Load time optimization basics

What can at all being optimized at the load time? Basics for the load time optimization of web sites. How is the load time defined

Wrong optimization

Wrong optimization goes on quality. Smaller pictures, worse quality by strong JPG compression. Forget this nonsense!

Visitor sees content

At the load time optimization, the theme is the time, the visitor has to wait until he sees useable content. Not at all the time to load the whole web site, but the time until the visitor has something from the visit of the site.

Typical built up of a slow web site

A slow web site loads JavaScript and CSS files in the <HEAD>. section. SoTherefore,More... the browser is blocked to render the page until all JavaScript and CSS are loaded.

Dummy Javascript for a fast load time
	In the HEAD section is no JavaScript loaded. The load of the JavaScript occurs only at the end of the page. To bridge this time are in the HEAD short dummy functions.

Load time optimization by CSS Cascading Style Sheets
	Already with the first 4 received TCP/IP package, the browser should be able to render the most important contents of the web page. Optimization step CSS.

Load the background graphic later
	In 99% of the cases, the background graphic is not the most important to deliver as quick as possible to the visitor. The load time of other elements is more important.

Load time optimization: Content first
	Now we have learned all measures, in order that rendering the web page can start with the first 4 TCP/IP package from the server. But what should the browser do with it?

Load time test
	Erase the cache and after this far far away from the next cellular station visit the web site. Document the load with a video.