Performance

Resource Hints Checker

Audit preconnect, preload, dns-prefetch, and modulepreload — the levers that make pages feel instant.

Enter any URL — we'll scan all <link rel> resource hints, third-party origins, and flag misconfigured preloads that hurt LCP.

All Hint Types

preconnect, preload, dns-prefetch, modulepreload

Missing as=

Detects preloads ignored by the browser

Origin Coverage

Flags un-preconnected third-party domains

Want a full health report?

Our full scan checks 20 categories across SEO, security, performance, accessibility, and content quality.