Foxit PDF SDK 7.3

Foxit PDF SDK 7.3 comes with loads of new features and enhancements. In our desktop SDK we’ve added support for new APIs for printing like CMYK support for graphic objects as well as Word/Excel to PDF conversion, and much more below.

For mobile, we’ve enabled group annotation creation at the UI level, enhanced e-ink screen rendering along with support for the new Mac Catalyst platform.

On the Web viewer side, we now offer progressive rendering, upgrades for digital signatures, a new API to get advanced font information and Web performance enhancements to get the most out of PDF SDK.

New in PDF SDK 7.3

CMYK support for graphic objects

Add custom colors with options for what percentages of each color you wish to create. This is perfect for keeping your coloring consistent across different devices when printing with CMYK coloring too. 

Digital Signatures for Web 

PDF SDK for Web now comes with full digital signature support. This update provides you with the ability to add certificate-based signatures and enables you to use the signature callback to send a signature request directly to the server, which result can also be verified by the viewer. Sign PDFs in a web browser with ease while having full support for your security protocols, and never have to print out a file or contract for signing again. You can access the demo for digital signatures here.

Support for Group Annotations at UI level

Take a look at the Android and iOS videos below to see how our new group annotations feature works:


Word/Excel to PDF conversion add-on 

With Word/Excel to PDF conversion, all you need to get started is Microsoft Office installed on your machine. Enjoy a host of document workflow benefits with this add-on including better document portability, image/graphics consistency as well as more free space on your server in the latest version of PDF SDK.

For a detailed list of all PDK SDK 7.3 updates, check out our changelog here.



With the newly added API PDFDoc.getFontsInfo() you can find out whether or not a font is embedded, bolded/italicized, the font’s family name, base font name, full font name, and its type. This makes it easier for you to maintain consistency across your documents.


You can now bring your iPad application to Mac with PDF SDK. Save time and add convenience while also optimizing your apps with this newly supported platform.

AngularJS, React.js and Vue.js on PDF SDK for Web

With the official plugins for AngularJS, React.js and Vue.js frameworks in PDF SDK for Web, you have more reliable and consistently optimized plugins for your applications. The projects will be provided out-of-the-box in your download package. All of the new functionality available with our SDKs for these frameworks as well as sample code and demo projects will be developed and maintained in the official plugins, so make sure to evaluate and use those projects on your applications for easy version backward compatibility.


We’ve updated Vue.js/AngularJS/React.js documentation to include merged-addons, as well as updated error code enumerations in the API references. View our updated documentation here.

PDF SDK for Web has also been fully revamped and the full developer guide is available here.


We’ve created a changelog for PDF SDK that details the updates from 6.x onwards. Take a look at the changelog here.


We’ve added new demos on how to optimize larger file support for the QT UI demo, JavaScript Page Open action support and a new digital signatures demo for Web to show you how to get the most out of our new features. Download our SDK here and take a look.