W3Techs provides information about the usage of various types of technologies on the web.
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Web & Frontend 3Infrastructure & DevOps 2History & Retro Computing 1
Half of the web still runs on Apache's web server, but one third already uses Nginx, and the gap is closing fast. We have a closer look at the detailed statistics and trends.
34.9% of the top 1000 web sites rely on Nginx. That makes it the most trusted web server on high traffic sites, just ahead of Apache.
The PNG image file format has been created in 1995 as a response to some patent issues around the then-prevailing GIF format. PNG has gained popularity ever since, and it is now used on more websites than GIF.