Turn your visitors into customers with CRO

Keep growing your business through continuous, data-driven conversion rate optimization.

Grandimize, founded by Paul van Aalten, helps SMEs optimize their websites through an online course, growth trajectories and consulting.

CRO services

🤝 Leave it to a specialist

Work directly with an experienced conversion specialist. I analyze, test, and improve your website to increase conversions. You get expert CRO without having to learn and manage the process yourself.

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Online course

🎓 Learn to do it yourself

Follow the Grandimize! online course and learn step by step how to optimize your website for more conversions. At your own pace, using the same principles and methods I use as a conversion specialist.

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A client's experience

"Thank you Paul for helping me bring clarity and direction to my website at a moment when I really needed it. I knew something wasn’t quite landing, but I couldn’t fully see what needed to change. Your perspective helped me step back and understand how my website is actually experienced by the people visiting. What I appreciated most is that you didn’t just suggest improvements — you helped me think differently about my messaging and how to communicate what I offer in a way that feels clear and aligned. I now feel much more confident moving forward and growing my business in a way that feels both strategic and authentic. I’ll definitely recommend your services to my partners and clients."

Zu Solares

Bloom Within

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Paul & Grandimize

I discovered conversion optimization while working in digital marketing at startups and larger companies. What started as a broad interest in how websites could perform better gradually became my specialization. Over the years, I learned from experience and extensive training, including at CXL Institute.

In 2026, I started Grandimize to help SMEs grow through CRO. I also decided to make the knowledge I’ve gained accessible to small businesses through the Grandimize! online course.

What I enjoy about optimization is figuring out what holds people back and finding ways to make things work better. I think it’s great to share this perspective and approach with others.

Paul van Aalten
Conversion Specialist, based in Amsterdam

CXL certifications | LinkedIn profile

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