xSpeed Scan: Free Website Speed Test

xSpeed Scan is a free website speed test you can run from Claude. Give it any public URL and it runs Google PageSpeed Insights (Lighthouse) on desktop and mobile alongside its own server probes, then grades the site 0-100 and names the exact fix for every failing check. Think PageSpeed Insights and GTmetrix, answered in plain language inside your chat, with a shareable report link.

No account, no API key and nothing to install. It works on any website: WordPress, WooCommerce, Shopify, Webflow, Next.js or hand-built.

Ask Claude things like:

• "Scan example.com and tell me the three fixes that would gain the most."
• "Why is my mobile PageSpeed score so much lower than desktop?"
• "Compare the Core Web Vitals of my site and a competitor's."
• "Is my CDN actually caching my homepage?"

What every scan checks:

• Lab performance: Lighthouse performance score, LCP, CLS, TBT and FCP on desktop and mobile, graded on Google's thresholds
• Real-user Core Web Vitals from the Chrome UX Report (LCP, INP, CLS), the numbers Google ranks on
• Server response and caching: time to first byte (TTFB), cache HIT/MISS evidence, CDN edge caching, Brotli/GZIP compression and redirect chains
• Asset optimization: render-blocking CSS and JavaScript, minification, modern image formats (WebP/AVIF), lazy loading and total page weight
• Platform detection: WordPress, the caching plugin in use, and Cloudflare or other CDNs

Every report gets a permanent shareable link with a desktop/mobile toggle, scan history and fixes ranked by points recovered, so you can send results to a client or developer.

All five tools are read-only: run_speed_scan and get_speed_scan, plus get_product_overview, list_features and get_pricing for questions about xSpeed Cache. Fair-use limit: 4 scans per user per 10 minutes. Made by WPDeveloper, the team behind the xSpeed Cache WordPress plugin.