{"id":17761,"date":"2023-11-07T23:42:24","date_gmt":"2023-11-07T22:42:24","guid":{"rendered":"https:\/\/onder.nl\/?post_type=diensten&#038;p=17761"},"modified":"2026-05-22T14:24:32","modified_gmt":"2026-05-22T12:24:32","slug":"conversion-optimisation","status":"publish","type":"diensten","link":"https:\/\/onder.nl\/en\/diensten\/conversie-optimalisatie\/","title":{"rendered":"Conversion optimisation (CRO)"},"content":{"rendered":"<h2 class=\"wp-block-heading\">On this page: <\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><a href=\"#1\">Is this recognisable?<\/a><\/li>\n\n\n\n<li><a href=\"#2\">Our approach<\/a><\/li>\n\n\n\n<li><a href=\"#3\">What is conversion optimisation?<\/a><\/li>\n\n\n\n<li><a href=\"#4\">Why hire a conversion optimisation agency<\/a><\/li>\n\n\n\n<li><a href=\"#5\">Why conversion optimisation combined with SEO?<\/a><\/li>\n\n\n\n<li><a href=\"#6\">What does a conversion optimisation journey look like<\/a><\/li>\n\n\n\n<li><a href=\"#7\">Working with Onder: transparency and knowledge transfer<\/a><\/li>\n\n\n\n<li><a href=\"#8\">Frequently asked questions about conversion optimisation agency<\/a><\/li>\n\n\n\n<li><a href=\"#9\">CRO checklist<\/a><\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading has-text-align-left\" id=\"1\">Is this recognisable?<\/h2>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-8f761849 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-8f761849 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<p class=\"wp-block-paragraph\"><strong>Spending money without real returns<\/strong><br>You invest heavily in ads, but the results lag behind. On balance, it simply does not deliver enough to meet your goals.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>No focus or time<\/strong><br>There is no elaborate strategy or space in your calendar to actively work on increasing your conversion rate, number of orders and average order value.<\/p>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<p class=\"wp-block-paragraph\"><strong>Growth stalled<\/strong><br>Your webshop seems to have reached a ceiling. Sales are no longer growing and it feels like you are running into an invisible limit.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Disappointing collaborations<\/strong><br>You have previously worked with agencies that made nice promises but delivered little. You are now looking for a CRO expert who actually delivers results and dares to prove that.<\/p>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<div id=\"tf-image-block_0833decaf33568a374b07ac767e0f6f4\" class=\"block100 tf-image alignfull tf-image-fullwidth\">\n\n    \n        <img decoding=\"async\" src=\"https:\/\/onder.nl\/site\/uploads\/2023\/11\/ChatGPT-Image-12-aug-2025-13_46_14.png\" srcset=\"https:\/\/onder.nl\/site\/uploads\/2023\/11\/ChatGPT-Image-12-aug-2025-13_46_14.png 1024w, https:\/\/onder.nl\/site\/uploads\/2023\/11\/ChatGPT-Image-12-aug-2025-13_46_14-460x460.png 460w, https:\/\/onder.nl\/site\/uploads\/2023\/11\/ChatGPT-Image-12-aug-2025-13_46_14-220x220.png 220w, https:\/\/onder.nl\/site\/uploads\/2023\/11\/ChatGPT-Image-12-aug-2025-13_46_14-768x768.png 768w, https:\/\/onder.nl\/site\/uploads\/2023\/11\/ChatGPT-Image-12-aug-2025-13_46_14-12x12.png 12w, https:\/\/onder.nl\/site\/uploads\/2023\/11\/ChatGPT-Image-12-aug-2025-13_46_14-110x110.png 110w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" alt=\"Shopping cart climbs arrow by conversion optimisation agency\" loading=\"lazy\">\n\n    \n    <div class=\"clearboth\"><\/div>\n\n<\/div><\/div>\n<\/div>\n<\/div>\n<\/div>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"2\">Our approach:<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\" id=\"conversie1\">SEO &amp; CRO combined: we make sure your website not only converts better, but is also more findable in search engines, so that you get maximum results from both traffic and conversion.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Specialist team per project: we deploy experienced researchers, CRO specialists, A\/B test developers and experimentation leads<\/li>\n\n\n\n<li>Tailoring to scale and focus: we handle limited growth trajectories for optimal impact<\/li>\n\n\n\n<li>Full-funnel optimisation: user research, UX analysis, funnel and page review, onsite interaction analysis and usability audits<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"3\">What is conversion optimisation?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Conversion optimisation is all about optimising the user experience so that the user 'converts' and relatively more conversion is achieved. But what then is conversion?<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">For webshops: a purchase, a higher order value or perhaps even repeat purchases<br>For lead generators (websites with 'leads' as their main goal): a lead, request for quotation, completed contact form<br>For content platforms: clicks on affiliate links<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Conversions differ within types of websites and by industry, but within websites we also talk about different types of conversions. Think about:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>The purchase or a request for quotation<\/li>\n\n\n\n<li>Downloads of manuals<\/li>\n\n\n\n<li>Newsletter subscriptions<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\" id=\"conversie2\">The ultimate goal of a conversion optimisation journey is the 'hard' conversion: the purchase or the quotation request. But there are many different steps that ultimately lead to this.