Encrypt file

Protect any file with a password, using real AES-256 encryption.

🔒 100% private ⚡ No file uploads 🆓 Free, no limits

How to encrypt a file online and free

Upload the file you want to protect

Drag and drop any file type, or click to select it.

Choose a secure password

Enter a password that only you know. The longer and more varied it is, the more secure it will be.

Download your encrypted file

Click "Encrypt file" and download the result — an .enc file that can only be opened with your password.

Why encrypt a file on PDFDocks?

Encrypting a file before sending it via email or uploading it to the cloud adds an extra layer of protection — even if someone accesses the file, they won't be able to open it without your password. PDFDocks does it directly in your browser, with real AES-256 encryption, ensuring your file and password never leave your device.

Is it really secure, or just symbolic protection?

It's real encryption: AES-256, the same standard used by banks, governments, and security companies. It's not simple weak password protection — without the correct password, the file is mathematically impossible to open with current technology.

Can anyone at PDFDocks see my password or file?

No. The entire process happens in your browser — your file and password are never sent to any server. We have no technical way to access them.

What types of files can I encrypt?

Any type: documents, photos, videos, compressed files... there are no format restrictions.

How do I open the encrypted file later?

Using our "Decrypt file" tool, with the same password you used to encrypt it.

What if I lose my password?

The file cannot be recovered in any way. Since we don't keep any copies on any server, we cannot help you regain access.

Is there a file size limit?

We haven't set any artificial limits. The only real limit is your device's memory.