Guides and case notes on AI-driven conversion rate optimization, funnel analysis and A/B testing.https://www.kaen.cz/enhttps://www.kaen.cz/en/blog/ai-cro-tools-compared/https://www.kaen.cz/en/blog/ai-cro-tools-compared/AI CRO tools compared by what they actually do: page optimizers, testing-platform AI, analytics copilots, AI audits, agency agents and funnel-first CRO agents.Sat, 19 Sep 2026 00:00:00 GMTkonverzeAI CRO toolsAI CRO agentconversion rate optimizationA/B testingFibr AICoframeVWOPostHog AIcomparisonhttps://www.kaen.cz/en/blog/why-your-ab-test-lies-statistical-significance/https://www.kaen.cz/en/blog/why-your-ab-test-lies-statistical-significance/Five ways an A/B test crowns a winner that doesn't exist. What statistical significance means and how much traffic you need — with a sample size calculator.Thu, 17 Sep 2026 00:00:00 GMTkonverzeA/B testingstatistical significancesample sizeA/B test calculatorCROexperimentationhttps://www.kaen.cz/en/blog/continuous-cro-why-one-off-audits-stop-working/https://www.kaen.cz/en/blog/continuous-cro-why-one-off-audits-stop-working/A one-off conversion audit finds problems, but findings age and nobody measures what worked. What continuous CRO looks like and what you need to run it.Tue, 15 Sep 2026 00:00:00 GMTkonverzecontinuous CROconversion rate optimizationconversion auditA/B testingfunnel analysisAI CRO agentexperimentationhttps://www.kaen.cz/en/blog/ai-agents-for-marketing-agencies/https://www.kaen.cz/en/blog/ai-agents-for-marketing-agencies/Where AI agents actually help a marketing agency, why agencies rarely offer CRO, and how to add continuous conversion optimization to retainers without hiring.Sat, 12 Sep 2026 00:00:00 GMTkonverzeAI agentsmarketing agencyCROconversion rate optimizationretainergrowth marketingAI CRO agenthttps://www.kaen.cz/en/blog/ai-cro-agent-vs-agency-vs-diy/https://www.kaen.cz/en/blog/ai-cro-agent-vs-agency-vs-diy/Three ways to run conversion optimization — an AI agent, an agency retainer, or in-house. What each costs, what each delivers, and how to choose.Mon, 07 Sep 2026 00:00:00 GMTkonverzeAI CRO agentCRO agencyconversion rate optimizationcomparisonA/B testinghttps://www.kaen.cz/en/blog/funnel-analysis-in-ga4/https://www.kaen.cz/en/blog/funnel-analysis-in-ga4/A step-by-step guide to conversion funnel analysis in GA4: building a funnel from events, reading drop-off between steps, and knowing which leak to fix first.Sun, 06 Sep 2026 00:00:00 GMTkonverzeGA4funnel analysisconversion funneldrop-offGoogle Analyticshttps://www.kaen.cz/en/blog/what-is-an-ai-cro-agent/https://www.kaen.cz/en/blog/what-is-an-ai-cro-agent/An AI CRO agent reads your analytics, finds funnel leaks and runs A/B tests on approval. What it does, what it can't, and how to evaluate one.Sat, 05 Sep 2026 00:00:00 GMTkonverzeAI CRO agentconversion rate optimizationA/B testingfunnel analysisGA4PostHoghttps://www.kaen.cz/en/blog/ab-testing-tools-after-google-optimize/https://www.kaen.cz/en/blog/ab-testing-tools-after-google-optimize/Google Optimize is gone. The 2026 landscape of A/B testing tools — paid and free — and how to test when your traffic is modest.Wed, 02 Sep 2026 00:00:00 GMTkonverzeA/B testingGoogle Optimizeexperimentsconversion ratetoolshttps://www.kaen.cz/en/blog/hotel-silva-case-study/https://www.kaen.cz/en/blog/hotel-silva-case-study/A conversion audit found two barriers blocking direct hotel bookings — an inquiry form and a mandatory credit card. Removing them grew bookings 23 % YoY.Mon, 31 Aug 2026 00:00:00 GMTpripadove-studiecase studydirect bookingshotelconversion auditbooking flowconversion barriershttps://www.kaen.cz/en/blog/b2b-saas-landing-page-anatomy/https://www.kaen.cz/en/blog/b2b-saas-landing-page-anatomy/How to structure a B2B SaaS landing page that converts: section order, hero, social proof, pricing and FAQ — with concrete examples.Wed, 26 Aug 2026 00:00:00 GMTkonverzeB2B SaaSlanding pagelead generationCROcopywritinghttps://www.kaen.cz/en/blog/why-free-trial-users-dont-convert/https://www.kaen.cz/en/blog/why-free-trial-users-dont-convert/Free trial users look great in your data but never pay. If you don't segment them out, you're optimizing your funnel for the wrong people.Sat, 22 Aug 2026 00:00:00 GMTkonverzefree trialSaaS conversionfunnel analyticsactivationsegmentationhttps://www.kaen.cz/en/blog/how-to-increase-website-conversion-rate/https://www.kaen.cz/en/blog/how-to-increase-website-conversion-rate/How to increase your website conversion rate without more traffic: the four levers that move the