Encrypt PDF .NET | C# PDF library | Free Eval

DynamicPDF Merger is a .NET library that gives developers the ability to add PDF functionality to any .NET application. Merger’s easy to use API gives you the programmatic, on-the-fly ability to Create, Form Fill, Merge, Append, Split, Encrypt (Password Protect), Watermark, Secure, Stamp, Rotate, Scale, Join & Combine your PDFs and so much more! With a Free Evaluation Edition to try and with flexible and Royalty Free licensing options, why not start using DynamicPDF Merger Today!

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Feature Highlights

Merge, Append, Split, Encrypt, Watermark, Secure
Stamp, Rotate and Scale PDFs
Fill and flatten PDF form fields
Extract text from PDFs
Includes Generator(Create PDF files from scratch)

Encrypting a PDF in .NET

The following C# code shows how to encrypt a PDF document within your .NET application. To encrypt a PDF file you only need a few lines of .NET code.

Encrypting a PDF in .NET

// Open the PDF using MergeDocument class.
MergeDocument document = new MergeDocument(@"Needs Security.pdf");
 
// Create a security object.
Aes256Security security = new Aes256Security("owner", "user");
security.AllowCopy = false;
 
// Apply the document security.
document.Security = security;
 
// Save the encrypted PDF.
document.Draw(@"Encrypted Output.pdf");

Encrypting a PDF in .NET

The following C# code shows how to encrypt a PDF document within your .NET application. To encrypt a PDF file you only need a few lines of .NET code.

Encrypting a PDF in .NET

// Open the PDF using MergeDocument class.
MergeDocument document = new MergeDocument(@"Needs Security.pdf");
 
// Create a security object.
Aes128Security security = new Aes128Security("owner", "user");
security.AllowCopy = false;
 
// Apply the document security.
document.Security = security;
 
// Save the encrypted PDF.
document.Draw(@"Encrypted Output.pdf");

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Features

Below is a list of some of our highlighted features. For a full list of features please review our Full Feature Chart.

Feature Highlights
Merge, Append, Split, Encrypt , Watermark, Secure, Stamp, Rotate and Scale PDFs
Fill and Flatten PDF form fields
Extract text from PDFs
Includes Generator (Create PDF files from scratch)
Add digital signatures, encryption, barcodes, charts & much more
HTML and image conversions
Simple object model
.NET Framework 2.0, 3.5 and 4.x
.NET Standard 2.0 (.NET Core, Mono, UWP, Xamarin.Android and Xamarin.iOS)
Flexible Licensing - Server & Developer (royalty free)
Page Elements (Over 80)
Label, Page Numbering Label, Link, Note, Text Area and HTML Area
Image, Background Image, Bookmarks, Outlines, and so much more
Security and Encryption
Digital Signatures and Certificates
RC4 40-Bit and 128-Bit Encryption
AES 128-Bit and 256-Bit Encryption
Fonts and Text
14 Core Fonts, 7 CJK Fonts, Open Type and True Type fonts
Character Shaping, Font Kerning, Font Tracking, and so much more
Acro Form Fields
Button, Check box, Combo box, List box, Radio button, Text field
PDF Input
Import existing PDFs from a File, Byte Array or System.IO.Stream
PDF Output
Save to File, Byte Array, System.IO.Stream, System.Web.Page

Encrypt PDFs using a .NET SDK and C#

Feature Highlights

Encrypting a PDF in .NET

Encrypting a PDF in .NET

Features

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