In a Search Central Lightning Talks video, Google Developer Relations Engineer Martin Splitt explains how source HTML can differ from rendered HTML, and how this can impact your SEO.
He asks, at the beginning of the video: Did you ever inspect the source of a website and wondered why it looks different from what you see in your browser when you open the same website?
Or perhaps you heard about the rendered HTML or the DOM and don’t know how these are different from what you see in view source, for instance, then this video is for you.
He talks about the following:
- The very beginning of the document loading process as you hit return in the address bar,
- HTTP requests to the server hosting the website,
- How the server processes and responds to the HTTP request,
- Why people think what the original source in the browser is what matches what’s on the page,
- How the browser prepares and displays the original source into the rendered source,
- The differences between the source HTML, the rendered HTML, and how the DOM plays into this rendering process,
- Where the DOM lives and how it relates to the processing of the document,
- and much more.
We highly recommend listening to this podcast if you care at all how much your source HTML and rendered HTML code can impact your SEO efforts.