Earlier this year, Sander Nagetegaal from Centrical.com did a series of experiments to find out if Google crawls dynamic content. What did he find out and what does this mean to the Google rankings of your own website?
What did he test?
- Content injection before DOM has loaded
- Content injection after DOM has loaded
- Content injection after httpRequest
- JSON-LD content
- JSON-LD injection
- JSON-LD injection, asynchronously
- JSON-LD injection after httpRequest
- JSON-LD injection with Google Tag Manager
- Meta elements injection
- Meta elements injection, asynchronous
What did he find out?
Sander Nagetegaal found out that Google crawls and
indexes all content
asynchronously injected. However, JSON-LD
content fails to show up in the search results. Here
are his results:
- Google even shows results in the SERPs that are based on asynchronously injected content.
- Google can handle content from httpRequest().
- However, JSON-LD as such does not necessarily lead to SERP results (as opposed to the officially supported SERP entities that are not only indexed, but also used to decorate the SERP).
- Injected JSON-LD gets recognized by the structured data testing tool – including Tag Manager injection. This means that once Google decides to support the entities, indexing will not be a problem.
- Dynamically updated meta elements get crawled and indexed, too.
What does this mean to the rankings of your own website?
Two months ago, Google discontinued its supports for its previous proposal to make AJAX web pages crawlable by Googlebot. As the experiments above show, Google can index the content anyway now.
In addition, the tools help you to make sure that potential customers find your website through the right keywords. If you haven’t done it yet, try SEOprofiler now: