Documentation

Explore the docs

Select your platform

Windows

Developer Guides

API Reference

Web

Developer Guides

API Reference

Collaboration API Reference

PDF Conversion SDK

Developer Guides

API Reference

Mac

Developer Guides

API Reference

Linux

Developer Guides

API Reference

Android

Developer Guides

API Reference

iOS

Developer Guides

API Reference

ActiveX

Articles & Project samples

Latest release

Foxit 10.1

Foxit PDF SDK for Desktop 10.1.0 supports PDF/E and PDF/X standards in preflight checks, enhances the conversion workflows and OCR capabilities with the support of multi-threaded/multi-core processing and additional options, and improves the performance in document optimization and form file import processes. It also adds new APIs in modules like search, image processing, and text processing to deliver a streamlined workflow.

Foxit Conversion SDK 2.1.0 brings enhanced features to PDF2Office and Office2PDF, providing users with a more versatile and efficient document conversion experience. For PDF2Office, users can now convert the restricted PDF files and benefit from additional options to remove trailing spaces from the output, specify Excel workbook settings, and control whether to include images or insert page breaks during conversion. Office2PDF introduces the support for outline conversion in Word2PDF, and offers workbook conversion options in Excel2PDF.

Read the release page Read the release page
Solutions

Plug-Ins & Open Source

Cordova

Build native mobile (iOS, Android) apps with HTML, CSS & JS. Target multiple platforms with one code base on our mobile PDF SDK.

Learn More Learn More
Kotlin

Develop Android applications using MobilePDF SDK in Kotlin. Designed to work using Java, MobilePDF SDK can easily be integrated into your development process when working with Kotlin.

Learn More Learn More
React Native

Write with or create components using JavaScript code to develop Android and iOS applications using React Native.

Learn More Learn More
Xamarin

Build and deploy native Android, iOS and Windows apps, using existing skills, teams, and code in C# with MobilePDF SDK.

Learn More Learn More

WebPDF.JS

Develop a full-fledged PDF Viewer for browser environments, all with Javascript. Migrate from PDF.js and experience native-like performance.

Read more Read more
Explore further

Recent articles & project samples

Switching between the 32-bit and 64-bit ActiveX versions of Foxit Quick PDF Library (Visual C#)

Updated 16 May 2022
Foxit Quick PDF Library
The ActiveX edition of Foxit QuicK PDF Library includes support for 32-bit and 64-bit applications. To make it incredibly easy to switch between the 32-bit and 64-bit versions we provide a C# import file for the ActiveX editi...
Keep reading Keep reading

Setup C# and Visual Studio for use with the DLL edition of Foxit Quick PDF Library

Updated 16 May 2022
Foxit Quick PDF Library
This tutorial shows you how to get ready to create your first PDF application with C#, Visual Studio and the DLL edition of Foxit Quick PDF Library. C# can be used with the ActiveX and DLL editions of Foxit Quick PDF Lib...
Keep reading Keep reading

Setup C# and Visual Studio for use with the ActiveX edition of Foxit Quick PDF Library

Updated 16 May 2022
Foxit Quick PDF Library
This tutorial shows you how to get ready to create your first PDF application with C#, Visual Studio and the ActiveX edition of Foxit Quick PDF Library. C# can be used with the ActiveX and DLL editions of Foxit Quick PDF...
Keep reading Keep reading

Unit QuickPDFxxxx or FoxitPDFLibraryxxxx was compiled with a different version

Updated 16 May 2022
Foxit Quick PDF Library
Sometimes when upgrading a Delphi project to a new version of Foxit Quick PDF Library you may encounter an error message like this: Unit QuickPDFxxxx was compiled with a different version... The most likely cause of this erro...
Keep reading Keep reading

FindFormFieldByTitle finds extra form field that doesn’t exist

Updated 16 May 2022
Foxit Quick PDF Library
When calling the FindFormFieldByTitle it can sometimes find two fields with the same name. For example, in a PDF form there might be a form field with the title "Name_Of_Campaign". The PDF SDK will find that form field fine but it...
Keep reading Keep reading

Can I become an official reseller of Debenu products?

Updated 02 July 2013
Debenu PDF Viewer SDK Foxit Quick PDF Library
Yes, we have two different programs that let our loyal customers share in the success of Debenu. The first option is our official reseller program, which is for large resellers who primarily sell to corporations, and the second op...
Keep reading Keep reading

PHP and Windows with the ActiveX edition of Foxit Quick PDF Library

Updated 16 May 2022
Foxit Quick PDF Library
PHP developers can use the ActiveX edition of Foxit Quick PDF Library to add PDF functionality to their PHP websites running on the Windows operating system. Here's a quick guide on how to get up and running: The first thing you'...
Keep reading Keep reading

How can I programmatically detect color PDF files versus black and white PDF files?

Updated 16 May 2022
Foxit Quick PDF Library
One method is to render each page to an image file and then check each pixel for RGB values not equal to each other. If R=G=B for each pixel then it's a grayscale image. This should allow you to determine if a PDF file is color or...
Keep reading Keep reading

How do I create an InstanceID in Foxit PDF Library Lite?

Updated 16 May 2022
Foxit Quick PDF Library
Foxit Quick PDF Library Lite is an ActiveX and so does not require an Instance ID. The Instance ID is only required by the DLL edition of the commercial version of Foxit Quick PDF Library. In addition, you do not need to...
Keep reading Keep reading