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"4\">Why hire a conversion optimisation agency<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">An external <strong>conversion optimisation agency<\/strong> brings specialist knowledge, an independent view and professional tools. Reliable testing is all about accurate statistics and careful quality control.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Objective view: external experts see areas for improvement that internal teams miss due to bias<\/li>\n\n\n\n<li>Advanced tools: access to premium testing software, heatmaps and analytics<\/li>\n\n\n\n<li>Proven methodologies: structured approach based on experience with different sectors<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"5\">Why conversion optimisation combined with SEO?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">At Onder, we not only help with CRO, but also SEO. As a conversion optimisation agency, we know how important it is that your website is both findable and profitable.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">SEO is all about increasing organic traffic to your website. The focus here is on relevant traffic: users making searches that are close to a product or service. The moment these users do not convert or quickly leave your website, it is a waste.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">There are three reasons why the combination of CRO &amp; SEO makes sense:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>The ultimate goal of a website is central to all online marketing channels, including SEO. After all, you have no use for users from organic traffic who do not convert.<\/li>\n\n\n\n<li>Organic users' engagement on your website also ultimately affects your rankings in Google.<\/li>\n\n\n\n<li>SEO specialists are working on layout and content of different page types, performing data analysis and forming an excellent profile to also look at your website's conversion rate.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"6\">What does a conversion optimisation journey look like<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">A journey with our conversion optimisation agency is intensive and focused on results. We uncover the pain points towards conversion, come up with points for improvement and implement them or test them with A\/B tests to verify whether the hypotheses are correct.<\/p>\n\n\n\n<div id=\"tf-image-block_084e85ba65c45c0657619c687a54dc25\" class=\"block100 tf-image alignfull tf-image-fullwidth\">\n\n    \n        <img decoding=\"async\" src=\"https:\/\/onder.nl\/site\/uploads\/2023\/11\/Onder-CRO--1536x844.png\" srcset=\"https:\/\/onder.nl\/site\/uploads\/2023\/11\/Onder-CRO--1536x844.png 1536w, https:\/\/onder.nl\/site\/uploads\/2023\/11\/Onder-CRO--460x253.png 460w, https:\/\/onder.nl\/site\/uploads\/2023\/11\/Onder-CRO--1100x605.png 1100w, https:\/\/onder.nl\/site\/uploads\/2023\/11\/Onder-CRO--768x422.png 768w, https:\/\/onder.nl\/site\/uploads\/2023\/11\/Onder-CRO--2048x1126.png 2048w, https:\/\/onder.nl\/site\/uploads\/2023\/11\/Onder-CRO--110x60.png 110w, https:\/\/onder.nl\/site\/uploads\/2023\/11\/Onder-CRO-.png 2100w\" sizes=\"(max-width: 1536px) 100vw, 1536px\" alt=\"\" loading=\"lazy\">\n\n    \n    <div class=\"clearboth\"><\/div>\n\n<\/div>\n\n\n<h3 class=\"wp-block-heading\">Phase 1 Analysis<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">At our conversion optimisation agency, the first phase revolves entirely around one central question: <em>how does the user behave on your website?<\/em><br>With a thorough website analysis based on best practices, data and funnel analysis (Google Analytics) and behavioural analysis via tools like Hotjar and Clarity, we identify the main obstacles on all page types. In this way, we discover exactly in which parts of the website the most gains can be made and where we start working first.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The analysis forms the basis for the next step in our conversion optimisation process: determining areas for improvement and translating them into concrete test ideas and hypotheses.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Phase 2 Hypotheses (the ideas phase)<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Based on the analysis, we know where the biggest bottlenecks lie. In this idea phase, our conversion optimisation agency works on creative and data-driven solutions to improve conversion. Here, we look beyond text adjustments. Consider, for example:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Layout changes:<\/strong> such as including an important item in the menu or adding a sticky menu on mobile.<\/li>\n\n\n\n<li><strong>Persuasion principles:<\/strong> such as adding product reviews as social proof.<\/li>\n\n\n\n<li><strong>Clear communication:<\/strong> such as placing 'Response within 24 hours' on a contact form.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">We draw inspiration from previous successes and best practices from the market. Together with the client and web builder, we brainstorm, where product or service knowledge and technical expertise are indispensable.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Not every point of improvement needs to be A\/B tested. Some ideas are real no-brainers and can be implemented immediately for quick results.