http://tools.parstools.com/rss/site.php?url=https://www.smart-iphone-recovery.com/2021/05/29/rwfeds/

This is display.cgi (source). It takes some text you enter into a form, and displays it for you as HTML. This is a great way to see how some HTML code looks in your (or someone else's) browser. So paste 'n go: