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Blog / Core Web Vitals

5 Common PageSpeed Mistakes That Are Killing Your Website
February 27, 2026

5 Common PageSpeed Mistakes That Are Killing Your Website

You've run PageSpeed Insights. The scores are poor. You've optimised images, minified CSS, and still LCP stays red. Or CLS keeps spiking on client sites. Or users complain that clicks feel sluggish even though the page "loads fast". The problem isn't always obvious—some of the worst PageSpeed mistakes look like best practice at first glance.

Why AI Crawlers Need Fast, Crawlable Pages — and How to Stay Ready
February 15, 2026

Why AI Crawlers Need Fast, Crawlable Pages — and How to Stay Ready

ChatGPT, Perplexity, Claude, and Google’s AI Overviews don’t magic their answers out of thin air. They rely on systems that fetch, read, and interpret web pages. If your site is slow, times out, or hides content behind heavy client-side rendering, those systems may never get your content in the first place.

Accessibility + Core Web Vitals: the overlooked UX wins
February 12, 2026

Accessibility + Core Web Vitals: the overlooked UX wins

Core Web Vitals (LCP, INP, CLS) tend to get treated as "performance metrics". Accessibility tends to get treated as "compliance work". That split is convenient, and it's wrong in practice. A keyboard user doesn't experience your site as a Lighthouse report. They experience it as a sequence of interactions: tab, focus, type, submit, wait, recover, continue. The same bottlenecks that hurt your Web Vitals routinely break assistive-tech UX. The nice part is that the fixes often pull double duty.

Core Web Vitals Monitoring Checklist for Agencies
February 2, 2026

Core Web Vitals Monitoring Checklist for Agencies

Agency Core Web Vitals monitoring checklist: onboarding, weekly and monthly routines, deploy checks, plus a three-layer early-warning sequence to catch regressions before Search Console and SEO impact.

What Are Core Web Vitals? A Practical Guide for 2026
January 20, 2026

What Are Core Web Vitals? A Practical Guide for 2026

Core Web Vitals are a set of specific metrics that Google uses to evaluate the real-world user experience of a web page. They're not theoretical benchmarks — they're based on how actual users experience your site in the field.

Changelog #1 — From zero to one
January 15, 2026

Changelog #1 — From zero to one

This is the Apogee Watcher changelog: a periodic summary of what we built and shipped, for anyone who wants to follow along. This changelog catches up on what we built from the start of the project th...

Our approach to slow performance debugging
January 11, 2026

Our approach to slow performance debugging

When your client says the site feels slow, you need answers fast. Watcher stores test results and budget alerts in one place so you can see what changed and fix it—without juggling multiple tools.