Password-protect a PDF
Encrypt sensitive documents before sharing them. Only people with the password can open the file. PDFroo uses AES-256 via the trusted qpdf engine, right in your browser.
Processed on your device · never uploadedDrop your file here
or
Choose PDF fileFiles stay on your device – nothing is uploaded
How to use Protect PDF with PDFroo
- Choose the PDF to protect.
- Enter a strong password and optionally restrict printing, copying or editing.
- Press “Protect PDF” and download the encrypted file.
Choosing a good password
Use at least 10 characters mixing words, numbers and symbols. Share the password through a different channel than the file – for example, send the PDF by email and the password by SMS.
Frequently asked questions
Are my files uploaded to a server?
No. PDFroo processes your files inside your own browser using JavaScript and WebAssembly. Nothing is uploaded, so your documents never leave your device and there is nothing for us to store or delete.
How strong is the encryption?
PDFroo uses AES-256, the strongest standard PDF encryption, supported by all modern PDF readers.
What if I forget the password?
There is no way for us to recover it – we never see your file or password. Keep the password somewhere safe.
What do the restrictions do?
They ask PDF readers to block printing, copying or editing. Reputable readers respect them, but restrictions are less secure than the open password itself.