At Online Dialogue we work with a specialized team of experienced experts in the field of User Experience, Psychology, Analytics, Optimization and Strategy. 

By combining multiple disciplines and quickly iterating between them, an experienced team wil work on reaching just one goal: increasing your conversions.

Many or few visitors / transactions? That does not matter to us. Data-driven optimization can always be applied.

We optimize your conversion

  1. Conversion Optimization - We use AB-testing, growth-hacking and other techniques to validate ideas and marketing insights. All activities are based on data and the deep understanding of the psychology behind why people buy or convert. We use our in-house developed processes to come to unique experiments and great results. 
  2. Conversion Intelligence - Knowledge on customer behavior is one of the least developed areas in online marketing. We, however, see this as one of the most important areas in the validation process. Together with our clients we try to understand their customers. Our data scientist starts with analyzing data. Our conversion specialists and behavioral scientists use this data and come to conclusions and recommendations. The results of this process are presented in our Behavioral Intelligence Grid (BIG).
  3. Conversion Culture - We help our customers to embed validation in their organizational culture. We set up teams, structure and start processes around experiments, use workshops to share knowledge, and help with stakeholder management. Primary focus is to create Operational Excellence in validation. All in order to let organizations grow in their knowledge, people and business.
  4. Conversion Academy - We want to spread the word (and knowledge). At our academy you can learn all about optimization. From using tools, statistics, UX-design and being data-driven to optimizing on the basis of psychology.

Our business is built on 4 pillars:

Data and Psychology for Growth and Innovation

We see “validation in every organization” as our mission and it is our job to help our customers in making better and faster decisions. To fulfill our job, we make use of (web) data and psychology in combination with business consultancy and change management. Together with our customers we are looking at sales funnels, customer journeys, customer behavior and company culture. 

We have been doing all this for almost ten years to improve conversion rates for websites and mobile devices. We are a niche player since we are only focusing on optimization and behavior and because of this focus we are specialists in the marketplace. We do not perform other marketing activities like SEA and SEO and we are often considered as Thought Leader in the field of Validation. 

We have been organizing events like Conversion Hotel (a three-day conference on Texel), Dialogue Donderdag (inspiration sessions for customers) and Digital Data Tuesday Tips (knowledge sessions for professionals). 

We are asked as keynote speakers on international events on a regular basis and it is in our blood to share our experience with everybody. We are for example the founding father of the A/B-Test guide and the owner of and Wheel of persuasion.

Want more information?

Optimization is a core competence for online businesses. The daily work has shifted from managing to continuous data driven optimization. And we will teach you how to do it. From using tools, to optimizing on the basis of psychology. We do this at our office, on location or in your company.

Do you want to become an expert in convincing, guiding and converting your customers online? In the 'Master of Online Persuasion' course we will dive into the functioning of the consumer brain. This way you learn to recognize the behavior of your visitors in order to optimize your website.

The "Master of Online Persuasion" is an English online training, complete with learning environment, exam and certificate.


Master of Online Persuasion

We are extremely proud of the customers we get to help as Online Dialogue. Wonderful brands that understand that you have to keep improving day after day in order to make your visitors and customers happy. In addition to individual projects, we work for organizations that we have been able to count to our loyal customer base for more than 5 years.


Hostelworld Casestudy: A trip in CRO, the journey of Hostelworld

Hostelworld works from an agile approach that stimulates a test and learning environment which makes improvements and learnings possible. In recent years, the collaboration between Online Dialogue has ensured that this approach was also implemented in the optimization of the Hostelworld websites.

In the case study, we show how Evidence Based Growth takes the knowledge of the Hostelworld customer to a higher level.

More and more CRO teams are looking for new ways to take their CRO program to a higher level and even more new tools promise to make our work more efficient and profitable. Yet from a technological point of view, it has been a while since a disruptive tool entered the market. Until Sentient Ascend made her appearance.

In the spring of 2017 we took up the challenge and received Sentient Ascend with open arms for a proof of concept.

Casestudy Euroflorist: Massive Multi Variate Testing with the Sentient Ascend AI software

In recent years we have been able to cooperate with many different types, but always enthusiastic and inspiring customers. We are happy to share the best cases.


Online Dialogue is an international player and thought leader in the online optimization market. All colleagues share the same vision and working methods and carry out their work with a lot of passion and enthusiasm. Our expertises are behavior analysis, online design, optimization and learning others how to optimize.

Besides doing Conversion Optimization, we love speaking about it. Many of our colleagues have experience with public speaking on international stages. Check out our speakings skills here,


Bart Schutz - keynote for Conversions @Google 2017 (Dublin, Ireland)

Ton Wesseling - Keynote for NIO Summit 2017 (Texas, USA)

Please accept statistics-cookies to watch this YouTube video of Bart Schutz or go directly to the YouTube website and watch it over there
Please accept statistics-cookies to watch this Vimeo video of Ton Wesseling or go directly to the Vimeo website and watch it over there


tel.: +3130 4100 170


Chamber of Commerce: 302 68 397

IBAN: NL60 RABO 01513 29 451


Address: St Jacobsstraat 31, 3511 BL Utrecht, The Netherlands

Click here to read our route description

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 tel: +31 30 2272442


Online Dialogue is easily accessible, just a 400 meters walk from Utrecht Central Station, just outside Hoog Catharijne and with a parking garage around the corner.

Route description

Traveling by car? The nearest parking garage is Q-Park La Vie. If you leave the parking garage at street level, you will find our building on the left. Our address is Sint Jacobsstraat 31. You will find us on the third floor.

By car

Upon arrival at Utrecht Central Station, you walk across the station square into shopping mall Hoog Catharijne. Follow the route to the left towards Vredenburg. Once on Vredenburg square (just outside the mall) you cross the square towards the Esprit store and the KFC and go left towards De Bijenkorf. Cross the street at the traffic light and walk along the left-hand side past the main entrance of the Bijenkorf into St. Jacobsstraat. The entrance to our building is on the right-hand side of the street, 30 meters from the main entrance of the Bijenkorf. Our address is Sint Jacobsstraat 31. You will find us on the third floor.

By public transportation

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