Website Speed Test

Measure actual page load time, Time to First Byte (TTFB), total page size, and performance grade. Our powered backend fetches the URL directly — no third‑party proxies, full privacy control.

https://
Enter full URL (http:// or https://). We'll add https:// if missing.
Try examples: ? GetZenQuery ? Google ? GitHub ⚡ web.dev ? Wikipedia
Privacy‑first: Tests run on our server — no third parties. Only the HTML document is fetched (max 5MB). Your data stays private.

Why website speed matters: the business & UX impact

According to Google/SOASTA research, a 1‑second delay in mobile page load can reduce conversion rates by up to 20%. Core Web Vitals (LCP, FID, CLS) are now official ranking signals. Our speed test gives you a quick, transparent snapshot of how fast your HTML document responds — the foundation of any fast website.

How we measure real performance

We send an authenticated HTTP request via a privacy‑respecting CORS proxy to the URL you provide. The proxy fetches the resource and returns it to our tool, allowing us to capture precise timing: Time to First Byte (TTFB) measures server responsiveness; Total Load Time reflects the full download duration; Page Size indicates payload weight. These three pillars reveal backend efficiency, network latency, and content optimization level.

What the metrics mean 

  • TTFB (Time to First Byte) under 200ms → Excellent server & hosting performance.
  • Total Load Time under 1.5s → Great for mobile users and SEO.
  • Page Size < 500 KB → Well optimized HTML & inline assets; larger pages often require image/script minification.

Use these insights to discuss improvements with your development team or hosting provider. Combined with tools like Google PageSpeed Insights, you can create a comprehensive optimization roadmap.

Industry benchmarks & real-world case study

Case: E‑commerce store reduces load time by 40%

A mid‑sized retailer used our speed test to identify a 2.8s TTFB caused by unoptimized database queries. After implementing server‑side caching and compressing HTML output, TTFB dropped to 180ms and total page load fell from 3.2s to 1.1s. Result: mobile conversion rate increased 18% within 2 weeks. This demonstrates how even basic speed metrics directly impact revenue.

Frequently asked questions

No, our test focuses on raw server response time and initial HTML payload. This represents the critical first step of loading; full interactivity also depends on external CSS, JS, and media. Use this test to baseline server/hosting performance.

Browsers block cross‑origin requests for security. The proxy acts as a neutral relay, allowing us to fetch any publicly accessible URL. This method gives you accurate load times without needing server access.

Google recommends that a page loads under 2.5 seconds on mobile networks. Our grading reflects this: <1.5s = A (fast), 1.5–3s = B (moderate), >3s = C (needs improvement).

Test after every major deployment, CMS update, or change in hosting. We recommend weekly monitoring to catch performance regressions early.

Built on performance engineering principles – This tool was designed by getzenquery Tech team and follows industry standards (W3C Navigation Timing, HTTP Archive methodologies). References: web.dev TTFB guide, HTTP Archive, and Google's Core Web Vitals documentation. Updated March 2026 to align with modern best practices.