Content Security Policy (CSP) is a feature that helps to prevent or minimize the risk of certain types of security threats. It consists of a series of instructions from a website to a browser, which instruct the browser to place restrictions on the things that the code comprising the site is allowed to do.| developer.mozilla.org
HTML| html.spec.whatwg.org
The load event is fired when the whole page has loaded, including all dependent resources such as stylesheets, scripts (including async, deferred, and module scripts), iframes, and images, except those that are loaded lazily. This is in contrast to DOMContentLoaded, which is fired as soon as the page DOM has been loaded, without waiting for resources to finish loading.| developer.mozilla.org
HTML| html.spec.whatwg.org
Learn to optimize your pages for instant loads when using the browser's back and forward buttons.| web.dev
