---
title: "Blog"
description: "Read about the background of our monitoring solution, new features and case studies"
canonical: "https://www.rumvision.com/{path}blog{suffix}"
---

Breadcrumbs: [Home](https://www.rumvision.com/?format=md) > Blog

- ![thumb.rumvision-webmcp-guide.png](https://www.rumvision.com/file/upload/img/blog/thumb.rumvision-webmcp-guide.png)
    
     [### What does WebMCP mean for website performance and RUM? 
    
     ](https://www.rumvision.com/blog/what-does-webmcp-mean-for-website-performance-and-rum/?format=md)
    - {glyph:calendar\_me-1} {lang:labelPublished} September 29, 202629/09/2026
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    AI agents are becoming another way people interact with websites. But today, they often still have to use a website much like a human would: open a page, inspect the interface, find the right input or button, perform an action and then interpret the result.
- ![thumb.rumvision-x-tideways-header-dark.png](https://www.rumvision.com/file/upload/img/blog/thumb.rumvision-x-tideways-header-dark.png)
    
     [### Debugging a slow online store: from Core Web Vitals to backend code 
    
     ](https://www.rumvision.com/blog/debugging-a-slow-online-store-rumvision-x-tideways-webinar/?format=md)
    - {glyph:calendar\_me-1} {lang:labelPublished} September 29, 202629/09/2026
    - {glyph:hourglass-end} {lang:labelReadingtime} ±6 min.{lang:labelminutes}
     
    Together with Tideways, we took a real Magento shop and followed a slow Time to First Byte from real-user Core Web Vitals data all the way down to a buggy cache in the backend. Watch the webinar replay and read the key takeaways.
- ![thumb.claude-rum-mcp-case-3x-faster.png](https://www.rumvision.com/file/upload/img/blog/thumb.claude-rum-mcp-case-3x-faster.png)
    
     [### Anthropic made Claude 3x faster. The interesting part? RUM + AI 
    
     ](https://www.rumvision.com/blog/anthropic-made-claude-3x-faster-the-interesting-part-rum-ai/?format=md)
    - {glyph:calendar\_me-1} {lang:labelPublished} September 28, 202628/09/2026
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    Anthropic recently shared how their engineering team made the core Claude experience roughly 3x faster in just two weeks.
- ![thumb.crux-history-api-ad-usage-data.png](https://www.rumvision.com/file/upload/img/blog/thumb.crux-history-api-ad-usage-data.png)
    
     [### Google launches CrUX ad metrics: already live in RUMvision 
    
     ](https://www.rumvision.com/blog/google-launches-crux-ad-metrics-already-live-in-rumvision/?format=md)
    - {glyph:calendar\_me-1} {lang:labelPublished} September 15, 202615/09/2026
    - {glyph:hourglass-end} {lang:labelReadingtime} ±8 min.{lang:labelminutes}
     
    Google launches four brand-new experimental ad metrics in CrUX. How long does it take before they show up in RUMvision? Well... not that long 😉
- ![thumb.facebook-impact-hero.jpg](https://www.rumvision.com/file/upload/img/blog/thumb.facebook-impact-hero.jpg)
    
     [### Increased INP impact from Meta Pixel. Here's what we found 
    
     ](https://www.rumvision.com/blog/increased-inp-impact-from-meta-pixel/?format=md)
    - {glyph:calendar\_me-1} {lang:labelPublished} September 2, 202602/09/2026
    - {glyph:hourglass-end} {lang:labelReadingtime} ±10 min.{lang:labelminutes}
     
    Why is Meta Pixel suddenly showing up more often in slow interactions? After spotting the same INP regression across multiple websites, we dug into its click handling as well as historic versions and found some interesting clues.
- ![thumb.score-in-rumvision.png](https://www.rumvision.com/file/upload/img/blog/thumb.score-in-rumvision.png)
    
     [### How our UX pagespeed score of your real users is calculated - and why we choose to promote it 
    
     ](https://www.rumvision.com/blog/how-our-ux-pagespeed-score-of-your-real-users-is-calculated/?format=md)
    - {glyph:calendar\_me-1} {lang:labelPublished} August 27, 202627/08/2026
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    Everyone prefers to have a single score so they can easily understand where they stand. In our niche, Lighthouse is the best example. So we copied that idea, but then based on pagespeed numbers of your real users.
- ![thumb.different-core-web-vitals-tools.png](https://www.rumvision.com/file/upload/img/blog/thumb.different-core-web-vitals-tools.png)
    
