Are NanoTools completely free to use?

Yes, all basic tools on NanoTools are completely free to use with no registration required. We offer premium features for power users.

Is my data secure when using NanoTools?

Your files are processed securely and are automatically deleted after processing. We do not store your files or data on our servers.

No installation required. All tools work directly in your browser on any device - computer, tablet, or smartphone.

We support a wide range of formats including PDF, JPG, PNG, WebP, GIF, JSON, XML, CSV, and many more depending on the tool.

Password protect PDF online for free. Secure PDF files with encryption. Restrict printing and editing permissions.

Drop PDF file here or click to browse

.pdf, application/pdf • Max 50MB

1
Upload PDF file
Select the document you want to protect
2
Set passwords
Choose user password for opening and owner password for permissions
3
Configure permissions
Select allowed actions (printing, copying, editing)
4
Download protected PDF
Save the password-secured document

1

Select the document you want to protect

2

Choose user password for opening and owner password for permissions

3

Select allowed actions (printing, copying, editing)

4

Save the password-secured document

User password controls who can open the PDF. Owner password controls editing, printing, and copying permissions.

Yes, you can allow printing but prevent copying, or allow reading but prevent editing, etc.

Use at least 8 characters with a mix of letters, numbers, and symbols for strong security.

Only if you know the owner password. Otherwise, specialized password removal tools are needed.