The new api.kde.org page style looks clean and uncluttered, but unfortunately the links which used to lead to the module source are no longer present. See for example an old style page at https://api.kde.org/legacy/plasma/plasma5support/html/classPlasma5Support_1_1DataEngine.html which has, at the bottom of the page: The documentation for this class was generated from the following files: dataengine.h dataengine.cpp where each file name is a link to a HTML-formatted version of the source file. Also, in the page body, each class or name has a link: Definition at line 53 of file dataengine.cpp. where the line number is a link to the exact location in the source file. Please consider reinstating the formatted source pages and the links to them - they were most useful when needing to quickly check the actual implementation.