Free Free PDF Password Protector - Add Password to PDF Online Online
Free PDF Password Protector
Add password protection to your PDF files. Secure your sensitive documents with a strong password. Protect PDFs from unauthorized access, copying, printing, or editing.
- Add password protection to PDF
- Set user password (required to open)
- Set owner password (for permissions)
- Control printing and copying permissions
- Protect sensitive documents
- Instant download
- 100% free and secure
Free PDF Password Protector
Add password protection to your PDF files. Secure your documents from unauthorized access.
Using the PDF Password Protector Effectively
The PDF Password Protector helps you handle common PDF tasks in the browser. It is designed for convenience on everyday documents such as forms, handouts, and light office files.
PDF structure varies widely. Scanned image PDFs behave differently from text-based PDFs, and encrypted files may require a password before any operation can proceed.
For confidential documents, understand where processing happens and avoid uploading sensitive files when policy requires local-only handling.
After any transform, open the output and spot-check pages, rotation, order, and file size.
Specific to this page: the PDF Password Protector focuses on a single workflow so you can finish the task without navigating unrelated features. That narrower scope keeps the interface faster to learn.
How to use this tool
- Choose a PDF that is not corrupted and is readable in a normal viewer.
- Apply the operation with clear page ranges or options.
- Download the result and verify page order and clarity.
- Keep an original backup until you confirm the new file is correct.
Examples
- Test with a short sample PDF before processing a large packet.
- If output looks blank, the source may be image-based or permission-restricted.
Frequently Asked Questions about Free PDF Password Protector - Add Password to PDF Online
Does the PDF Password Protector keep my file private?
Prefer not to process highly sensitive files online; follow your organization data rules.
Why did file size increase?
Re-encoding images or removing compression can increase size.
Can I process password-protected PDFs?
Only if you can unlock them and the tool supports that workflow.
What about form fields?
Some operations flatten or alter interactive fields—verify if forms must remain fillable.
Is page numbering preserved?
Visual page order should match your settings; printed numbers inside content are unchanged unless edited.