents that should not be freely changed.

Require a password

Add an open password so the PDF prompts for credentials before the content can be viewed.

Set document permissions

Control common actions such as copying, printing, editing, form filling, comments, and page assembly.

Work in your browser

The PDF is processed locally, so you can protect documents without uploading them to a server.

How to protect a PDF for free

  1. 1Upload the PDF you want to protect.
  2. 2Enter a document password and optional owner password.
  3. 3Choose permission settings, click Protect PDF, then download the finished file.

Protect PDFs with password settings

Use a strong password

Long passwords with numbers, uppercase letters, and symbols are harder to guess.

Store passwords safely

The password cannot be recovered by this browser tool after the protected PDF is created.

Keep permissions tight

Disable copying, editing, and page assembly when the document is meant for final delivery.

Keep everything local

All processing happens in your browser, so the file stays on your device while the tool works.

Frequently Asked Questions

Does this upload my PDF?

No. Processing happens locally in your browser.

What is the owner password?

The owner password is used to override restrictions and manage permissions for the protected PDF.

Can a password be recovered?

No. Keep a secure copy of your passwords before downloading the protected file.

Does this flatten the PDF?

No. This tool is for password protection and permissions, not flattening pages into static images.

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