Unlock & Protect PDF Documents Online
Remove a password from a PDF you own, or lock one down with strong 256-bit AES encryption. Add one or more PDFs below, pick a mode and download the result — everything happens right in your browser and nothing is uploaded to a server.
Unlock / Protect PDF tool
Unlock / Protect PDF
Remove a password from a PDF, or add strong password protection. Max 100 MB per file.
Drop PDF files here or browse
You can add multiple PDFs — each up to 100 MB
Unlock & Protect PDF Online
Take control of who can open and edit your documents.
Unlocking a PDF removes the password you own, so you can open, edit and share the document without typing a key every time. Protecting a PDF does the opposite — it locks the file with a password using strong 256-bit AES encryption, so only people with the password can open it.
When you protect a PDF you can also choose which actions to allow, such as printing, copying text and editing pages. This makes it easy to share a document while keeping control over how it is used.
Everything is processed locally in your browser. Your files are never uploaded to a server, and the original PDFs stay exactly as they were — you only download a new unlocked or protected copy.
How to Unlock or Protect a PDF
A few simple steps. No account, no upload, no waiting.
Add your PDFs
Drop one or more documents into the box above, or click browse to choose them from your device.
Choose Unlock or Protect
Select the mode, then enter the existing password to unlock, or a new password to protect.
Run and download
Set permissions if protecting, then click Run & Download to save the new PDFs.
Why use ePDFConverter for unlocking & protecting?
Simple, safe and completely free — built around your privacy.
Free to use
No paywalls, no daily limits and no hidden charges — unlocking and protecting is free.
256-bit AES encryption
Protect uses strong, industry-standard AES encryption to lock your documents.
No sign-up
There is no account to create and nothing to install. Just open the page and go.
Files stay on your device
Your PDFs are never uploaded, stored or shared — they never leave your device.
Frequently asked questions
Everything you need to know about unlocking and protecting PDFs.
How do I unlock a password-protected PDF?⌄
Add the PDF above, enter the password it was protected with, then click Run & Download. The unlocked PDF is downloaded instantly.
How do I password-protect a PDF?⌄
Switch to Protect PDF mode, enter a password twice, choose the permissions you want to allow, then click Run & Download.
Is unlocking or protecting a PDF free?⌄
Yes. Both are completely free with no sign-up, no paywall and no limits.
Are my PDF files uploaded?⌄
No. Everything happens in your browser, so your files are never sent to a server.