Top 10 CRO Companies: Leading Conversion Optimization Experts for High-Converting B2B Funnels

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Tired of trying strategy after strategy only to see your B2B funnel stall before the finish line? You’re not alone—many businesses pour resources into website tweaks, endless A/B tests, and generic conversion tactics, yet still struggle to turn visitors into real leads. That’s why partnering with the right CRO companies is more crucial than ever for businesses aiming to boost conversion rates and maximize ROI.

In today’s competitive landscape, even small percentage gains in website conversion optimization can translate into significant revenue growth. The stakes couldn’t be higher—B2B funnels are complex and require the expertise of conversion optimization experts who know exactly what is CRO and how to apply proven techniques that deliver measurable results.

We’ve researched the field and handpicked a list of the top 10 conversion optimization company leaders making waves for high-converting B2B funnels. This shortlist is based on a careful blend of real client satisfaction and demonstrable performance, prioritizing firms with the highest reputation for results. Ready to see how the best conversion optimization consultants drive better outcomes? Let’s dive in and discover what is the conversion rate you should be aiming for—with the experts who get you there.

What is CRO and Why Is It Essential for B2B Funnels?

CRO, or Conversion Rate Optimization, is the strategic process of increasing the percentage of website visitors who take a desired action, such as filling out a contact form, signing up for a newsletter, or making a purchase. When it comes to B2B funnels, website conversion optimization is crucial because B2B sales cycles often involve multiple stakeholders and higher value contracts. This makes each captured lead and every conversion especially valuable. If you’re wondering “what is CRO,” think of it as the science—and art—of making your digital presence work harder for your bottom line.

CRO companies specialize in analyzing user behavior and identifying barriers that prevent conversions. By applying data-driven insights, these conversion optimization experts help businesses refine landing pages, CTAs, and user flows—ultimately boosting the efficiency of marketing efforts and reducing the cost per acquisition. For more on holistic strategies to strengthen your funnel, see our guide to B2B website strategy.

How Do CRO Companies Work?

Conversion optimization consultants and companies bring a systematic approach to identifying and fixing leaks in your sales funnel. The process usually begins with a comprehensive audit, examining analytics data, heatmaps, user session recordings, and usability tests to understand visitor behavior. Based on these insights, they form hypotheses about possible improvements—such as changing button colors, reworking copy, or optimizing page load speed.

After implementing changes, CRO companies rely on A/B testing, multivariate testing, and continuous monitoring to compare results and ensure statistically significant improvements. This ongoing cycle of testing and refining means that conversion optimization company partners can adapt strategies as your audience evolves, ensuring sustained growth in conversion rates.

Key CRO Metrics and Tools

A fundamental part of the CRO process is understanding what the conversion rate is and how to measure it. The conversion rate is typically defined as the percentage of visitors who complete a specific goal, such as signing up for a demo or downloading a white paper. In addition to conversion rate, other key performance indicators include bounce rate, average session duration, and lead-to-opportunity ratio.

CRO companies rely on a robust toolkit for analysis and improvement. Popular tools include Google Analytics for traffic and behavior analysis, Hotjar or Crazy Egg for heatmaps and session replays, and platforms like Optimizely or VWO for running A/B tests. These tools empower conversion optimization consultants to make informed decisions and deliver measurable results.

Benefits of Partnering with CRO Companies

Engaging a conversion optimization company brings expert insights and a proven methodology to your B2B funnel. Benefits include higher lead quality, improved ROI on marketing campaigns, and deeper, actionable insights into user behavior. CRO companies can streamline the buyer journey, reduce friction points, and help your business stay ahead in competitive markets.

For B2B organizations, these improvements often translate into shorter sales cycles, stronger customer relationships, and higher lifetime value per client. By leveraging conversion optimization experts, businesses can unlock the full potential of their online presence, making every visitor count.

Top CRO Companies Delivering Unmatched Conversion Optimization Results

Choosing the right CRO company can transform your website conversion optimization efforts, driving measurable uplift in your conversion rate and overall ROI. These leading agencies are staffed by conversion optimization consultants and experts who bring years of experience and proven tactics to every project. Whether you’re looking to understand what is CRO, or searching for a seasoned conversion optimization company to boost your B2B funnels, these firms are at the top of their game. Below, you’ll find the definitive list of trusted partners ready to take your digital strategy—and conversions—to the next level.

