amp wasn't just stripped down HTML either, it was a mix of restricted HTML and custom AMP components, the latter being necessary to load external resources (bre

amp wasn't just stripped down HTML either, it was a mix of restricted HTML and custom AMP components, the latter being necessary to load external resources (breaking standard browser preload scanners and requiring amp's js to load before that could happen). The banned HTML elements (https://amp.dev/documentation/guides-and-tutorials/websites/learn/spec/amphtml#html-tags https://amp.dev/documentation/guides-and-tutorials/websites/...) included img, picture, video, audio, iframe, all replaced with equivalent amp components.