Password Protect PDF Online
Add a password to your PDF instantly. 128-bit encryption, free, no signup required.
Drag & drop your file here
or click to browse
PDF — Max 50MB
How to Password Protect a PDF
- Upload your PDF — Drag and drop or click to browse (max 50MB).
- Enter a password — Choose a strong password (minimum 4 characters).
- Download — Your password-protected PDF is ready instantly.
Why Password Protect a PDF?
Password protection keeps the contents of a PDF private so only someone with the password can open it. This matters for contracts, financial statements, employee documents, and any file a business shares through email or cloud storage. Our tool applies industry-standard encryption in your browser and is free, with no signup required.
The protected file still works in every major PDF reader, so you can share it confidently with clients and colleagues without worrying about unauthorized access.
Use Cases
- Contracts and agreements — Keep signed legal documents read-only for the intended party.
- HR and payroll — Send payslips and employee files securely.
- Financial reports — Protect balance sheets and invoices before sharing.
- Personal records — Lock medical, tax, or identification documents.
FAQ
What encryption is used?
Your PDF is protected with 128-bit RC4 encryption via Ghostscript, which is compatible with all major PDF readers.
Can I remove the password later?
Yes — use a PDF unlock tool with your password to remove protection.
Is my PDF secure on your servers?
Yes. Files are automatically deleted after 1 hour and never stored permanently.