Protect a PDF with a Password
Add password protection to a document.
Protect PDF status
Protect PDF is in development
This tool is currently in active development. All our converting, merging, splitting, compression, Word, OCR and unlock tools are 100% live and ready to use in your browser today.
Your documents are processed securely inside this browser tab. Nothing is uploaded, stored or shared — read more on our security page.
Why use MyPDF4U?
No account, no installation and no queue. Every tool opens straight onto the upload area, so the task you came for is the first thing on the page. Supported tools run inside your browser, which means your files stay on your device and results appear as soon as your computer finishes the work.
Frequently asked questions
Why is password protection not available yet?
Encryption has to be implemented correctly or it gives false confidence, so we are taking the time to get it right.
Good to know
PDF passwords come in two kinds: one to open the file and one to restrict printing or copying. Only the first genuinely protects content, because permission flags rely on the reader honouring them.