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The Syncfusion Essential .NET PDF library allows developers to build PDF security into their application, spanning a range of low to high encryption standards to secure or protect PDF documents against unauthorized access. It complies with the improved security of PDF 2.0, which provides AES (Advanced Encryption Standard) 256 Revision 6 with Unicode (non-Roman characters) password support. This feature has support in any .NET application built using Windows Forms, WPF, ASP.NET (web forms, MVC, and Core), plus UWP, Xamarin.Forms, Xamarin.Android, and Xamarin.iOS.

As per Europe’s GDPR 2018, it is mandatory to protect customers’ data. The Syncfusion .NET PDF library helps you to protect your PDF containing customers’ data by encrypting with the latest standards.

Encryption Standards

Syncfusion Essential PDF provides support for basic to advanced encryption standards:

  • RC4 40-bit and 128-bit
  • AES 128-bit, 256-bit Revision 5 and 256-bit Revision 6 (PDF 2.0)

Protect with Owner Password

The owner or master password is used to change the password and to set or restrict access rights of the PDF document. Owner password is necessary to open and view PDF document.

Protect with owner password

Protect with user password

Protect with User Password

The user or open password is required to open and view PDF documents with allowed permissions. Only PDFs with user password are safe from cracking.

Document Permission

By customizing the permission settings, you can allow or restrict users from performing certain actions such as content copying, printing, editing the document, filling form fields, and more. In addition, it is possible to change or remove PDF permission and password.

Document Permission


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File Formats

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One developer per license

Developer Platform

Essential Studio

$ 1,995

One developer per license


Unlimited Global License

Cover everyone in your organization for one low annual fee

1,000+ web, desktop, and mobile controls
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File Formats (Word, Excel, PowerPoint, and PDF)
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Support within 24 hours on all business days
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Coverage Period
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Syncfusion’s file format components helped me create the reports I needed, fast. – J. Pereira, Software Developer.

The libraries have been built from scratch and refined for more than a decade to provide blazing-fast performance, comprehensive API, and compatibility across the latest and older versions of these files.

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Syncfusion File Format Libraries - Manipulate Excel, Word, PowerPoint, and PDF files

Read and write Excel, Word, PDF, and PowerPoint files. Also includes integrated visualization capabilities. Advanced features include support for pivot tables, pivot charts, mail-merge, and extensive formatting.


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Succinctly Series: Statistics Using Excel Succinctly

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