There are two types of plugins in the marketplace. For the sake of simplicity, lets call them binary plugins and Lua plugins,
Binary plugins are compiled for specific platforms, such as Android or iOS. The Nano SVG plugin is a prime example of this., What runs on Windows won’t run on a Mac. It’s a compiled C++ program.
These plugins do not work for HTML5. We never got around to building a system of building C++ plugins for HTML5. Other plugins that are device specific (they have iOS frameworks or Android/Java .jar files) only work on those OS’s and would never work for HTML5. This is why there are no ad plugins for Windows or macOS.
There are Lua based plugins which should work for HTML5. In the Marketplace it should say what platforms it’s available for.
But the binary plugins are not going to work with HTML5 builds. The JavaScript plugins are a different thing.
Rob