number, how to prioritize, measure and test — step by step.Tue, 18 Aug 2026 00:00:00 GMTkonverzeconversion rateCROincrease conversionsimprove conversion rategood conversion ratevalue propositiontrust signalsA/B testinghttps://www.kaen.cz/en/blog/what-a-conversion-audit-covers/https://www.kaen.cz/en/blog/what-a-conversion-audit-covers/What a website conversion audit includes, how it runs and what you get out of it — and how to tell a real audit from a generic PDF of advice.Fri, 14 Aug 2026 00:00:00 GMTkonverzeconversion auditwebsite auditCROfunnel analysisdrop-off analysishttps://www.kaen.cz/en/blog/what-is-customer-retention/https://www.kaen.cz/en/blog/what-is-customer-retention/What retention actually means, how the retention rate is calculated, and how it differs from churn, LTV and a simple repeat purchase.Tue, 11 Aug 2026 00:00:00 GMTretencecustomer retentionretention ratechurnLTVcohortshttps://www.kaen.cz/en/blog/what-is-a-website-conversion/https://www.kaen.cz/en/blog/what-is-a-website-conversion/What a conversion actually is, how conversion rate is calculated, the difference between micro and macro conversions — and how to measure them properly.Fri, 03 Jul 2026 00:00:00 GMTkonverzeconversionconversion rateCROmicro conversionGA4measurementhttps://www.kaen.cz/en/blog/why-your-blog-doesnt-bring-customers/https://www.kaen.cz/en/blog/why-your-blog-doesnt-bring-customers/Thousands of readers but no conversions? Why blog traffic doesn't turn into customers, and what to change so the blog starts paying for itself.Wed, 27 May 2026 00:00:00 GMTkonverzeblogcontent marketingconversion ratelead generationinternal linkinghttps://www.kaen.cz/en/blog/customer-retention-why-they-dont-come-back/https://www.kaen.cz/en/blog/customer-retention-why-they-dont-come-back/Acquisition is visible, retention isn't. Three signals your customers leave too early, what usually causes it, and where to start.Fri, 15 May 2026 00:00:00 GMTretencecustomer retentioncohortschurnLTVonboardinghttps://www.kaen.cz/en/blog/user-testing-what-analytics-cant-tell-you/https://www.kaen.cz/en/blog/user-testing-what-analytics-cant-tell-you/Testing your site with five people reveals more than months of analytics. What it is, how to run it, and what we found on a real project.Sun, 10 May 2026 00:00:00 GMTuxuser testingUX researchconversion barriersmoderated testingusabilityhttps://www.kaen.cz/en/blog/mobile-website-customers-see-a-different-site/https://www.kaen.cz/en/blog/mobile-website-customers-see-a-different-site/Most websites are designed and tested on desktop — even though 60–70 % of visitors arrive on a phone. What that costs, and how to fix it.Thu, 07 May 2026 00:00:00 GMTkonverzemobile UXmobile-firstconversion optimisationsite speedsession replayhttps://www.kaen.cz/en/blog/five-conversion-mistakes-costing-you-customers/https://www.kaen.cz/en/blog/five-conversion-mistakes-costing-you-customers/The most common conversion mistakes on websites: weak headlines, competing CTAs, bloated forms. Concrete examples and how to fix each one.Tue, 10 Feb 2026 00:00:00 GMTkonverzeconversion mistakesCTAformssocial prooflanding pagecopywritinghttps://www.kaen.cz/en/blog/website-speed-costs-you-money/https://www.kaen.cz/en/blog/website-speed-costs-you-money/A slow site drives visitors away and hurts SEO. How to measure speed, what Core Web Vitals are, and how to speed a site up without a developer.Tue, 03 Feb 2026 00:00:00 GMTuxsite speedCore Web VitalsPageSpeedLCPCLSINPhttps://www.kaen.cz/en/blog/website-redesign-mistakes-that-hurt-conversions/https://www.kaen.cz/en/blog/website-redesign-mistakes-that-hurt-conversions/Why does a redesign so often lower conversions? The seven most common mistakes when rebuilding a site, and how to avoid them.Tue, 27 Jan 2026 00:00:00 GMTuxwebsite redesignUXconversionsA/B testinguser testinghttps://www.kaen.cz/en/blog/website-copy-that-sells/https://www.kaen.cz/en/blog/website-copy-that-sells/A practical guide to website copywriting: the PAS framework, how to write headlines and CTAs, before-and-after examples, and a checklist.Tue, 20 Jan 2026 00:00:00 GMTuxcopywritingheadlinesCTAlanding pagevalue propositionhttps://www.kaen.cz/en/blog/why-your-website-doesnt-make-money/https://www.kaen.cz/en/blog/why-your-website-doesnt-make-money/You invested in a website and it brings no customers? The five most common reasons a site doesn't pay off, and how to diagnose which one is yours.Tue, 13 Jan 2026 00:00:00 GMTkonverzewebsite performancelead generationconversion ratevalue propositionUX barriers