Quick Answer
A PDF protector adds a password to your document so only people who know it can open it. This tool also lets you control whether the file can be printed, copied or edited — all handled with standard PDF encryption, computed locally in your browser.
What This Tool Does
After you add a PDF, set a password (at least 4 characters) and optionally a separate owner password. The owner password can override restrictions, so it is useful when you want to restrict others but keep full control yourself. Three permission switches — printing, copying text, and editing — are on by default; uncheck any of them to lock that action down. Click Protect PDF and download the encrypted file.
Key Features
- User password — required to open the document.
- Owner password — optional separate password that can change restrictions later.
- Restriction controls — disable printing, copying or editing independently.
- Standard PDF encryption — the output uses the PDF security handler, so any PDF reader respects the password.
- Local processing — encryption runs in your browser; the password never leaves your device.
How to Use the Protect PDF Tool
- Add your PDF.
- Enter a password (at least 4 characters).
- Optionally set a separate owner password — leave it blank to use the same password.
- Uncheck any restriction you want to disable (printing, copying, editing).
- Click Protect PDF and download the encrypted file.
Examples
An accountant sends a client's tax summary by email. Protecting it with a password — shared separately over the phone — means the file is unreadable even if the email is intercepted. A designer shares a preview with a watermark-free PDF but disables copying so the layout can't be lifted for reuse.
Use Cases
- Contracts and legal documents — keep signed agreements readable only by the parties involved.
- Invoices and financial records — add a password before emailing sensitive statements.
- Confidential reports — restrict printing or copying when sharing drafts internally.
Tips
- There is no password recovery — encrypted PDFs are secure by design. Store the password somewhere safe before downloading.
- Restrictions deter casual copying but are not absolute security: a determined user with the owner password can remove them.
- You can change or remove the password later with the Unlock PDF tool (using the owner or user password).
Privacy
Encryption is computed locally with a standards-based PDF security handler. Your document and password are never transmitted.
Conclusion
Password protection with granular control, done in your browser in seconds. Protect a document now — and keep the password safe.