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Phase 3 Testing<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">In this phase, our conversion optimisation agency tests the hypotheses to check whether they actually have an effect. Part of the visitors see the improvement point, while another part sees the initial situation. This happens in two ways:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>A\/B testing:<\/strong> we compare the old situation with one new variant, usually in a 50\/50 split.<\/li>\n\n\n\n<li><strong>Multivariate testing:<\/strong> we compare the old situation with several new variants simultaneously to determine which performs best.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">When a test has produced sufficient data and the hypothesis is confirmed, we implement the improvement permanently. For websites with high traffic, this can be done quickly, while for lower volumes it may take longer to see significant results.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\" id=\"conversie5\">For testing, we use the tool Convert. In doing so, we work closely with developers for the technical implementation as well as with product experts or service providers from the customer, so that every point of improvement is in line with practice.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"7\">Working with Onder: transparency and knowledge transfer<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">We work as an extension of the internal team. You stay in charge of goals and priorities, we provide research, design and analysis.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Transparency is standard. There is access to raw data, dashboards and test calendar in a shared environment. Tools connect to the existing stack.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Knowledge transfer is ongoing. Each test gets a full file with hypothesis, design and reusable patterns. We maintain a knowledge base with playbooks and components.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">SEO and CRO work integrated. Test design includes SEO guardrails on organic traffic so variants respect search performance.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"conversie5\">Do you also want a higher conversion rate?<\/h3>\n\n\n\n<div id=\"tf-buttons-block_e69decf4baaab0aab5dc4e94e0887311\" class=\"block100 tf-buttons alignfull\">\n\n          <a class=\"btn  btn-turq\"\n          href=\"https:\/\/onder.nl\/en\/services\/live-cro-analysis\/\"\n          target=\"\">\n           <span>Do the free live CRO analysis!<\/span>\n       <\/a>\n   \n    \n    <div class=\"clearboth\"><\/div>\n\n<\/div>\n\n\n<h2 class=\"wp-block-heading\" id=\"8\">Frequently asked questions about conversion optimisation agency<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>How long does it take a conversion optimisation agency to deliver results?<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Initial insights are visible within weeks, but significant conversion improvements through systematic testing require three to six months for reliable results.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Are tool licences included in the cost of a conversion optimisation agency?<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Professional agencies own licences for testing and analytics tools as onder part of their service, but specialised enterprise tools may have separate costs.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>From what traffic volume does working with a CRO agency make sense?<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">E-commerce from 20,000 sessions per month, B2B lead generation from 5,000-10,000 sessions per month, and SaaS from 10,000-25,000 sessions per month for reliable test results.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>How long does a CRO process take?<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">A CRO process with us usually has no fixed end date. After all, conversion optimisation is not a one-off action, but a continuous process of onderrying, testing and improving. We keep experimenting to get more out of your webshop step by step.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">You will always receive clear updates from us on the progress and impact of our efforts. Do we see that additional testing barely makes a difference? Then we will tell you honestly. Together, we look at whether it makes sense to complete or scale down the process.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"9\">CRO Checklist<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Still looking at your website yourself first?  Then use our CRO checklist to quickly identify the biggest areas for improvement. Look, for instance, at loading speed, clarity of your call-to-actions, consistency in your design and whether forms are easy to fill in. That way, you can already see where visitors might drop out. With these insights, you can talk to a specialist in a more targeted way and you will know better which onder parts in a project should be given priority.<\/p>\n\n\n\n<div id=\"tf-form-block_41dd152732373c59aacf5208a9c4fe6b\" class=\"block100 tf-form alignfull\">\n\n    <div class=\"innerblocks\">\n        <div class=\"acf-innerblocks-container\"><\/div>    <\/div>\n\n    \n    <div class=\"clearboth\"><\/div>\n\n<\/div>","protected":false},"author":20,"featured_media":0,"template":"","meta":{"_acf_changed":false,"inline_featured_image":false,"rank_math_title":"Conversie optimalisatie (CRO) - Bureau Onder","rank_math_description":"Ontdek hoe wij als conversie optimalisatie bureau jouw online succes kan vergroten. Leer effectieve strategie\u00ebn en tips om meer conversies te genereren. 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