Scopic Studios is a medium-sized digital marketing powerhouse specializing in elevating online visibility and driving high conversion rates for B2B clients across industries such as healthcare, IT, manufacturing, and finance. With a multidisciplinary team of SEO experts, developers, and conversion optimization consultants, Scopic delivers comprehensive solutions that are always tailored to align with each client’s business objectives and budget. Certified by Google, HubSpot, and Semrush, and partnered with AWS Advanced Tier and Google Cloud, Scopic excels at maximizing impact in competitive digital landscapes. Their full-service offering—including SEO, PPC, web design, and content marketing—ensures that every aspect of your digital funnel is expertly crafted to boost website conversion optimization and measurable ROI.

Key Details:

• Minimum Project Size: $1,000 – $10,000
• Hourly Rate: $40 – $50 / hr
• Location: Marlborough, United States
• Industries Served: Health Care, Software & IT Services, Manufacturing, Finance
• Average Rating: 4.7/5 based on 103 reviews on DesignRush, Clutch, Google

Client Success Stories

Scopic Studios has a strong track record in delivering conversion optimization results for B2B companies. Their collaboration with Shapiro led to a 211% increase in conversions and a fivefold jump in organic clicks, while WorldClinic saw a staggering 5066.6% increase in conversion rate through targeted SEO and UX improvements. Scopic also propelled RecipeIQ app downloads by 143% and decreased cost per download by 40%. Their work consistently demonstrates what is CRO done right: advanced digital strategies that drive real growth in lead generation and ROI.

“We now currently do marketing and SEO work with Scopic; the effort, turnaround time, and responsiveness that we receive is top notch. Amazing staff!” – Christie Arruda, Skip Shapiro Enterprises, LLC

“Their expertise has significantly enhanced our online presence, and we truly value their partnership. I highly recommend their services to any business looking for top-tier digital solutions.” – Charles Bossi, WorldClinic

DiscoverMyBusiness is a medium-sized digital marketing agency headquartered in New York City, specializing in lead generation, conversion rate optimization (CRO), automation, and integrated marketing and sales operations. Since 2018, they have empowered a wide range of businesses to scale efficiently by merging innovative website conversion optimization strategies with tailored advertising and SEO campaigns. Their multidisciplinary team has earned top marks from clients for consistently driving enhanced engagement and measurable growth, making them a go-to resource for those seeking conversion optimization experts. With a focus on nurturing enduring relationships and delivering end-to-end digital solutions, DiscoverMyBusiness stands out among CRO companies for its client-centric, data-driven approach. If you’re ready to let your website generate leads, their expertise can help you achieve your goals.

Key Details:

• Minimum Project Size: $1,000 – $10,000
• Hourly Rate: $300/hr
• Location: New York City, United States
• Industries Served: Legal, Health Care, Retail, Consumer Goods
• Average Rating: 5.0/5 based on 39 reviews on DesignRush

Client Success Stories

DiscoverMyBusiness has helped clients like Astoria City Dental and Sirota & Associates achieve significant gains through comprehensive CRO, SEO, and paid ad campaigns. One dental client saw a 15% year-over-year increase in web traffic, resulting in an impressive flow of over 5,000 new users monthly by leveraging website conversion optimization best practices. They deliver results across multiple channels, from elevating brand personas with creative content to building and optimizing landing pages that convert. Their collaborative process ensures ongoing strategy refinement, driving measurable growth in both web traffic and lead quality.

“I have been working with DiscoverMyBusiness for many years… Their work quality exceeded my expectations.”
“We saw a 15% increase in web traffic year-over-year and secured 5,000 new users per month.”

Devenup SEO stands out among Eastern European CRO companies for combining transparent processes with highly effective SEO, PPC, and conversion optimization strategies. Established in 2015 and headquartered in Krakow, Poland, this medium-sized digital agency leverages the Pareto Principle to ensure clients get significant results from the most impactful 20% of SEO and CRO actions. Their proven methodology includes thorough competitor analysis, strategic content marketing, technical SEO, data-driven CRO, and market research—making them a trusted partner for both emerging brands and enterprise clients. With a commitment to transparency and a cost/quality ratio, Devenup SEO has helped clients in eCommerce, fintech, healthcare, education, and more to increase visibility and fuel website conversion optimization.

Key Details:

• Minimum Project Size: $1,000 – $10,000
• Hourly Rate: $40/hr
• Location: Krakow, Poland
• Industries Served: eCommerce, Fintech, Health Care, Education
• Average Rating: 5.0/5 based on 69 reviews on DesignRush

Client Success Stories

Devenup SEO’s conversion optimization consultants have elevated performance for leading clients like Parley Pro and Everest Rehabilitation Hospitals by implementing data-driven CRO strategies, technical SEO, and targeted content improvements. Case studies highlight achievements such as a 15% boost in domain authority and 40% organic traffic growth for recruiting platforms, as well as persistent gains in keyword rankings and website traffic across various industries. Their custom, phased approach—covering everything from in-depth site audits to link building—has proven to improve conversion rates and overall ROI for clients seeking what is CRO and practical solutions from conversion optimization experts.

