Pioneers of Conversion Rate Optimization and Digital Experimentation.

At Online Dialogue, we have been steering businesses towards remarkable growth since 2009, leveraging our deep industry experience and innovative approaches to redefine the digital landscape. Awarded the Best Agency of the Year at the Experimentation Elite Awards 2023, we bring a meticulous blend of consumer psychology and pioneering strategies to facilitate unparalleled success in your ventures.

Unlock the Power of Conversion Optimization

4-week intensive live course, 3 hours per online session – From beginner to advanced, learn directly from the leaders in CRO!

Discover our trio of bespoke services crafted to nurture your business:


1. Optimize Your Conversions with our Award-Winning Team

Submerge in the expertise of a team that harmoniously integrates consumer psychologists, analysts, researchers, designers, and developers to foster exponential growth in your conversion rates. At Online Dialogue, our unique approach guarantees significantly higher win rates. Our knowledge base has over 10K of industry-wide A/B experiments.

  • Award-winning team recognized globally;
  • Consumer psychology-backed strategies;
  • Superior win rates and experience with all main A/B test tools.

2. Build a Robust Experimentation Program Tailored for Your Organization

Advance to new heights with a structural and cultured experimentation program that mirrors your organizational goals perfectly. We stand beside you, sculpting from your existing framework to a level of unprecedented maturity, aiding with unmatched resources at each step.

  • Tailored programs aligning with your organization’s vision;
  • Assistance from conception to maturity;
  • Resource facilitation at every step.

3. Equip Your Team with CRO Skills from the Industry's Best

With the Online Dialogue Academy, immerse your team in a learning experience like no other. Choose from remote or in-house training modules that cater to an array of expertise topics in the field of CRO and experimentation, sculpting professionals who are adept and ready for the industry’s evolving demands.

  • Flexible learning modules – remote or in-house;
  • Comprehensive curriculum covering extensive CRO topics;
  • Training from the experts in the industry.

Our seasoned team, rich heritage in CRO, and an array of bespoke services designed for businesses at every scale ensure that with Online Dialogue, you are always one step ahead in the industry.

Let us foster a partnership grounded on growth, innovation, and success.

Our clients & testimonials

We are incredibly proud of the clients we get to help at Online Dialogue. These are wonderful brands that understand that you have to keep on improving day after day to be able to make your visitors and customers happy. Our clients are located worldwide, and our experience in remote collaboration is strong. We also meet locally with our clients when needed. We have optimized digital channels in many languages. From German to French, Spanish to English, and Swedish to Dutch. Online Dialogue operates from the European timezone.

online dialogue
“We collaborate with Online Dialogue because they also incorporate the entire aspect of psychology. This way, you look more at insights, instead of just raw data.”
Analytics & CRO @ VodafoneZiggo
“We approached several agencies to establish CRO with us at Hallmark. Online Dialogue emerged as our favorite by far! We have not regretted this choice for a single second.”
CRO @ Hallmark
“The collaboration with Online Dialogue went very well! It truly felt like we gained a few new colleagues.”
Head of UX @ Beerwulf

Elevate Your Business with Online Dialogue: Your Trusted Agency

In a landscape where the dynamics of online business are ever-evolving, your organization requires a partner that not only understands the intricacies of the digital space but can also steer you towards groundbreaking success. Online Dialogue is a seasoned agency boasting a rich history of bolstering the CRO and experimentation efforts of various reputable organizations. But why choose Online Dialogue as your go-to CRO and Experimentation agency? Our case studies provide the answer:

Cultivating a Winning Strategy: The Beter Bed Transformation through Online Dialogue’s Expertise

Explore Beter Bed’s evolution into a CRO powerhouse, winning the prestigious DDMA Dutch CRO Award in 2022 through a long-standing partnership with Online Dialogue.

  • Award-Winning Strategies: Crafting strategies that not only enhance business performance but also earn industry accolades.
  • Data-Driven Vision: Transitioning from ad-hoc testing to a structured, data-driven approach that prioritizes essential business facets.
  • Empowerment and Skill Transfer: Building a stronger in-house team through continuous learning and skill transfer, fostering a culture of self-sufficiency and innovation.

Hallmark's Data-Driven CRO Journey: A Year in Review

Discover the initial year of Hallmark’s CRO journey, where rapid experimentation met data-driven insights to foster a culture rich in innovation and grounded in customer feedback.

  • Dynamic Growth through Rapid Ideation: Hallmark initiated 2 to 3 new experiments weekly, illustrating a vibrant and swift growth trajectory empowered by data.
  • Cross-Departmental Synergy: Leveraging innovative tools and collaborative platforms, Hallmark fostered a workplace where every voice matters, enhancing website improvements through shared expertise.
  • Tailored Development Strategy: Incorporating a front-end developer into the CRO team for adaptive and streamlined optimizations, facilitating unified objectives and harmonized team efforts.

Mastering CRO Excellence: DPG’s Accelerated Growth with Online Dialogue

Delve into DPG’s meteoric rise to becoming a CRO leader, leveraging Online Dialogue’s expertise to be nominated for several Experimentation Awards in 2023.

  • Award-Garnering Tactics: Developing tactics that bolster business outcomes and secure industry recognition.
  • Informed Strategic Evolution: Shifting from sporadic experiments to a systematic, data-centric methodology, focusing on vital business aspects.
  • Knowledge and Skill Enrichment: Enhancing the internal team’s prowess through ongoing education and skill transfer, encouraging a setting ripe for innovation and self-reliance.

Work with Online Dialogue

We’re a unified team, driven by a shared vision and a boundless passion for innovation. Leveraging insights from behavioral psychology to user experience, we are masters in cultivating a data-driven culture and spearheading CRO initiatives. Beyond guiding you to optimization, we empower you to become experts in the field, sharing the wealth of knowledge amassed from international stages. Let’s not just talk about the future—let’s create it.

Meet the Online Dialogue team

Ronald Peters


+3130 2272 442

Lotte Cornelissen

+3130 4100 178

Eddy Morreau

+3130 4100 179

Reinier Koolmees


+3130 7009 777

Desiree van der Horst


+3130 227 2441

Ruben de Boer


3130 227 2441

Pim Molenaar


+3130 2272 448

Laura Mensink


+030 2272 444

Shirley van Haalem


+030 7009 447

Sanne Maarsingh


+030 4100 171

George Onderdijk


+030 2272 449

Irene Strikkers


+030 7009 775

Isabella Klaassens


+030 2272440

Foto Alexandros
Alexandros Kakakis


+030 4100 177

Niels van der Leeuw


+030 4100 175

Marrissa afbeelding
Marissa Ham


Founding partners

Ton Wesseling
Bart Schutz

Work with Online Dialogue

Fill in the form below and we will contact you as soon as possible or call us (+3130 4100 170).

Online Dialogue - Sint Jacobsstraat 31, 3511 BL Utrecht, The Netherlands - +3130 4100 170