Would you like to win more customers from your website visitors?
Whether online store, lead form or request for quotation, every interaction is an opportunity for more sales. With targeted conversion optimization, you can turn significantly more prospective customers into paying customers.
In this overview, we present Germany's best CRO agencies. These partners make conversion optimization measurable, analyse user behaviour, specifically test new approaches with A/B testing and only implement what has been proven to work.
Use their expertise to realize your full potential and take your growth to the next level.
Table of contents
Why a CRO agency increases your success
Sometimes the right impulse decides whether a visitor to your website just drops by or becomes a customer. A good CRO agency knows how to target this impulse. Instead of relying on assumptions, they precisely analyze user behavior and identify the weak points that prevent potential customers from closing the deal. Using data-driven methods such as A/B tests, optimized user guidance and conversion-focused design, they ensure that your visitors are seamlessly guided to the desired conclusion.
The advantage of a specialized agency lies in its experience and its clear view from the outside. While internal teams are often operationally blind or juggle other tasks, a CRO agency brings fresh perspectives and tried-and-tested strategies. This makes sales processes more efficient, optimizes user experiences and ultimately generates more sales or leads - without spending additional budget on more traffic.
A good CRO agency will help you to exploit the full potential of your existing visitors and be more successful in the long term.
The top CRO agencies 2025
Find out which agency best suits your goals! We have selected the best providers who will turn your visitors into convinced customers and give your business a noticeable boost. Whether classic conversion optimization, specialized Shopify solutions or Google Ads experts: Here you will find the right partner for your needs.
The following agencies are listed in alphabetical order and do not represent an explicit ranking.
ABxpert is the only CRO agency in Germany with a clear specialization in Shopify Plus shops. The agency combines in-depth, data-based analyses with individually developed hypotheses that are specifically aimed at increasing sales.
Companies benefit from a structured optimization process based on comprehensive data collection, including heat maps, session recordings, web analytics, customer surveys, support tickets and interviews with the sales team. ABxpert also offers practical workshops and training courses to enable internal teams to optimize independently in the long term.
Focus of the services:
- Specialized conversion rate optimization for Shopify Plus stores
- Implementation and evaluation of A/B tests based on comprehensive data analyses
- Development of customized hypotheses to increase sales
- UX optimization for better user guidance and customer experience
- Workshops and training for internal CRO teams
Highlights:
With over 2500 A/B tests carried out and a proven additional turnover of more than 110 million euros, ABxpert has successfully implemented numerous customer projects. The specialization in Shopify-Plus makes it possible to combine technical excellence with targeted optimization strategies and thus sustainably increase the performance of online stores. A particular added value lies in the combination of data-driven analysis, clear hypothesis formation and practical knowledge transfer, which makes companies independent in the long term.
Benefit from the ideal combination of Varify.io® technologies and agency expertise.
Cogniteer. is the agency for companies that optimize their conversion rate and user experience (UX) through psychologically sound strategies. Under the leadership of Fabian Hans, an expert in business psychology, Cogniteer relies on data-driven user research, A/B testing and strategic consulting to achieve targeted and measurable results.
Thanks to an agile and iterative process approach, Cogniteer is particularly suitable for companies that want to continuously improve their digital presence. By applying behavioural psychology principles, in-depth customer analyses are combined with effective optimization measures.
Focus of the services:
- Psychological user research to identify user needs and motives
- A/B testing for data-based optimization of websites
- Strategic consulting for digital transformation and in-house optimization teams
- UX design for user-friendly and high-performance interfaces
- Workshops and training courses to impart CRO and UX expertise
Highlights:
For over a decade, Cogniteer has been helping companies to increase their conversion rate through psychologically sound strategies. These include clients such as Vergleich.org, ContentSquare, Vermietet.de from ImmoScout24 and Flightright.
A particular focus is on building inhouse CRO teams to make companies independent of external service providers in the long term. In addition, Cogniteer offers practical workshops and training to equip internal teams with the necessary know-how for successful optimization.
Benefit from the ideal combination of Varify.io® technologies and agency expertise.
ConversionBoosting
Location: Ludwigshafen on the Rhine
Website: conversionboosting.com
Founder: Julian Kleinknecht, Philipp Ronicke
ConversionBoosting helps companies to maximize their conversion performance and make data-based decisions. The agency relies on a clear strategy: through a mixture of precise web analysis, targeted A/B testing and well-founded UX design, tailor-made solutions are developed that guarantee sustainable success.
The focus is not only on optimization measures, but also on empowering in-house teams to implement them independently through the combination of practical advice and comprehensive training.
