Free Resource Hints Checker
Count dns-prefetch, preconnect, preload, and prefetch link tags.
Audit resource hints that can improve LCP and connection setup.
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Instant results for any public URL. We may email follow-up tips; no credit card required for this check.
Get a full-site SEO report in the dashboard →About this free resource hints checker
Resource hints (preconnect, dns-prefetch, preload) speed up third-party and critical asset loading. Used well they improve LCP; overused they waste bandwidth.
Count hint tags on a page as part of performance and Core Web Vitals audits.
What it checks
- link rel=preconnect, dns-prefetch, preload, prefetch
- Volume of hints vs typical best practices
Why it matters for SEO
- Faster LCP and TTFB perception on font and analytics-heavy sites
- Misconfigured preload can hurt priority of critical resources
How to use this tool
- Audit homepage and key landing pages.
- preconnect only to origins you actually use early.
- preload true LCP images and critical fonts — not everything.
Common issues we help you catch
- Dozens of unused preconnects from tag managers
- Preload without crossorigin on fonts
- Prefetching low-priority assets competing with LCP
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Frequently asked questions
- Do resource hints help SEO?
- They support Core Web Vitals and UX, which matter for mobile rankings and conversions — especially on competitive queries.