Source Code for viewing PDF files in HTML view without loading an external viewer!

Hi!

I am working on a custom browser which allows the user to view PDF docus in HTML view without loading an external viewer apart from other functionalities . The browser has been coded in C++ but i am not sure about displaying the docus in HTML view. I am essentially looking for some libraries which allow me to achieve this!. I am aware of the various converters available online but that is not my requirement. This ability has to be a part of the browser itself(part of the source code).