component WebDev AdminTabs h1.page-title WebDev .widgets .widget.mountable h3.widget-title Tests .buttons a.button.mountable(href="https://developers.google.com/speed/pagespeed/insights/?url=https://notify.moe/&tab=desktop", target="_blank", rel="noopener") Icon("external-link") span Google PageSpeed a.button.mountable(href="https://observatory.mozilla.org/analyze.html?host=notify.moe", target="_blank", rel="noopener") Icon("external-link") span Mozilla Observatory a.button.mountable(href="https://html5.validator.nu/?doc=https://notify.moe", target="_blank", rel="noopener") Icon("external-link") span HTML5 Validator a.button.mountable(href="https://testmysite.withgoogle.com/", target="_blank", rel="noopener") Icon("external-link") span Mobile Speed a.button.mountable(href="https://www.webpagetest.org/", target="_blank", rel="noopener") Icon("external-link") span Web Page Test .widget.mountable h3.widget-title Browser Support .buttons a.button.mountable(href="http://caniuse.com/#feat=webp", target="_blank", rel="noopener") Icon("external-link") span WebP a.button.mountable(href="http://caniuse.com/#feat=push-api", target="_blank", rel="noopener") Icon("external-link") span Push API a.button.mountable(href="http://caniuse.com/#feat=serviceworkers", target="_blank", rel="noopener") Icon("external-link") span Service Worker a.button.mountable(href="http://caniuse.com/#feat=intersectionobserver", target="_blank", rel="noopener") Icon("external-link") span Intersection Observer a.button.mountable(href="http://caniuse.com/#feat=requestidlecallback", target="_blank", rel="noopener") Icon("external-link") span Request Idle Callback a.button.mountable(href="http://caniuse.com/#feat=css-variables", target="_blank", rel="noopener") Icon("external-link") span CSS Variables