“They are literally one of the best SEO firms you’d ever collaborate with out there.”
“Boosted domain authority by 15%, grew organic traffic by 40% within six months… Outstanding work quality, strong satisfaction, and full confidence in referring Devenup SEO to others.”

Capitalize Digital is a leading digital marketing agency in Cape Town, South Africa, specializing in website conversion optimization and comprehensive online marketing solutions. Known for their agile and strategic approach, the company blends bespoke UI/UX web design, targeted SEO, and pay-per-click advertising to deliver measurable growth. Their team, with over 40 years of combined expertise, serves eCommerce and business service brands of all sizes by boosting organic growth, optimizing conversion rates, and helping businesses establish distinctive online brand voices. Praised for responsive communication and project agility, Capitalize Digital stands out among CRO companies for its proactive strategies and results-driven mindset.

Key Details:

• Minimum Project Size: $1,000+
• Hourly Rate: $50 – $99 / hr
• Location: Cape Town, South Africa
• Industries Served: eCommerce, Business services
• Average Rating: 4.6/5 based on 15 reviews on Clutch

Client Success Stories

Capitalize Digital’s expertise in conversion optimization shows in standout projects like building lead-generating websites for consulting and relocation companies and providing ongoing SEO and PPC for logistics firms. For a consulting client, they implemented custom website development, robust SEO, and Google Ads strategies, resulting in immediate high-quality lead generation—even before the site launch. Their work for a relocation company focused on custom-coded features and SEO-rich content to increase conversions. In another case, their digital marketing overhaul for a cold storage logistics firm led to steady traffic growth, thanks to continuous performance analysis and optimization of marketing channels.

“Capitalize Digital transformed our vision into a visually appealing, conversion-focused website—far exceeding our expectations. Several clients highlighted improved lead quality and increased sales, attributing it to Capitalize Digital’s targeted strategies and proactive campaign management.”

Magnet Co is a full-service digital agency headquartered in Cincinnati, Ohio, recognized for crafting human-centered websites and digital strategies tailored for ambitious businesses. Since 2004, their seasoned team has partnered with renowned brands such as Luxottica, IKEA, UCLA, and McGraw Hill, helping them amplify their online impact through a blend of intuitive design, performance-driven development, and advanced conversion optimization. Magnet Co’s expertise spans SEO, web development, UI/UX, and pay-per-click services, making them a formidable choice for clients looking to improve conversion rates and digital ROI. With a collaborative approach and transparent process, Magnet Co delivers digital experiences that not only look impressive but drive meaningful results for businesses across a range of industries.

Key Details:

• Minimum Project Size: $25,000+
• Hourly Rate: $200–$300 / hr
• Location: Cincinnati, United States
• Industries Served: eCommerce, Financial services, Automotive, Arts, entertainment & music
• Average Rating: 4.8/5 based on 16 reviews on Clutch

Client Success Stories

Magnet Co’s portfolio showcases impactful projects for a diverse clientele—from elevating the SEO and LinkedIn performance of a commercial vehicle electrics firm to delivering a web presence overhaul for a prominent house care business. Their ability to understand complex industries and deliver on budgets and deadlines has earned client trust and repeat business. Website rebuilds for ad agencies, nuanced content strategies, and scalable hosting solutions like Netlify and Sanity.io underscore their prowess as conversion optimization consultants and CRO experts. Their proactive project management and logical, strategic approach to platform development stand out in numerous client engagements, fueling high conversion rates and business success.

“Magnet Co’s strategic recommendations and hands-on project management delivered results that far exceeded our expectations. Their team listened intently to our goals, keeping us aligned and confident every step.”

Search Engine People stands out as a premier CRO company in Canada, renowned for its SEO and conversion optimization expertise. Since 2001, this medium-sized agency has empowered over 2,000 Canadian businesses—ranging from startups to enterprises—by delivering measurable results through digital strategy, CRO, and PPC management. Their 60+ strong, Canada-based team pairs deep platform knowledge with transparent, client-focused communication, helping brands drive higher website conversion rates. With Google’s first-ever Canadian partnership and additional certifications from Microsoft, Facebook, and LinkedIn, Search Engine People brings both breadth and credibility to CRO services for diverse industries, including media, financial services, ecommerce, and professional services.

