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Static Site Generators bridges gap between static HTML and dynamic sites (like Wordpress or Joomla) It provides better performance of static sites and we do not have to write HTML for content of our site. Static sites perform better and load faster because the page isn’t constructed at run time. Dynamic sites are easier with static sites as any URL will return same HTML content until and unless that file is updated by site owner. Static websites are obviously cheaper because we don't have to buy expensive server space. Static site generators are based on JAMstack, free and open source framework based on React.