{"id":116759,"date":"2026-02-06T15:49:00","date_gmt":"2026-02-06T14:49:00","guid":{"rendered":"https:\/\/www.i24.nl\/nl\/?p=116759"},"modified":"2026-10-12T16:23:44","modified_gmt":"2026-10-12T15:23:44","slug":"waarom-google-pagespeed-geen-realistische-meting-is","status":"publish","type":"post","link":"https:\/\/www.i24.nl\/nl\/blog\/waarom-google-pagespeed-geen-realistische-meting-is\/","title":{"rendered":"Waarom Google PageSpeed geen realistische meting is"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\"><em>Hoeveel ik ook sleutel aan optimalisaties website, server, enz, wat Google PageSpeed zegt blijft onhaalbaar. Meet ik met GTMetrix dan scoort mijn website stukken beter. Hoe kan dat nou?<\/em><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Dat is een heel bekende frustratie. Zeker voor mensen die zelf websites bouwen en willen optimaliseren.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Het korte antwoord:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Google PageSpeed Insights vertelt hoe Google vindt dat een website zou moeten presteren.<\/li>\n\n\n\n<li>GTmetrix vertelt vaak hoe snel een website daadwerkelijk is en beleefd wordt.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Dat zijn twee heel verschillende dingen.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Waarom de scores zo verschillen<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Google PageSpeed gebruikt tegenwoordig vooral Lighthouse en beoordeelt onder andere:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">-Largest Contentful Paint (LCP)<br>-Interaction to Next Paint (INP)<br>-Cumulative Layout Shift (CLS)<br>-JavaScript blocking<br>-Render blocking resources<br>-Best practices<br>-Accessibility<br>-SEO<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Daarbij wordt vaak getest op:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>een <strong>gesimuleerde trage (!!) <\/strong>mobiele telefoon<\/li>\n\n\n\n<li>een gesimuleerde 4G-verbinding<\/li>\n\n\n\n<li>CPU-throttling <strong>kunstmatig vertraagde processor (!!<\/strong>)<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Een website die op een desktop in Nederland binnen 1 seconde opent, kan daardoor alsnog een PageSpeed-score van 60 krijgen.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Waarom GTmetrix vaak beter oogt<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">GTmetrix meet meer de feitelijke prestaties:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">-Laadtijd<br>-TTFB<br>-Waterfall<br>-Requests<br>-Bestandsgrootte<br>-Visuele load<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Een website kan bijvoorbeeld:<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">-volledig zichtbaar zijn in 1,2 seconden<br>-LCP 1,4 seconden hebben<br>-geen merkbare vertraging hebben<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">en toch van Google klachten krijgen over:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">-niet gebruikte CSS<br>-third-party scripts<br>-40 KB ongebruikte JavaScript<br>-preload die &#8220;mogelijk&#8221; beter kan<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Dat zijn optimalisaties, geen gebruikersproblemen.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Is Google representatief?<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ja: Google gebruikt Core Web Vitals als rankingsignaal.<br>Slechte CWV kunnen SEO be\u00efnvloeden.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Nee: Het rankingsignaal is relatief klein.<br>Relevantie, content, backlinks en zoekintentie zijn veel belangrijker.<br>Een website met PageSpeed 55 kan makkelijk boven een website met 95 ranken.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Google heeft zelf meerdere keren aangegeven dat contentrelevantie belangrijker is dan PageSpeed.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Waar wij als WordPress-specialist naar kijken.<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Veel belangrijker dan de PageSpeed-score zijn:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">-Core Web Vitals in Search Console<br>-Werkelijke gebruikersdata (CrUX)<br>-LCP &lt; 2,5s<br>-INP &lt; 250ms<br>-CLS &lt; 0,1<br>-TTFB &lt; 800ms<br>-Geen zichtbare vertraging voor bezoekers<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Als die goed zijn, maakt het weinig uit of Lighthouse 68 of 98 geeft.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Een praktijkvoorbeeld<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">We zien regelmatig WooCommerce-sites met:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">-GTmetrix A<br>-volledig geladen binnen 2 seconden<br>-uitstekende gebruikerservaring<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">maar een mobiele PageSpeed-score van:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">58<br>63<br>71<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">vanwege:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">-Google Maps<br>-Analytics<br>-Facebook Pixel<br>-Cookiebanner<br>-Elementor assets<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Dat zijn in de praktijk prima websites.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Wat telt uiteindelijk?<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Volg deze prioriteit:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Search Console Core Web Vitals<\/li>\n\n\n\n<li>Werkelijke gebruikerservaring<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Google PageSpeed vooral zien als een adviesrapport, niet als een examen dat je moet halen.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Sterker nog: een WordPress-site met Elementor, WooCommerce, tracking scripts, cookiebanner, reviews en marketingintegraties die consequent 80+ mobiel en 95+ desktop scoort in PageSpeed is vaak al uitstekend. Een obsessie om van 85 naar 100 te gaan levert meestal nauwelijks extra SEO- of conversiewinst op.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Hoeveel ik ook sleutel aan optimalisaties website, server, enz, wat Google PageSpeed zegt blijft onhaalbaar. Meet ik met GTMetrix dan scoort mijn website stukken beter. Hoe kan dat nou? Dat is een heel bekende frustratie. Zeker voor mensen die zelf websites bouwen en willen optimaliseren. Het korte antwoord: Dat zijn twee heel verschillende dingen. Waarom 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