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Premier PDF SDK Tools

Easily add PDF functionality to your application or workflow. Used worldwide for over 20 years, ActivePDF’s fully-supported PDF C# .NET SDKs are built for developers, by developers, and don't rely on external third party open source software.

Key Differentiators

High Fidelity PDF

Output crisp high fidelity PDFs every time with quality technology you can depend on.

Robust Functionality

Hundreds of methods and properties give developers the flexibility needed to create just about any PDF workflow or solution.

Speed & Efficiency

Fast native 32-bit and 64-bit code with a .NET wrapper is not slowed down by the Common Language Runtime (CLR).

Functionality

PDF Conversion

Implement native C# .NET PDF conversion to reliably convert PDFs to and from multiple file types such as text files, Word, Excel, DWG, HTML, images and more.

PDF Parsing & Extraction

Make searching and extracting data from PDF files easy. Use location coordinates and specify criteria such as extraction by words, invoice data and image formats in the PDF. Programmatically automate to build a database, edit, index and more.

PDF Form Fill

Create, manipulate and fill PDF forms in your app programmatically. Populate PDF form fields dynamically from a data source, XML data, or another form using C# .NET SDK. Allow users to precisely control the layout of reports generated from a database.

HTML to PDF

Convert HTML and URLs to and from PDF with C# .NET. Server-side HTML-to-PDF conversion from virtually any source while controlling PDF page size, metadata, compression and output resolution.

PDF Editor

Programmatically edit PDF files in C# .NET by adding text, images and annotations, as well as other editing tool functionalities.

PDF Encryption

Secure and encrypt your application PDF files using C# to support RC4 40- and 128-bit and AES 128- and 256-bit password encryption.

PDF Annotation

Embed PDF annotation functionality into any C# app to add, edit and delete annotations, such as highlights, notes, shapes, lines and signatures.

PDF OCR

Accurate, reliable and powerful C# .NET data capture software that enables developers to programmatically convert large volumes of PDFs and images into searchable text documents.

Print to PDF

Implement seamless virtual and server-based PDF printing in .NET C# for any Windows-based applications capable of printing paper.

PDF Digital Signature

Programmatically embed fully customizable digital signatures using .NET C# to improve your PDF document signature workflows.

PDF Redaction

Reliable and secure C# PDF redaction SDK enables you to remove or obscure specific words, text, images or entire pages, keeping viewers from seeing, searching or editing redacted data in the output PDF.

PDF Compression

Reduce PDF file size by subsetting fonts, compressing images and discarding user data. Automate at scale to make sending and receiving documents a breeze, whether through email, workstations, mobile devices, backend servers or other cloud deployments.

PDF Generation

Easily generate PDF and PDF/A files using ActivePDF’s globally vetted C# PDF generator SDK. Create and convert documents to and from PDF with powerful server-side automation.

PDF Manipulation

Powerful C# .NET PDF manipulation SDK tools designed for maximum PDF customization. Our PDF manipulation library allows for modifying text, images, annotations, watermarks, redaction, rasterization and more.

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Recent news

Debunking Common PDF Myths

Debunking Common PDF Myths

06 November 2019

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4 Things to Consider When Choosing the Best PDF Viewer and Editor Software

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