Introducing Speed Demon Have you ever worked on your website performance, cheered as improvements were made, and rejoiced as the site got faster… only to discover, a few months later, that your site speed has regressed? Maybe your site is now slower than ever! People often use WebPageTest to test site speed. Give WebPageTest a URL, and it loads that web page on a real device and returns metrics on
![Test your site speed automatically with Speed Demon](https://cdn-ak-scissors.b.st-hatena.com/image/square/72a6725f89970f96805fef1b74d5bda99465a441/height=288;version=1;width=512/https%3A%2F%2Fmiro.medium.com%2Fv2%2Fresize%3Afit%3A939%2F1%2ATMDhRGv-fvfXmgY3Uk42Ng.png)