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SUPPORT CONVERTCRAFT KEEP THE FREE TIER ALIVE

We don’t track you and we don’t know if you’re using an adblocker. Our ads are run by Google — no pop-ups, no annoying ads, just clean placements. Ads help us keep our free tier completely free for everyone.

Why We Need Your Support

  • Google Ads Only: We run Google AdSense — no pop-ups, no video ads, no misleading banners. Just clean, non-intrusive placements.
  • No Tracking: We do not track you, sell your data, or monitor your browsing. Your privacy is absolute.
  • Free Forever: Ads fund our servers so we can keep the free tier available to everyone, everywhere, without compromise.

Whitelist Us 💜

If you use an adblocker, please consider whitelisting ConvertCraft. It takes 10 seconds and directly keeps the project alive.

Every ad view helps us maintain servers, develop new tools, and keep your data private — all at no cost to you.

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Support via Buy Me a Coffee or get the Support Plan with exclusive benefits.

How to Password Protect a PDF Online

Add password protection and encryption to PDF files in your browser. Free, private, no upload — your documents stay secure.

Password-protecting a PDF ensures that only authorized recipients can open and read the document. This is essential for contracts, financial statements, medical records, and any sensitive information shared via email.

ConvertCraft's PDF Protect tool adds AES-256 encryption to your PDF entirely in your browser. The encryption process runs locally — your document never leaves your device.

To protect a PDF: open the PDF Protect tool, drop your file, set an owner password (controls permissions) and optionally a user password (required to open), and click Protect.

You can set granular permissions: allow or deny printing, copying text, editing, and form filling. The owner password controls these permissions while the user password gates access to the document itself.

The encrypted PDF is compatible with all standard PDF readers including Adobe Acrobat, Apple Preview, Chrome's built-in viewer, and Foxit Reader.

Open PDF Protect →

Frequently Asked Questions

What encryption does PDF protection use?

ConvertCraft uses AES-256 encryption, the same standard used by banks and governments. It is effectively unbreakable with current technology.

Can I remove a password from a PDF?

If you know the owner password, yes — use the PDF Unlock tool. Without the password, decryption is not possible.

What is the difference between owner and user passwords?

The user password is required to open the PDF. The owner password controls permissions like printing and copying. Both are optional — you can set one or both.