{"id":370,"slug":"platform-cwv-pass-rates-june-2025","title":"June 2025 platform CWV pass rates (SEJ): Duda 83.63%, Shopify 75.22%, Wix 70.76%, Squarespace 67.66%, Drupal 59.07%, WordPress 43.44%","kind":"reference","scope":"business","status":"superseded","audiences":["kevin","claude-code","candid-team"],"topics":["core-web-vitals","tech-stack","wordpress","measurement"],"reference_body":"**Claim:** Per the June 2025 CWV Technology Report (summarised by Search Engine Journal, Roger Montti, August 2025):\n\n| Platform | CWV \"Good\" (all 3) | INP \"Good\" | Notes |\n|---|---|---|---|\n| **Duda** | 83.63% | ~93% (rank #2) | Native asset pipeline; bfcache support |\n| **Shopify** | 75.22% | ~89% (rank #3) | Controlled hosting + Cloudflare CDN |\n| **Wix** | 70.76% | 86.82% | Heavy default JS (~1 MB) but optimised loading |\n| **Squarespace** | 67.66% | **95.85% (rank #1)** | Strong on INP, weaker on LCP |\n| **Drupal** | 59.07% | 85.5% (lowest INP) | Bias of Drupal sites toward better hosting |\n| **WordPress** | **43.44%** | 85.89% | Plugin/theme ecosystem entropy |\n\n**Source:** Search Engine Journal, \"2025 Core Web Vitals Challenge: WordPress Versus Everyone\" — Roger Montti, August 2025.\n\n**Confidence:** Verified.\n\n**The platform spread IS the moat.** Duda, Shopify, Squarespace, and Wix all outperform WordPress on CWV because they control hosting, theme architecture, and the asset pipeline. WordPress's 43.44% pass rate is *structural*, not coincidental — an open ecosystem of low-quality themes, page builders, and plugins compounds page weight. The agency that delivers durable CWV on WordPress (or migrates clients to Astro/Next.js/Hugo) is doing work freelancers cannot replicate. Supersedes the older 44% figure from brief 2 ([[wordpress-cwv-44pct-mobile-2025]]) with more precise per-platform numbers.","rationale_body":null,"metadata":null,"links":{"outgoing":[{"slug":"wordpress-cwv-44pct-mobile-2025","title":"WordPress mobile Core Web Vitals pass rate is ~44% — far behind Shopify (65%), Duda (83.6%), Squarespace (95.9% INP)","kind":"reference","scope":"business","link_type":"supersedes"},{"slug":"web-almanac-2025-cwv-pass-rates","title":"Web Almanac 2025: 48% mobile / 56% desktop origins pass all 3 CWV; LCP is the bottleneck","kind":"reference","scope":"business","link_type":"relates-to"}],"incoming":[{"slug":"2026-performance-budget-smb-site","title":"Reference: 2026 performance budget — SMB marketing site (Candid default targets)","kind":"reference","scope":"business","link_type":"depends-on"},{"slug":"research-brief-page-speed-moat","title":"Research brief: Page Speed as a Moat — why CWV separates the agencies from the freelancers (piece 9 of 15)","kind":"reference","scope":"business","link_type":"relates-to"},{"slug":"web-almanac-2024-cms-wordpress-perf-scores","title":"Web Almanac 2024: WordPress mobile CWV pass rate jumped 28% (2023) → 40% (2024); median mobile Lighthouse Perf 38","kind":"reference","scope":"business","link_type":"relates-to"},{"slug":"page-builder-cost-catalogue","title":"Reference: what page builders cost a small-business site — 10 categories ranked by long-term impact","kind":"reference","scope":"business","link_type":"depends-on"},{"slug":"rule-stop-quoting-page-builders-as-default-for-new-builds","title":"RULE: Stop quoting Elementor / Divi / WPBakery as the default for new Candid client builds. Block themes lead the pricing menu.","kind":"rule","scope":"business","link_type":"depends-on"},{"slug":"platform-cwv-pass-rates-nov-2025","title":"Platform mobile CWV pass rates, November 2025 CrUX Tech Report (SEJ analysis, Dec 2025)","kind":"reference","scope":"business","link_type":"supersedes"}]},"created_at":"2026-05-22T20:04:33.434Z","updated_at":"2026-05-22T21:24:25.865Z"}