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Protect PDF

Add password encryption to your documents

Upload your PDF to protect pdf

Drag & drop a PDF, or click to browse

Choose File

PDF files only · Max 50 MB

Processed locally in your browser
Never uploaded to any server
Auto-deleted after session
Instant processing
Pro Tip

Did you know? You can double-click any text in the editor to edit it directly. PDFino automatically matches the original font style!

Secure your PDF files with industry-standard encryption. All processing happens locally in your browser.

100% Browser-Based
Files Never Leave Your Device
No Installation Required
Fast Processing
Mobile Friendly
Secure PDF Editing
Privacy Focused
100% Browser-Based
Files Never Leave Your Device
No Installation Required
Fast Processing
Mobile Friendly
Secure PDF Editing
Privacy Focused

How to protect pdf

1

Upload

Select your PDF files from your computer or drag and drop them into the upload area.

2

Process

Wait a few seconds while our system handles the protect pdf.

3

Download

Once finished, download your new PDF file directly to your device for free.

Secure Your PDFs with Password Protection

Adding a password to your PDF is the best way to ensure that sensitive information remains confidential. Our free online PDF protector uses industry-standard encryption to secure your document. Because PDFino works entirely within your web browser, your unencrypted files are never uploaded to any cloud server, providing you with military-grade privacy and peace of mind.

Frequently Asked Questions

Upload your document, type the new password you want to use to secure it, and click 'Protect PDF'. Your file will be instantly encrypted and ready for download.