Key Details:

• Minimum Project Size: $1,000+
• Hourly Rate: $150 – $199 / hr
• Location: Toronto, Canada
• Industries Served: Media, eCommerce, Financial services, Arts, entertainment & music
• Average Rating: 4.9/5 based on 43 reviews on Clutch

Client Success Stories

Search Engine People’s conversion optimization consultants have consistently achieved major impact across varying sectors. For a professional services firm, SEP’s CRO and SEO work led to high impressions, click-through rates, and measurable conversion gains by designing custom campaigns for specific business lines. In the financial sector, their approach to digital marketing fostered positive ROI and steady growth—driven by biweekly collaboration with clients. Marketing agencies commend SEP’s quick campaign optimizations, noting that redesigned PPC strategies sparked a strong increase in high-quality leads. These results illustrate what is CRO at its best: continuous boosts in performance metrics and transparent, data-driven execution.

“Numerous reviews highlight successful client outcomes, including increased ROI and conversion rates. Clients report significant improvements in performance metrics, attributing these successes to Search Engine People’s efforts.”
“Search Engine People is noted for their impressive industry knowledge, which they leverage to provide tailored solutions that align with client goals.”

Brandabl is a certified Reward Agency based in Houston, renowned for building high-performance websites that integrate innovative web design with advanced conversion optimization strategies. As a medium-sized firm, Brandabl serves a broad spectrum of industries, from eCommerce and beauty to healthcare and retail. Their focus goes beyond eye-catching visuals; they are conversion optimization consultants who specialize in UI/UX design, WordPress development, and tailored website conversion optimization services. Since 2015, Brandabl has earned a reputation for crafting seamless digital experiences that help brands stand out and achieve tangible growth online.

Key Details:

• Minimum Project Size: $1,000 – $10,000
• Hourly Rate: $100/hr
• Location: Houston, United States
• Industries Served: eCommerce, Beauty, Wellness & Fitness, Health Care
• Average Rating: 5.0/5 based on 58 reviews on DesignRush

Client Success Stories

Brandabl’s expertise in CRO, web design, and development has attracted leading companies like Stanford University, Gran Coramino, and Lightspeed Venture Partners. Their holistic approach—spanning UI/UX, eCommerce, and conversion strategy—has driven measurable results for clients seeking to understand what is CRO and maximize their conversion rates. Clients report on Brandabl’s creative insight and dedication, noting that the team feels “like a part of our internal team” and excels in bringing visions to life with attention to both design and business outcomes. If you’re searching for a partner experienced in converting website design, Brandabl’s partnerships typically lead to improved engagement, brand growth, and lasting digital impact.

“What stood out most about Brandabl was their combination of creative expertise and professionalism. Their ability to take our vision and elevate it with creative insights, while staying true to our brand identity, was particularly impressive.”
“They really feel like a part of our internal team. Great attitude, excellent communication, and incredible attention to detail.”

RSO Consulting stands out among CRO companies for its data-driven approach and deep commitment to measurable digital growth. Based in San Francisco, this boutique agency has been providing conversion optimization, SEO, PPC, and analytics solutions since 2006. Their seasoned team partners with clients ranging from ambitious startups to multinational enterprises, aligning each strategy with unique business goals and industry needs. RSO’s transparent processes, Google Partner certification, and white-hat practices make them a top choice for those looking to boost conversion rates and maximize ROI through leading-edge tactics in website conversion optimization and paid advertising.

Key Details:

• Minimum Project Size: $50,000+
• Hourly Rate: $150 – $199 / hr
• Location: San Francisco, United States
• Industries Served: eCommerce, Financial services, Education, Medical
• Average Rating: 4.9/5 based on 31 reviews on Clutch

Client Success Stories

RSO Consulting has consistently delivered exceptional results for a diverse clientele. For an IT services company, their conversion optimization consultants boosted organic search conversions and secured top-10 keyword rankings, resulting in a 10% YoY increase in organic traffic. They helped an education tech group cut ad costs below industry averages and rapidly raised site authority through expert SEO and PPC management. Another project for an electronics brand led to a significant jump in website conversion rates and transaction sizes thanks to rigorous testing and custom marketing strategies. RSO’s proactive project management, transparent communication, and hands-on expertise in conversion optimization position them as a trusted partner for B2B growth.

“RSO Consulting is proactive, responsive, and attentive to details—their technical expertise stands out. Their project management is excellent, and they always deliver on time with clear communication.”

