Agency Founders & Specialists

Joost de Valk

Founder of Yoast

Last updated 2026-07-23

Joost de Valk is the founder of Yoast, the company behind the widely used Yoast SEO plugin for WordPress. More than any single tool in the industry, Yoast has probably done the most to bring on-page SEO to non-specialists.

Quick facts

Role
Founder of Yoast
Based in
Netherlands
Experience
15+ years in SEO
Known for
Creator of the Yoast SEO plugin
Focus areas
WordPress SEO, Open Source, SEO Accessibility
Known clients
Millions of WordPress site owners

What Joost de Valk is known for

The Yoast SEO plugin is installed on millions of WordPress websites and turns core on-page tasks — meta tags, schema, readability, breadcrumbs — into something the average site owner can actually maintain. Joost is also a long-time contributor to the WordPress open-source project itself.

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