As of the most recent Chrome User Experience Report (CrUX) release in May 2026, 55.9% of all tracked web origins pass all three Core Web Vitals simultaneously — CrUX measured over 18.4 million origins that month. That’s up from roughly 53% in September 2025, about 50% in early 2024, and just 36% back in 2022, showing steady but incomplete progress across the open web.

Passing “all three simultaneously” is the strict bar — a site with excellent CLS and INP but poor LCP still fails the overall assessment. Individually, the May 2026 metric-level pass rates were 68.6% good LCP, 81.3% good CLS, and 86.6% good INP — which makes LCP clearly the hardest metric to pass and the highest-leverage one to fix first.

The ranking consequences were immediate and measurable. Sites with LCP above 2.5 seconds saw average ranking drops of 2 to 4 positions on competitive queries, according to DigitalApplied’s March 2026 analysis. Sites sitting in the INP “Needs Improvement” range (above 200ms) saw a smaller but still measurable average drop of 0.8 positions.

Google’s own Search Central documentation frames all three metrics around one real-user-experience question: does the page load fast, respond quickly, and stay visually stable? What changed in March wasn’t the question — it was how strict the “yes” answer needs to be.

Depending on the dataset, mobile pass rates sit somewhere between 42% and 49%, against a desktop range of 56% to 63% — an 8-to-20-point gap depending on methodology, but consistently in the same direction across every source checked for this piece. LCP is the metric driving most of that gap, since mobile devices and networks make the largest content element slower to paint by default.

That gap concentrates exactly where the revenue stakes are highest: mobile now accounts for roughly 62% of all ecommerce traffic, yet mobile ecommerce conversion rates run at only about half of desktop’s — roughly 2% versus 4% across published benchmark indexes. A slow mobile experience isn’t a minor inconvenience for half the funnel; it’s friction on the majority of the traffic with the lowest baseline conversion rate already.

Correlation isn’t causation, and Google has been consistent that Core Web Vitals are one signal among many, not a guaranteed rankings lever on their own. That said, the directional data is hard to ignore: pages ranking in position 1 of Google Search are about 10% more likely to pass Core Web Vitals thresholds than pages sitting at position 9 on the same results page.

Platform choice compounds the effect at scale. Framework-based platforms like Next.js — with automatic code splitting, built-in image optimization, and server-side rendering — outperform default WordPress installations by roughly 20 percentage points on pass rate. WordPress sites can close that gap with careful optimization, but the default experience, often running 20–30 plugins on an unoptimized theme, starts from a real disadvantage.