What is rendering?
A visual representation on a website is calculated by rendering on the basis of specific data. In order to present a 3D graphic in high resolution, the file must first be rendered. How long the rendering takes is referred to as the render time.
What is the importance of rendering for SEO?
The rendering time is an important SEO feature. It provides information on whether performance is good. If the render time exceeds 3 seconds, there is a conceivable risk of users bouncing prematurely.
A long image loading time means a short dwell time and a high bounce rate. And this must be prevented. Google rates websites in terms of bounce rate and dwell time. If the performance is not right, this will result in a poorer ranking.
SEOs must try to keep loading times and render times as short as possible. It may be possible to make the source code leaner. The outsourcing of CSS or JavaScript elements should be considered here.
There are various rendering programs that can be used to check the crawlability of the website. This allows you to find out whether everything is in the green zone or whether there is potential for optimization.
Of course, loading times, dwell time and bounce rate are not the only important factors for a good ranking. Content with added value and high-quality links are also unavoidable. Everything must be coherent and harmonize in order to achieve a good ranking.