Overall, there are two types of rendering—server-side and client-side—which differ in exactly where and how the rendering occurs.
Server-side rendering has always been the “traditional” means of rendering a web page; it is what most think of when they imagine rendering. In server-side rendering, the computer requesting the web content (the web browser) receives the page with most of its rendering already completed by the computer storing it (the server). All the requesting computer must do is download the CSS file to complete the cosmetic adjustments; the bulk of the rendering work has been done.
What web developers should take from this is that it is crucial to test-run their websites before putting them online, especially if they are using client-side rendering. If there is any kind of error that could affect the rendering, it must be detected and corrected before Google sees it. It would be better to rewrite a thousand lines of code than put a single website online that gets a poor ranking.
Another technical factor that developers must consider is the fact that Googlebot is not designed to be a browser. Certainly, it shares some characteristics with Chrome, but its ultimate purpose is far removed from a typical browser. In order to efficiently complete its tasks, Googlebot only retrieves the most relevant files from the web—what it considers essential for rendering.
Furthermore, Chrome 41 is compatible with numerous other tools that a developer can use, such as the Rich Results and Google Mobile tools. Both of these cover the gaps in Chrome 41’s testing functionality. They also allow users to view their sites from both mobile and desktop perspectives.
In addition to the above points, there are a number of general methods that web developers can make use of. With these as guidelines, web developers have a better chance of avoiding errors that could negatively impact their site’s ranking.
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