Website performance directly affects search rankings, conversion rates, and user experience. These free online tools help you measure page speed, identify bottlenecks, and get specific optimisation recommendations — without installing anything.

1. Google PageSpeed Insights

pagespeed.web.dev — Google’s official tool scores your page out of 100 for both mobile and desktop, with specific Core Web Vitals metrics (LCP, CLS, FID/INP). Since Google uses these metrics as ranking signals, this should be your primary performance benchmark.

2. GTmetrix

gtmetrix.com — Provides a waterfall chart of all resource loads, grade scoring, and actionable recommendations. Allows testing from multiple global locations. Shows Core Web Vitals, time to fully loaded, and total page size.

3. WebPageTest

webpagetest.org — The most technically detailed option. Tests from real browsers in real locations, provides filmstrip view of page loading, connection view, and advanced metrics like Time to First Byte (TTFB) and browser cache effectiveness. Ideal for deep diagnostics.

4. Pingdom Website Speed Test

tools.pingdom.com — Clean interface with performance grade, page size breakdown by content type, and load time from locations in North America, Europe, Asia-Pacific, and South America. Good for quick checks.

5. Cloudflare Observatory (formerly Speed Test)

Cloudflare Observatory — If your site is behind Cloudflare, this tool tests performance through the Cloudflare network and gives specific recommendations for Cloudflare optimisation settings (Rocket Loader, Mirage, image optimisation).

6. MXToolbox SuperTool (Email Performance)

mxtoolbox.com — While primarily a mail server diagnostic tool, MXToolbox also checks DNS propagation, SPF/DKIM/DMARC records, blacklist status, and SMTP response times — all critical for hosting providers.

Key Metrics to Watch