Update about measurement tools: while preparing for the meetup, I noticed that WebPageTest had, at that time, the most old-fashioned user interface, so I decided to make screenshots of GTMetrix for my presentation. Shortly afterwards, WebPageTest got a relaunch and has now one of the most elegant interfaces, clearly beating Google and probably also all of the others, but here are two screenshots and the link to WebPageTest.org, so everyone can decide for themselves.
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Update about measurement tools: while preparing for the meetup, I noticed that WebPageTest had, at that time, the most old-fashioned user interface, so I decided to make screenshots of GTMetrix for my presentation. Shortly afterwards, WebPageTest got a relaunch and has now one of the most elegant interfaces, clearly beating Google and probably also all of the others, but here are two screenshots and the link to WebPageTest.org, so everyone can decide for themselves.