Focus of the services:
- A/B testing to improve landing pages and online stores
- Web analysis & tracking with tools such as Google Analytics 4 and Piwik PRO
- Conception and UX optimization for better user guidance
- Certifications and training for sustainable CRO expertise
Highlights:
With over 10 years of experience, ConversionBoosting has successfully assisted numerous companies such as SOS Children's Villages, BERNINA International AG and eRecht24 with conversion optimization. The agency stands out with its practice-oriented approach: instead of standard solutions, the focus is on individual strategies that are specifically tailored to the needs of the customer.
A particular added value lies in the combination of consulting and training. ConversionBoosting not only imparts knowledge in projects, but also through certifications and training to strengthen internal teams. This ensures that companies benefit from optimized processes in the long term and can implement CRO measures independently.
Benefit from the ideal combination of Varify.io® technologies and agency expertise.
Convertlab is a specialized CRO agency that combines data-driven conversion optimization with store development and technical know-how. With their multi-refined Double Diamond CRO Framework, they implement targeted growth steps and guarantee a return on investment of at least a factor of 5 within six months.
The approach is based on a clearly structured process: data from analytics, tracking and user behavior is comprehensively analysed, then targeted hypotheses are developed, checked using A/B tests and successful changes are implemented directly in the store. This results in optimizations that not only increase the conversion rate, but also sustainably increase overall sales.
Focus of the services:
- A/B testing and CRO research for specific sales levers
- Data analysis & tracking: GA4 audit, server-side tracking, GTM, custom analytics, cookie consent setup
- Web design & web development: store redesigns, landing pages, Shopify migration, performance optimization
- Full-service CRO: from hypothesis development to technical implementation
- Individual support from a small team of experts
Highlights:
Convertlab achieves average conversion rate increases of 20-40 % within six months for its clients and has already successfully implemented more than 500 A/B tests. The in-house Double Diamond Framework is based on years of experience and ensures predictable, sustainable sales increases. The close, individual support of a limited number of customers makes it possible to dive deep into each project.
Benefit from the ideal combination of Varify.io® technologies and agency expertise.
Eshop Guide
Locations: Bochum, Berlin, Hanover
Website: eshop-guide.com
Founder: Oliver Schönbett, Dave Crowder, Patrick Rosenblatt
Eshop Guide is a special exception in this overview: it is not a classic CRO agency, but a Shopify agency. But this is precisely where the key to higher conversion rates lies. A technically outdated or poorly designed online store can deter potential customers. Eshop Guide ensures that online stores look good, work well and sell efficiently.
With an experienced team of over 45 e-commerce specialists, Eshop Guide creates and modernizes online stores, migrates existing platforms to Shopify and ensures an optimized user experience. Instead of just making selective optimizations, the agency focuses on a holistic improvement of the store - from technical performance to clear user guidance.
Focus of the services:
- Shopify store creation for individual, high-performance e-commerce solutions
- Store relaunch for better loading times and enhanced functions with Shopify Online Store 2.0
- Migration to Shopify for a more efficient platform that often leads to higher conversion rates
- UX optimization for a seamless and convincing customer journey
Highlights:
Eshop Guide customers benefit from visible success: After migrating to Shopify, TITUS saw a 31% increase in conversion rate, while AniForte increased conversions by an impressive 50%. A particular advantage of Eshop Guide is the holistic approach.
The agency combines technical expertise with a strong focus on user-friendliness and performance. Through the integration of Shopify Online Store 2.0 companies benefit from modern functions and a more flexible store design that sustainably increases sales.
Benefit from the ideal combination of Varify.io® technologies and agency expertise.
LEAP/ is a conversion optimization agency that combines data-driven testing with psychological expertise. Created in 2015 from the merger of Barketing (SEO) and ConversionLift (CRO), LEAP/ pursues a clear scientific approach: A/B tests are based on well-founded, psychologically based hypotheses.
The team works entirely on a performance basis. Companies only pay if significant measurable success is achieved. In addition to technical and strategic CRO expertise, LEAP/ has its own psychologists who bring a deep understanding of user behaviour to every optimization measure.
Focus of the services:
- Psychology-based conversion rate optimization
- Holistic optimization along the customer journey
- Success fee model: payment only in the event of demonstrable success
- Combination of CRO and SEO for maximum reach and impact
Highlights:
LEAP/ has generated more than 100 million euros in sales for clients in the last 24 months, has been on the market for 15 years and has conducted over 3,000 A/B tests since 2012. The combination of scientifically sound hypothesis development, precise testing and a success-based fee model makes LEAP/ a strong partner for companies that want to achieve sustainable growth.
Benefit from the ideal combination of Varify.io® technologies and agency expertise.
