Who can open the document I encrypted?

Only people who know the password you set can open the document. Make sure you store your password in a safe place; we do not know your password and cannot recover it if it is lost.

Can an encrypted PDF be opened in every PDF reader?

Yes, Adobe Acrobat, Foxit, macOS Preview, and all modern PDF readers support AES-encrypted files.

Can I encrypt multiple PDFs at the same time?

The batch encryption feature is available in premium plans. In the free version, one file is processed at a time.

Does the encryption process affect document quality?

No. Encryption only adds access control; the document's text, image, and formatting quality do not change.

Can I encrypt on mobile devices?

Yes, Encrypt PDF works fully in mobile browsers; you can easily encrypt PDFs from a smartphone or tablet.

PDF Encrypt — Password Protect PDFs Online

🔒Your files never leave your device — processed in-browser, never uploaded to a server.

AES-256 Encryption

Industry-standard PDF 1.7 AES-256 encryption (qpdf). Files are processed server-side and deleted immediately after.

Drag PDF file(s) here — select multiple for batch mode

or click to select · Max 50MB

Auto-deleted in 7 days

256-bit SSL

Support

Your files are encrypted with SSL and automatically deleted from our servers 7 days after processing.

📖 How to Use

Upload PDF

Upload the PDF file you want to encrypt.

Set Password

Enter a strong opening password. You can also set permissions (print, copy).

Encrypt

Click "Encrypt". AES-128/256 encryption is applied.

Download

Download the encrypted PDF. Make sure you remember your password.

Frequently asked questions

Encrypt PDF uses AES-256-bit encryption; this is one of the strongest standards used in the industry for bank and government documents. When you choose a strong password, the document becomes extremely secure.

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