.jpg)
The large for the space where it is loaded. By immediately delivering an image in the used format, the image becomes smaller and thus also the file size. In this case it may save 5kb, but if you use large images it may well be that you can save 1 or more mob's. In addition, use a modern file format such as WebP. By using WebP, now supported by almost all browsers, images can be further compressed without loss of quality. It is important to always have a as a backup if a browser does not (yet) support Webby.
Tip 4: Optimize CSS files CSS is an essential part of a web page. Think of CSS as the skin of your body, it takes care of the design of a page. CSS is loaded using a CSS file. These things Singapore phone number list to files are often placed in the head of the page. As soon as a browser loads a web page, it starts fetching the code at the top and as soon as there is a CSS file in the code, the browser stops fetching the HTML code, fetching the CSS code first and then continuing with the rest of the page's code.
We also call this 'render-blocking', retrieving the CSS (and also JavaScript) ensures that the browser cannot continue rendering a page. Render Blocking The Chrome Retools coverage report shows what is needed to load the page for each CSS file. There is also a difference between critical CSS and non-critical CSS. Critical CSS is CSS needed for the visible elements of a web page. Non-critical CSS is needed for elements of a web page that are not directly visible. CSS is: be specific. It is recommended to create a basic CSS file for each type of page and load non-critical CSS later using a defer tag.