     [### Understanding the difference between Lighthouse, Core Web Vitals and RUM data 
    
     ](https://www.rumvision.com/blog/understanding-the-difference-between-core-web-vitals-tools/?format=md)
    - {glyph:calendar\_me-1} {lang:labelPublished} August 17, 202617/08/2026
    - {glyph:hourglass-end} {lang:labelReadingtime} ±12 min.{lang:labelminutes}
     
    There are numerous solutions for measuring Core Web Vitals. But how do you select the right one? Learn about the differences between lab data tools like Lighthouse, field data tools like Pagespeed Insights, and real-time user monitoring like RUMvision.
- ![thumb.when-not-to-use-lighthouse-vs-rum.png](https://www.rumvision.com/file/upload/img/blog/thumb.when-not-to-use-lighthouse-vs-rum.png)
    
     [### How much does a Lighthouse score of 100 cost you? 
    
     ](https://www.rumvision.com/blog/when-not-to-use-google-lighthouse/?format=md)
    - {glyph:calendar\_me-1} {lang:labelPublished} August 11, 202611/08/2026
    - {glyph:hourglass-end} {lang:labelReadingtime} ±8 min.{lang:labelminutes}
     
    There are numerous tools available for measuring the speed of your website, making it difficult to choose. This article explains why you should not always rely on the most popular tool, Google Lighthouse.
- ![thumb.gambling-cwv.png](https://www.rumvision.com/file/upload/img/blog/thumb.gambling-cwv.png)
    
     [### Why gambling and betting operators can't afford to guess about site speed 
    
     ](https://www.rumvision.com/blog/why-gambling-and-betting-operators-can-t-afford-to-guess-about-site-speed/?format=md)
    - {glyph:calendar\_me-1} {lang:labelPublished} July 29, 202629/07/2026
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    Online gambling is one of the most speed-sensitive industries on the web. Your users arrive with intent, in the moment, often on mobile, often during a live event where seconds decide whether a bet ge
- ![thumb.image2.png](https://www.rumvision.com/file/upload/img/blog/thumb.image2.png)
    
     [### Better data and faster websites: RUMvision x TAGGRS 
    
     ](https://www.rumvision.com/blog/better-data-and-faster-websites-rumvision-x-taggrs/?format=md)
    - {glyph:calendar\_me-1} {lang:labelPublished} July 21, 202621/07/2026
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    Partnerships often start with a good conversation. We met Niels, one of the founders of TAGGRS, at an event in Amsterdam. While talking about tracking, privacy and website performance, we quickly r
- ![failed-core-web-vitals-assessment.png](https://www.rumvision.com/file/upload/img/blog/failed-core-web-vitals-assessment.png)
    
     [### Failed Core Web Vitals Assessment 
    
     ](https://www.rumvision.com/blog/core-web-vitals-assessment-failed/?format=md)
    - {glyph:calendar\_me-1} {lang:labelPublished} July 15, 202615/07/2026
    - {glyph:hourglass-end} {lang:labelReadingtime} ±7 min.{lang:labelminutes}
     
    You probably landed on this page after Pagespeed Insights told you that you have failed the Core Web Vitals assessment. And now you might be wondering why this is. In this article, we will discuss the possibilities and how you'll soon be able to pass on your Core Web Vitals.
- ![thumb.how-fast-is-fast-enough.jpg](https://www.rumvision.com/file/upload/img/blog/thumb.how-fast-is-fast-enough.jpg)
    
     [### Meet Magento UK 2026 
    
     ](https://www.rumvision.com/blog/meet-magento-uk-2026/?format=md)
    - {glyph:calendar\_me-1} {lang:labelPublished} July 7, 202607/07/2026
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    Slides and more info on the talk "How fast is fast enough" at Meet Magento UK, July 7th London
- ![thumb.bots-vs-human-traffic.png](https://www.rumvision.com/file/upload/img/blog/thumb.bots-vs-human-traffic.png)
    
     [### Keeping the bots out - real users vs machines 
    
     ](https://www.rumvision.com/blog/keeping-the-bots-out-real-users-vs-machines/?format=md)
    - {glyph:calendar\_me-1} {lang:labelPublished} June 21, 202621/06/2026
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    Traffic from AI, bots, and crawlers (ABCs) amounts to about 51% of all online traffic. For a company specifically tracking real users that raises a challenge. Who is fake? Who is real? And how do you filter that out?
- ![thumb.how-fast-is-fast-enough-einstein.png](https://www.rumvision.com/file/upload/img/blog/thumb.how-fast-is-fast-enough-einstein.png)
    
     [### Spoiler: passing Core Web Vitals isn't fast - so how fast is fast enough for your site? 
    
