Protect PDF
Add password protection to a PDF document.
Open tool →PDF tools to protect your documents with a touch of magic
Protect, unlock, redact and manage PDF files directly from your browser.
Secure PDF online for free
Clear privacy information
No registration
Works on all devices
Encrypt PDF
Apply encryption options to compatible PDF files.
Open tool →Unlock PDF
Remove a password from a PDF you are authorized to edit.
Open tool →Remove PDF Password
Create an unlocked copy of an authorized PDF.
Open tool →Redact PDF
Hide sensitive text or page areas before sharing.
Open tool →Remove PDF Metadata
Remove compatible document information and metadata.
Open tool →Sanitize PDF
Remove compatible hidden or unnecessary document information.
Open tool →Flatten PDF
Flatten compatible form fields and annotations.
Open tool →Sign PDF
Add a visible signature to a PDF document.
Open tool →Edit PDF Metadata
Review and update compatible document information.
Open tool →Simple by design
Choose the security operation you need and protect the PDF without complicated menus or unnecessary steps.
Quick security tools
Open the exact tool for passwords, redaction, metadata or document protection.
Clear privacy information
Each tool explains whether processing happens locally or temporarily on the server.
No software installation
Use the available tools from a current desktop or mobile browser.
More protection options
Protect, unlock, redact, sanitize and review document information online.
How to secure a PDF
Choose a security tool
Select password protection, unlocking, redaction, metadata removal or another available operation.
Add your PDF
Select the document and configure the available security options.
Save the secured file
Apply the operation and download the protected or cleaned PDF.
Why protect PDF documents?
Securing a PDF protects sensitive data, prevents unauthorized access, removes hidden metadata, and prepares documents for safe sharing.
Password protection
Add encryption and passwords to prevent unauthorized opening or editing.
Unlock access
Remove restrictions from files you own to regain full management access.
Redact sensitive data
Permanently hide confidential text or personal information before distribution.
Clean metadata
Remove hidden information and author details before publishing final documents.
FAQ
Frequently asked questions
Are the PDF security tools free?
The available tools can be used online without creating an account. Any technical limit is shown on the specific tool page.
Do I need to register?
No. Choose a security tool, add the PDF, and complete the operation without registering.
Is it safe to secure confidential PDFs?
Yes. Many security tasks run client-side directly in your browser without uploading your files.
Can I remove a password from my PDF?
Yes, provided you are authorized to access and unlock the file.
What is PDF redaction?
Redaction permanently obscures text or areas in a document so sensitive information cannot be viewed or extracted.
Can I clean PDF metadata?
Yes. The metadata tools allow you to view or remove information like author, creation date, and software used.
Are my files stored permanently?
No. Temporary processing files are automatically removed according to our privacy policy.
Available PDF security tools
Browse the tools by purpose and open the operation that matches your document.