A website and web pages development technology that allows to speed up the loading of mobile pages was launched by Google in 2015. AMP pages are marked with a ⚡ icon in search results.
Such pages have a number of limitations and are simplified as much as possible:
- part of the HTML tags are prohibited for use, and some are replaced by AMP tags;
- CSS file size limit – 75kb (previously 50kb);
- Google search engine loads and caches the AMP pages of the site during the indexing process and gives them to the user when searching from its server.