At I/O 2018, Google announced that they didn't use canonical tags that can only be found in the rendered HTML and not in the HTML source document. Our test results suggest that this statement was not true.
December 14, 2017
Learn how to change title tags, meta descriptions, noindex, canonical tags and internal links with Google Tag Manager and how Google deals with these changes.
Learn how we trained a machine learning algorithm to find keywords with high ranking potential by predicting positions after on-page optimisations.
We wanted to know if Google uses pre- or post-DOM HTML for interpreting hreflang, so we did an experiment. See the surprising results here!