     ](https://www.rumvision.com/blog/if-i-pass-core-web-vitals-is-my-site-fast-enough/?format=md)
    - {glyph:calendar\_me-1} {lang:labelPublished} June 18, 202618/06/2026
    - {glyph:hourglass-end} {lang:labelReadingtime} ±12 min.{lang:labelminutes}
     
    It’s 2026 and we are still talking about optimizing web performance. You might think, haven’t we solved this by now, is every site not fast by default? And the answer to that: no definitely not. And passing Core Web Vitals? Just means you did not frustrate most of your users.
- ![fast_hosting_blog_header_16x9.svg](https://www.rumvision.com/file/upload/img/blog/fast_hosting_blog_header_16x9.svg)
    
     [### Fast hosting, slow website? Why TTFB is where performance starts, not where it ends 
    
     ](https://www.rumvision.com/blog/fast-hosting-slow-website-why-ttfb-is-where-performance-starts/?format=md)
    - {glyph:calendar\_me-1} {lang:labelPublished} June 10, 202610/06/2026
    - {glyph:hourglass-end} {lang:labelReadingtime} ±4 min.{lang:labelminutes}
     
    You switched to better hosting. Or you're paying good money for it already. And yet, your Core Web Vitals are still orange. Maybe even red. So... was the hosting a waste of money? No. But it was never going to be the whole story either. Let's break down what hosting can fix, what it can't, and how to find out which one is holding your shop back.
- ![containertiming-entries.jpg](https://www.rumvision.com/file/upload/img/containertiming-entries.jpg)
    
     [### Container Timing: measuring when components actually appear 
    
     ](https://www.rumvision.com/blog/container-timing-measuring-when-components-actually-appear/?format=md)
    - {glyph:calendar\_me-1} {lang:labelPublished} May 18, 202618/05/2026
    - {glyph:hourglass-end} {lang:labelReadingtime} ±12 min.{lang:labelminutes}
     
    Core Web Vitals are great at telling you how a page performs. But they do not always tell you when a specific part of that page became available to users.
- ![thumb.erwin-hofman-in-groningen.jpeg](https://www.rumvision.com/file/upload/img/blog/thumb.erwin-hofman-in-groningen.jpeg)
    
     [### Meet Erwin Hofman, the one who built it while the baby slept 
    
     ](https://www.rumvision.com/blog/meet-erwin-hofman-the-one-who-built-it-while-the-baby-slept/?format=md)
    - {glyph:calendar\_me-1} {lang:labelPublished} May 15, 202615/05/2026
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    If you've ever wondered who's behind the technical side of RUMvision, it's Erwin. CTO, co-founder, Google Developer Expert, and international speaker. He built version 1.0 during his paternity leave, in the hours when his daughter Hannah was asleep. Four years later, with 2.0 now live, his role is changing. And that's precisely what he wanted.
- ![thumb.rumvision-v5-tracking-script.jpg](https://www.rumvision.com/file/upload/img/blog/thumb.rumvision-v5-tracking-script.jpg)
    
     [### RUMvision v5: modernized real-user tracking 
    
     ](https://www.rumvision.com/blog/rumvision-v5-modernized-real-user-tracking/?format=md)
    - {glyph:calendar\_me-1} {lang:labelPublished} May 11, 202611/05/2026
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    RUMvision v5 is a broader tracking architecture update focused on more reliable data collection, improved SPA navigation cleanup, better beacon handling and closer alignment with modern browser APIs, while leaving older compatibility layers behind.
- ![thumb.fetch-priority-high.jpg](https://www.rumvision.com/file/upload/img/blog/thumb.fetch-priority-high.jpg)
    
     [### Optimize your LCP with fetchpriority="high" 
    