Peaks & Pies
Location: Hamburg
Website: peaksandpies.com
Founder: Sagiev Busch, Jörg Tillmann, Daniel Boekhoff, Jan Neutard
Peaks & Pies is one of the leading agencies for conversion optimization, digital analytics and business intelligence. What sets the agency apart is its ability to combine complex data analysis with targeted optimization measures. With an interdisciplinary team of CRO consultants, designers, analysts and data scientists, Peaks & Pies develops customized strategies that are based on sound data and deliver measurable results.
The entire customer journey is analyzed and improved through systematic A/B testing, tailored tracking implementations and the development of business intelligence solutions. This data-driven focus ensures that optimization potential is not only identified, but also consistently implemented.
Focus of the services:
- Conversion optimization through A/B tests, UX analyses and data-based design
- Digital analytics for precise recording and evaluation of user behavior
- Business intelligence for the development of data strategies and dashboards for well-founded decisions
- Personalization of user experiences to increase relevance and boost the conversion rate
- Lead generation infrastructure with optimized landing pages, forms and backend management
Highlights:
Peaks & Pies has worked successfully with renowned companies such as mobile.de, FC Bayern Munich, ARD, OTTO and Tchibo. The agency achieves significant conversion increases through data-driven methods and supports many medium-sized and large companies in making informed decisions that promote sustainable growth.
Peaks & Pies' particular strength lies in its holistic approach and its ability to make complex data understandable. Clients benefit not only from optimizations on a technical and strategic level, but also from a partnership-based collaboration that is based on transparency and sustainable success.
Benefit from the ideal combination of Varify.io® technologies and agency expertise.
Smarketer expands the view of conversion optimization through a unique focus on Google Ads and strategically targeted campaigns. As a leading agency for Google Ads, Smarketer combines its expertise with effective landing page optimization to sustainably increase conversion rates. The focus is on data-driven strategies that make advertising measures more efficient and successful.
With a team of over 250 SEA experts, Smarketer offers a comprehensive range of services in the field of Google Ads. The agency develops individual strategies that are precisely tailored to the respective goals and needs of its clients. By combining precise data analysis and creative concepts, Smarketer ensures maximum performance and measurable success for advertising campaigns.
Focus of the services:
- Google Ads campaigns for search, display and video ads for targeted reach
- Google Shopping strategies to increase conversion rates
- Landing page optimization for better user guidance and higher completion rates
- Internationalization of Google Ads campaigns for different markets
- Tracking and analytics for precise data analysis and continuous optimization
Highlights:
Smarketer has successfully worked with many well-known companies such as Norma, Audible, Garmin. By optimizing Google Ads campaigns and developing conversion-centric landing pages, the agency was able to significantly increase the conversion rates of its clients. One example is the collaboration with ExpressZuschnitt, where targeted measures led to an increase in transactions of 366.5%.
Smarketer's particular strength lies in its comprehensive support: from strategic planning and operational implementation to continuous optimization, the agency offers all services from a single source. Campaigns are constantly improved through regular analyses and reports in order to achieve maximum results.
Benefit from the ideal combination of Varify.io® technologies and agency expertise.
TRKKN is an interdisciplinary full-service provider for digital transformation specializing in conversion optimization, digital analytics, AdTech, cloud engineering and AI-powered insights. The agency is a certified Google Marketing Platform and Google Cloud Partner and combines expertise in CRO, UX, analytics, development and data science to increase the digital maturity of companies.
In the area of conversion optimization, TRKKN supports projects from data analysis and UX audits to the development of individual hypotheses and the technical implementation of A/B tests, performance optimizations and accessibility checks. Tools such as Optimizely, AB Tasty, Adobe Target, Hotjar, VWO and Dynamic Yield are used. TRKKN also offers dashboarding and AI analyses with Looker Studio as well as robust cloud infrastructures based on Google Cloud and BigQuery.
Focus of the services:
- Conversion optimization with UX audit, landing pages, A/B tests, performance optimization and WCAG checks
- Implementation of tools such as Optimizely, Adobe Target, AB Tasty, Dynamic Yield, Hotjar and VWO
- Digital analytics infrastructure with GA4, Firebase, server-side tracking and data quality consulting
- Reporting and insights with Looker Studio and machine learning models
- Cloud infrastructure and data strategy with Google Cloud, BigQuery and first-party data
Highlights:
TRKKN has established itself as an internationally active specialist for data-driven conversion optimization. The agency combines in-depth analytical expertise with state-of-the-art testing and personalization platforms to achieve measurable increases in conversion rates. The close integration of CRO, analytics, AI and cloud solutions ensures that optimizations are not only effective in the short term, but also scalable in the long term.
Benefit from the ideal combination of Varify.io® technologies and agency expertise.
