Google’s Gary Illyes said at PubCon that they are able to fully render 98% or more of the web pages they crawl. With that he also added rendering takes longer than normal crawling and indexing. He said it can take days to a few weeks to fully render a page from the time it was crawled.

I do not believe this is new but I wanted to clarify that you do not need to think Google is slow at crawling, indexing and ranking content. Google still does that fast but it does take a bit more time for Google to fully render the page after doing all of those steps.

I believe Gary brought this up because after he talked a bit about the new dynamic rendering documentation they released and suggested those that need faster rendering should look into this.

The more complex JavaScript – the longer the rendering time.

Forum discussion at Twitter.