KlientBoost is a dynamic conversion optimization company based in Costa Mesa, California, known for integrating top-tier PPC, SEO, and CRO strategies to drive measurable results. With a team of over 80 marketing experts, they have consistently achieved more than 100% year-over-year growth by focusing on maximizing ROI for their 250+ clients, including notable names like Bloomberg, Stanford University, and Airbnb. Their data-driven yet creative approach ensures that website visitors generate leads with your website, making them one of the go-to CRO companies for B2B brands in need of serious business results. KlientBoost is particularly adept at tailoring strategies for lead generation, SaaS, and eCommerce brands looking to optimize conversions and elevate their digital presence.

Key Details:

• Minimum Project Size: $1,000 – $10,000
• Hourly Rate: $100/hr
• Location: Costa Mesa, United States
• Industries Served: Home & Garden, Electronics
• Average Rating: 4.8/5 based on 151 reviews on DesignRush

Client Success Stories

As trusted conversion optimization experts, KlientBoost has helped clients across diverse sectors improve their SEM performance, boost conversion rates, and scale bookings. Their strategic management of PPC, in combination with website conversion optimization and tailored campaign targeting, has resulted in consistent growth—some clients report a steady 10% increase in monthly bookings and dramatic improvements in CPA and CTR. With in-depth CRO expertise and proactive account management, their team consistently delivers campaigns that align perfectly with client business goals.

“KlientBoost truly takes the time to understand your business and objectives from day one. Since they began, our monthly bookings have grown 10% per quarter—it’s a game-changer.”

ATRA is a leading performance marketing agency with a strong focus on conversion rate optimization (CRO) and paid media management. Backed by a team of digital marketing analysts, strategists, and specialists, ATRA is recognized for delivering exceptional ROI and tangible results for established businesses. Over the past 8 years, ATRA has maintained an impressive 95% client retention rate, managed over $500M in ad spend, and secured multiple awards for B2B and B2C excellence. Specializing in conversion optimization consulting for sectors like legal, healthcare, education, and financial services, ATRA stands out for their personalized strategies, transparent communication, and relentless pursuit of growth for their clients.

Key Details:

• Minimum Project Size: $1,000+
• Hourly Rate: $100 – $149 / hr
• Location: Tempe, United States
• Industries Served: Education, Legal, Medical, Financial services
• Average Rating: 5.0/5 based on 44 reviews on Clutch

Client Success Stories

ATRA’s expertise as a conversion optimization company is showcased through results-driven projects, such as their CRO and PPC work for a car wash company, which led to increased membership conversions and higher car counts. Their paid media efforts for a software firm boosted lead volume by 23% and reduced cost per conversion by 32%, while for a roofing company, their campaigns doubled appointment rates and exceeded $100K in quarterly sales. Clients consistently praise ATRA for their tailored strategies, initiative, and excellent project management—attributes that have driven consistent improvements in website conversion optimization and ROI metrics.

“ATRA’s personalized strategies and proactive communication made a huge impact on our conversion rates. Their transparency and results-driven approach set them apart.”

How Scopic Studios Drives B2B Conversion Success

Finding the right conversion optimization company can feel like navigating a minefield. You need a partner who truly understands the nuances of B2B funnels and can deliver tangible results, not just empty promises. That’s where Scopic Studios comes in. We recognize that your B2B conversion challenges are unique, and we tailor our approach to align perfectly with your business goals and budget.

Scopic Studios offers a comprehensive suite of services designed to boost your website conversion optimization. Our team of seasoned conversion optimization experts dives deep into understanding your audience, analyzing user behavior, and identifying friction points in your funnel. From there, we craft data-driven strategies that address your specific needs, whether it’s optimizing landing pages, refining CTAs, or improving overall user experience.

With Scopic Studios, you gain a partner dedicated to maximizing your ROI and driving sustainable growth. We leverage industry-leading tools and proven best practices to ensure your marketing efforts deliver maximum impact. Let us help you transform your B2B funnel into a high-converting machine.

Conclusion

This article has highlighted the importance of CRO for B2B funnels and showcased several leading CRO companies specializing in website conversion optimization. These conversion optimization experts employ various strategies and tools to improve what is the conversion rate and overall marketing ROI. As B2B marketing continues to evolve, the demand for sophisticated conversion optimization consultants will only increase. Future trends will likely emphasize personalization, AI-driven insights, and a more holistic approach to user experience.

Ultimately, the right conversion optimization company can transform your website into a powerful lead generation tool. Scopic Studios understands the intricacies of B2B funnels and offers tailored solutions to maximize your conversion potential. Explore more insights into how a Full-service digital marketing agency can elevate your B2B marketing strategy and drive tangible results.