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.
It can take days for Google to render. Static HTML will get rendered the fastest. Rel canonical is picked up from static html. @methode #pubcon
— Jennifer Slegg (@jenstar) October 17, 2018
Google renders 98%+ of pages that they crawl. It can be slow, it can take weeks sometimes. via @methode #pubcon
— Barry Schwartz (@rustybrick) October 17, 2018
Forum discussion at Twitter.
