Protect PDF
Add a password to protect your PDF.
Drop your PDF here, or click to choose a file
PDF files only
Your file is ready.
DownloadHow it works
- Choose a PDF file.
- Set a password (twice, so a typo cannot lock you out).
- Download the protected PDF — it will ask for the password when opened.
This uses the PDF Standard security handler (40-bit RC4), the same kind of password protection PDF readers understand. Keep your password safe: a lost password cannot be recovered from the file.
Why use Protect PDF on Abloom Pdfly
- Private by design: your file is processed in your browser and is not uploaded.
- Free: no sign-up, no watermark on your output, and no daily limit.
- Works everywhere: phones, tablets and computers in any modern browser, with nothing to install.
- Your original stays untouched: you always download a new file.
Protect PDF: common questions
Is Protect PDF free?
Yes — every tool on Abloom Pdfly, including Protect PDF, is free to use. No account, no watermark on your output, and no daily limit.
Are my files uploaded to a server?
No. The work happens on your own device, inside your browser. Nothing you convert, edit or read is sent to a server.
Will it change my original file?
Never. Protect PDF creates a new file for you to download, and your original stays exactly as it was.
Does it work on my phone?
Yes. Any modern browser works — Android, iOS, Windows, macOS or Linux — and there is no app to install.