     ](https://www.rumvision.com/blog/optimize-your-lcp-with-fetchpriority-high/?format=md)
    - {glyph:calendar\_me-1} {lang:labelPublished} May 6, 202606/05/2026
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    It is a common web performance headache: you have optimized your hero images and streamlined your CSS, but your LCP scores are still stuck in the "yellow" zone. Often, the bottleneck isn't the file size- it is the order in which the browser decides to download it.
- ![metrics-missattribution-soft-navigations-diagram.png](https://www.rumvision.com/file/upload/img/metrics-missattribution-soft-navigations-diagram.png)
    
     [### Soft Navigations: finally better Core Web Vitals attribution for SPAs 
    
     ](https://www.rumvision.com/blog/soft-navigations-better-core-web-vitals-attribution-for-spas/?format=md)
    - {glyph:calendar\_me-1} {lang:labelPublished} April 16, 202616/04/2026
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    Single Page Applications have always been a bit of an awkward fit for Core Web Vitals. And not because SPAs are inherently slow.

  [{glyph:arrow-left} previous page](https://www.rumvision.com/blog/?p=1&format=md)- [Pagina 1](https://www.rumvision.com/blog/?p=1&format=md)
- [Pagina 2](https://www.rumvision.com/blog/?p=2&format=md)
- [Pagina 3](https://www.rumvision.com/blog/?p=3&format=md)
- […](#)
 
 [{glyph:arrow-right} next page](https://www.rumvision.com/blog/?p=2&format=md)  ### Tags

- [Core Web Vitals](https://www.rumvision.com/{path}blog{suffix}?tag=core-web-vitals&format=md)
- [RUMvision](https://www.rumvision.com/{path}blog{suffix}?tag=rumvision&format=md)
- [Browser APIs](https://www.rumvision.com/{path}blog{suffix}?tag=browser-apis&format=md)
- [Public talks](https://www.rumvision.com/{path}blog{suffix}?tag=public-talks&format=md)
- [INP](https://www.rumvision.com/{path}blog{suffix}?tag=inp&format=md)
- [Real User Monitoring](https://www.rumvision.com/{path}blog{suffix}?tag=real-user-monitoring&format=md)
- [TTFB](https://www.rumvision.com/{path}blog{suffix}?tag=ttfb&format=md)
- [Google Lighthouse](https://www.rumvision.com/{path}blog{suffix}?tag=google-lighthouse&format=md)
- [Origin Trial](https://www.rumvision.com/{path}blog{suffix}?tag=origin-trial&format=md)
- [UX](https://www.rumvision.com/{path}blog{suffix}?tag=ux&format=md)
- [Caching](https://www.rumvision.com/{path}blog{suffix}?tag=caching&format=md)
- [CrUX](https://www.rumvision.com/{path}blog{suffix}?tag=crux&format=md)
- [LoAF](https://www.rumvision.com/{path}blog{suffix}?tag=loaf&format=md)
- [Team](https://www.rumvision.com/{path}blog{suffix}?tag=team&format=md)
- [Google Ads](https://www.rumvision.com/{path}blog{suffix}?tag=google-ads&format=md)
- [LCP](https://www.rumvision.com/{path}blog{suffix}?tag=lcp&format=md)
- [Baseline](https://www.rumvision.com/{path}blog{suffix}?tag=baseline&format=md)
- [SEO](https://www.rumvision.com/{path}blog{suffix}?tag=seo&format=md)
- [Feature](https://www.rumvision.com/{path}blog{suffix}?tag=feature&format=md)
- [Google Chrome](https://www.rumvision.com/{path}blog{suffix}?tag=google-chrome&format=md)
- [Pagespeed Insights](https://www.rumvision.com/{path}blog{suffix}?tag=pagespeed-insights&format=md)
- [SPA](https://www.rumvision.com/{path}blog{suffix}?tag=spa&format=md)
- [FID](https://www.rumvision.com/{path}blog{suffix}?tag=fid&format=md)
- [Speculation Rules](https://www.rumvision.com/{path}blog{suffix}?tag=speculation-rules&format=md)
- [Trends](https://www.rumvision.com/{path}blog{suffix}?tag=trends&format=md)
- [Bot traffic](https://www.rumvision.com/{path}blog{suffix}?tag=bot-traffic&format=md)
- [MCP](https://www.rumvision.com/{path}blog{suffix}?tag=mcp&format=md)