YellowFrog B.V.

Based in Venlo in the Netherlands, this small team works with businesses in both the Netherlands and Germany that want to build organic visibility rather than chase quick wins. The agency positions itself as a specialist in search engine optimization combined with newer AI-driven search visibility, aiming its work at companies looking for a long-term, process-based approach to rankings, leads and traffic rather than one-off projects. Team size is small, and the company frames its work around transparency, showing real KPIs and ranking developments instead of unverified claims. Service areas include OnPage, OffPage and technical SEO built on a clean technical foundation, alongside what the agency calls "KI-SEO/GEO" — optimizing brand presence within AI answer engines such as ChatGPT, Perplexity and Gemini, not only classic search listings. Additional offerings cover Google Ads (SEA) campaigns described as data-driven and tied to measurable leads and revenue, content marketing focused on matching search intent, and website and webshop development built with conversion and SEO considerations from the outset. Native advertising placements within editorial environments are also offered. The agency also lists API development, affiliate marketing, e-commerce development and public relations among its services. Tools mentioned as part of its working setup include Sistrix, Google Analytics, Screaming Frog, Google Search Console, Google Ads, Majestic, Zapier, OpenAI and Claude, reflecting a mix of established SEO analysis tools and AI-related applications.