Private browser-based PDF processing

Protect PDF with a Password

Create a password-protected PDF copy and optionally restrict printing, copying or modification.

Local processing No signup Mobile friendly Free

Drop your PDF here or click to choose a PDF file PDF only · files are processed in your browser

Customize the output

Options

Current PDF password (if any)

New opening password

Owner password (optional)Used to control permissions.

Allowed actions

PrintCopyModify

Resolution

144 DPI

Image quality

88%

Output filename

Private by design

Your selected document stays on your device unless you explicitly use the webpage URL import option.

What this tool supports

Opening password
Owner password
Print/copy/modify permissions
Adjustable output quality
Local password handling

Browser requirements

Use a current version of Chrome, Edge, Firefox or Safari. Very large files may need a desktop device with more memory.

Simple workflow

How to use Protect PDF with a Password

1
Choose your file
Select the document you want to process.
2
Set the options
Choose pages, quality, layout or other settings.
3
Download the result
Process the file and save the new document.

Useful capabilities

What the tool can do

The tool uses modern browser document libraries, so routine processing can happen without uploading the selected PDF to OceanofTools.

Honest limitations

What to know before converting

For reliable browser encryption, pages are rebuilt as images. Selectable text, links, forms, annotations and digital signatures are flattened.

Frequently asked questions