
Schema Markup and AI in 2025: What ChatGPT, Claude, Perplexity & Gemini Really See
8 Tests with 5 AI Systems show:
JSON-LD is ignored — but Google indexes JavaScript correctly!

8 Tests with 5 AI Systems show:
JSON-LD is ignored — but Google indexes JavaScript correctly!

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.

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.

Have you ever wondered if you can implement hreflang with Google Tag Manager? This post explains how to do it in three easy steps.

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!