Protect PDF
Add a password to your PDF so only people who know it can open it.
Made by one person, free for everyone to use.Encrypted with AES-256, the strongest standard PDF encryption. Opens in every modern PDF reader. Keep your password safe: it can’t be recovered.
How it works
- 1. Choose your filePDF. It opens on your device.
- 2. Set your optionsSee a live preview before anything is saved.
- 3. DownloadProcessed in your browser. Nothing is uploaded.
Free online protect pdf: fast, private and no signup
Add a password to your PDF so only people who know it can open it. Protect PDF on JustEditFiles works right in your browser on Android, iPhone, Windows, Mac and Linux. There is nothing to install, no account to make and no watermark added to your PDF file.
Unlike most online tools, your file is never uploaded: the protect pdf runs on your own device, so even private documents, photos and videos stay with you. It also means no waiting for uploads and less mobile data used.
People also use it to: password protect pdf, encrypt pdf, lock pdf, add password, secure pdf.
Protect PDF: questions and answers
How do I use the protect pdf online?
Open JustEditFiles's Protect PDF page, choose your PDF file, set your options while watching the live preview, then download. It takes a few seconds and works in any modern browser.
Is this protect pdf really free?
Yes. Protect PDF on JustEditFiles is completely free: no account, no trial, no daily limit and no watermark on your result.
Are my files uploaded to a server?
No. Protect PDF runs inside your browser, on your own phone or computer. Your file is never uploaded, so it stays private and it saves your mobile data.
Which file formats does Protect PDF support?
It opens PDF and saves as PDF.
Can I use Protect PDF on my phone?
Yes. JustEditFiles is built for phones first, including low-cost Android phones, and works just as well on iPhone, tablets, Windows, Mac and Linux. There is nothing to install.
Is there anything I should know before using Protect PDF?
Encrypted with AES-256, the strongest standard PDF encryption. Opens in every modern PDF reader. Keep your password safe: it can’t be recovered.