Empirical compression efficiency analysis of jpegtran & jpegrescan
A side by side comparison of how to efficiently compress lossless progressive JPEGs in the light of progressive JPEGs being a better pick for UX & their advantages on mobile connections, the fact that WebPagetest now urges you to deliver progressive JPEGs because only ~7% of all JPEGs on the web are progressive and image bytesize being The New Black in the context of responsive images.
An unconference by & for WebPerf engineers
On Saturday, the 18th of May, Corinna & I headed over to Amsterdam to participate in WebPerfDays. Organized by Jeroen Tjepkema & hosted at at a lovely location called Spaces, WebPerfDays Amsterdam was a great event bringing together one hundred web performance engineers & developers from all around the world.
Put NGINX, PHP5-FPM and Varnish under Monit
In the Performance Advent Calendar, I described how to setup a high performance webserver. As a follow-up, let’s look into monitoring this setup to automagically restart unresponsive services to minimize downtime.