Protect PDF

Secure your PDF documents with a password. Encrypt your files locally for maximum privacy.

Upload PDF File

Select a PDF file to password protect

Choose PDF file

Secure your document with a password

Security Features

128-bit AES Encryption: Industry standard security for your documents.
Private Processing: Files are encrypted locally in your browser.
Restricted Permissions: Prevents copying, editing, and printing without the password.

Tips

• Choose a strong password with a mix of letters, numbers, and symbols.

• Remember your password! There is no way to recover it if lost.

• You can use our Unlock PDF tool if you know the password but want to remove it.

Secure Your PDF Documents

Protect your sensitive information by adding a password to your PDF files. Our tool encrypts your documents so that only people with the password can view them.

Ideal for:

Financial statements and bank records
Legal contracts and agreements
Personal identification documents
Confidential business reports

Strong Encryption

Uses industry-standard encryption to ensure your documents are safe from unauthorized access.

100% Private

Files are processed entirely in your browser. We never see your files or your passwords.

Prevent Viewing

Stop prying eyes. The content of your PDF cannot be viewed without the correct password.

Easy to Use

Just upload, set a password, and download. It's that simple to secure your files.

Related Tools

View All Tools

Merge PDF

Combine multiple PDF files into one

Popular

Split PDF

Split PDF files into separate pages

Popular

PDF to Word

Convert PDF files to Word documents

Popular

Word to PDF

Convert Word documents to PDF files

Unlock PDF

Remove password protection from PDF files

Word Counter

Count words, characters, and paragraphs in your text

Popular

View All File & Document Tools

Frequently Asked Questions

Everything you need to know about using our Protect PDF tool effectively

How do I password protect a PDF?

Simply upload your PDF file, enter your desired password, and click 'Protect PDF'. Your file will be encrypted with your chosen password, and you can download the protected version immediately.

What kind of encryption is used?

We use standard 128-bit AES encryption, which is widely supported by all modern PDF readers and provides strong security for your documents.

Can I remove the password later?

Yes, if you know the password, you can use our 'Unlock PDF' tool to remove the password protection from your file.

Is my document secure?

Absolutely. All processing happens locally in your browser. Your files are never uploaded to our servers, so your sensitive documents and passwords remain completely private.

Does this work on mobile?

Yes, our tool works on all devices including smartphones and tablets. You can protect your PDFs on the go without installing any apps.