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Hi! I’m Dennis Claassen.
I’m currently a lead developer at Yoast, leading 2 development teams. Each is part of a multidisciplinary squad, in which we focus on Yoast SEO for Shopify, and the Yoast.com website and MyYoast customer portal.
Continue reading on more about me. And if you want to get in contact or stay up to date with what interests me at the moment, the best places to find me are:
Latest posts
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How I built my YAML-powered Jekyll site
Maintaining a Jekyll site by extracting data into YAML files. How Dennis Claassen.nl was built on top of GitHub Pages and evolved to an SEO playground.
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History behind Dennis Claassen.nl
How Dennis Claassen.nl went from a LinkedIn-powered headless site, via a YAML-powered static site, to the overpowered WordPress site it is today.
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Add ProfilePage schema on your personal blog with Yoast SEO
ProfilePage schema allows Google to highlight details about an individual or organization, like their name, bio, and social profiles. Learn how to set this up for a one author blog with Yoast SEO.
For more posts, continue to the blog.
Latest events
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WordCamp US 2025
August 26 – August 29WordCamp US 2025 is a first for me. I’m representing Yoast, with a booth to run, people to meet, and plenty of curiosity about all things happening across the ecosystem.
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Editions.dev 2025
May 29 – May 30Returning to Toronto for the second editions.dev. There’s such an energizing atmosphere, I really enjoy hearing what new foundations Shopify is creating and what their partners are building on those.
For more events, continue to the calendar.