Simon Hearne

Web Performance Architect

Email Twitter LinkedIn Github RSS

Web Performance Tools

Tools that I’ve created

  • Heatmap - Generate a heatmap of a webpage showing which elements of the page are slow to render
  • Request Map - Plot the domains on a web page showing how they all connect to each other
  • Third-party ID API - Determine vendor and product from a third-party URL
  • Jank Meter - Measure how smoothly a page scrolls from a bookmarklet

Other great tools

  • WebPageTest - opensource browser performance testing
  • YellowLab Tools - visualise Javascript execution
  • CDN Finder - opensource tool to identify which CDN serves domains
  • REDbot - opensource tool to test resource headers