Passwords stay private
Passwords are never stored in the database, logs, or analytics.
PDF protect / encrypt
Password protect PDF files online
Encrypt PDFs with a password, restrict printing and editing, and download a protected copy. Passwords are never stored — keep yours safe.
Drop a PDF here
Drop anywhere, or choose an option below.
PDF
One PDF at a time50 MB max500 pagesPrivate processing
Files stay private while we process them, then they are deleted. Nothing is published unless you choose to share a result later.
Strong encryption
AES-256 by default, with a broader-compatibility option when needed.
Content preserved
Pages, text, and images stay intact — only security settings change.
Private & secure
Encryption runs privately in the background.
At a glance
Built for private document security
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Typical processing
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How it works
Three steps. Stronger PDFs.
Step 1
Upload a PDF
Add one document you want to password-protect.
Step 2
Set password & permissions
Choose a preset or customize printing, copying, and editing.
Step 3
Protect & download
We create an encrypted new PDF. Keep your password safe.
PDF protect
Encrypt without changing page content
Open password
Require a password before anyone can view the PDF.
Permission controls
Restrict printing, copying, editing, annotations, and forms.
Simple presets
Standard, restricted editing, read-only, or custom.
Compatibility options
Prefer AES-256, or choose RC4 for older readers.
Validated output
We verify encryption and page integrity before download.
No password recovery
We cannot recover lost passwords — by design.
Formats & limits
Supported files & options
Input PDF
Standard PDF files up to 50 MB.
Encryption
AES-256 (recommended) or RC4 (compatible).
Output
protected.pdf by default — original file unchanged.
Page limit
Up to 500 pages per document.
Permissions
Enforced by PDF readers — not a substitute for access control.
Privacy
Passwords are ephemeral and never written to job history.
Questions
Before you upload
An open password is required before the PDF can be viewed. Optional permission restrictions can limit printing, copying, and editing in supporting readers.
Yes for modern security. Choose Compatible (RC4) only if you need older PDF software that does not support AES-256.
No. Keep a copy of your password. We never store it and cannot reset it.
No. They are enforced by PDF readers and encryption standards. Do not treat them as a replacement for controlling access to the original file.
PDF toolkit
Related PDF tools
Clean properties with the PDF Metadata Editor, shrink files with the PDF Compressor, or convert color with PDF Grayscale.