Third-party request share and the Core Web Vitals
39.6% of audited sites (83,462) keep third-party requests under 10% of total network traffic (92% good INP, 95ms median), while 17.6% have 25% to 50% third-party requests (90% good INP, 104ms median).
26.8% of sites use 10% to 25% third-party requests third-party request share, and 93% of those sites have a good INP, against 92% of all sites.
16.1% of sites use over 50% third-party requests third-party request share, and 87% of those sites have a good LCP, against 82% of all sites.
Core Web Vitals pass rate
Sites with 10% to 25% third-party requests third-party request share have a good INP most often: 93%, against 92% of all sites. Sites with 25% to 50% third-party requests third-party share have it least often, at 90%.
Sites with over 50% third-party requests third-party request share have a good LCP most often: 87%, against 82% of all sites. Sites with 10% to 25% third-party requests third-party share have it least often, at 80%.
Third-party request share usage
Under 10% third-party requests is the most used: 39.6% of sites. 10% to 25% third-party requests is 26.8% of sites.
Understanding third-party request share
How external request share shapes main-thread contention and INP
Third-party request share measures the fraction of page requests served from external origins. Across 83,462 sites (39.6%) keeping third-party traffic under 10% and 56,530 sites (26.8%) between 10% and 25%, good INP reaches 92% and 93% (95ms and 103ms median). When third parties account for 25% to 50% of requests (17.6%), good INP drops to 90% (104ms median), while the 16.1% over 50% sit at 91% good INP (99ms median).
Keep third-party requests under 25% of total page traffic by self-hosting fonts and media on your primary CDN and consolidating tag-manager pixels into server-side endpoints. Across all audited sites, 39.6% stay under 10% third-party requests (92% good INP) and 17.6% sit at 25% to 50% (90% good INP).
How third-party request share plays out per platform
What the field data shows when you isolate a single CMS or framework.
WordPress 65,509 sites 51.2% of WordPress sites have under 10% third-party requests (98% good INP vs 94% over 50%).
Across 65,509 WordPress sites, 51.2% have under 10% external requests (98% good INP), 33.5% sit at 10% to 25% (96%), 12.1% sit at 25% to 50% (95%), and 3.1% exceed 50% (94%).
Shopify 8,573 stores Shopify stores with 25% to 50% third-party requests (3.7%) pass INP at 84% vs 97% under 10%.
Across Shopify storefronts, 52.6% have under 10% third-party requests (97% good INP), 43.1% sit at 10% to 25% (91%), and 3.7% sit at 25% to 50% (84% good INP, 13 points apart).
React & Next.js 9,570 sites React & Next.js sites with over 50% third-party requests (14.7%) pass field INP at 89% vs 94% at 25% to 50%.
Across 9,570 React sites, 57.3% sit in the 25% to 50% third-party request tier (94% good INP) and 14.7% have over 50% external requests (89% good INP, 103ms median).
By Arjen Karel · 210,902 crawled sites (126,761 with phone Chrome field data, October 2026). How we measured.