Lock and encrypt PDF files online with ease to protect confidential information.
How to Protect PDF Online for Free
1.
Upload your PDF file – Click the "Choose File" button or drag and drop your PDF into FILPDF.
Upload PDF file to add password protection online
2.
Set a password and restrictions – Enter the password you want to apply. Optionally, restrict editing, printing, or copying to secure your document.
Add password and set restrictions to protect PDF file
3.
Download your secured PDF – Click "Download" to save your password-protected PDF, ready for safe sharing or storage.
Download password-protected PDF with security restrictions
Encrypt a PDF with password protection
Keep your confidential documents safe with FILPDF, a free online tool that lets you protect PDF files with a password in seconds. Whether it’s a report, contract, or invoice, you can easily lock your PDF to prevent unauthorized viewing or sharing. Unlike desktop programs, FILPDF works directly in your browser — no downloads, no setup, and no file size limits. Simply upload your file, set a password, and download your protected document instantly.
Our PDF protection tool uses strong encryption to make sure only people with the right password can open your file. You can secure PDF online against copying, editing, or printing without changing its layout or quality. All files are processed in a secure cloud environment and deleted automatically after encryption, ensuring your data stays private and protected at all times.
With FILPDF, protecting sensitive PDFs has never been easier. You can use the password protect PDF feature on any device — phone, tablet, or computer — without registration or hidden costs. It’s the simplest way to safeguard your important documents quickly and reliably, whether for school, work, or personal use.
FAQ – Password Protect PDF
How do I password protect a PDF online for free?
Upload your PDF, set a password, optionally restrict editing or printing, and download your secured PDF instantly.
Can I restrict editing or printing when protecting my PDF?
Yes, you can set restrictions like editing, printing, or copying in addition to adding a password.
Do I need to install software to password protect PDFs?
No, this tool works entirely online, so you don't need to install any software or create an account.
Is it safe to password protect PDF files online?
Yes, your files are processed securely, and no data is stored permanently on the server.
Can I password protect multiple PDF files at once?
Currently, only one PDF can be protected at a time to ensure security and accuracy.
Will adding a password affect the PDF formatting?
No, your PDF's layout, images, and formatting remain intact after adding a password.
Can I remove or change the password later?
Yes, if you know the password, you can unlock your PDF and apply a new password.
How strong is the password encryption?
Standard PDF encryption methods are used to ensure your password is secure and protects your document effectively.
Can I use this tool on Windows, Mac, iPhone, or Android?
Yes, it works fully online on all major platforms and devices.
