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Automating Web Performance Regression Alerts
Peter Hedenskog (@soulislove) works in the performance team at the Wikimedia Foundation. Together with Tobias Lidskog and Jonathan Lee, they are the core team of sitespeed.io. At the Wikimedia Foundation we’ve been working on finding web performance regressions for a couple of years. We are slowly getting more confident in our metrics and find regressions easier. Today I wanna show you how we auto
pirosikick 2017/12/06
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MozJPEG 3.0
Kornel Lesiński (@pornelski). Web developer since “best viewed in AWeb in 640×256.” Creator of ImageOptim. London Standardista. Mozilla has done a study of image formats and concluded that WebP and JPEG XR are not a big-enough improvement over well-optimized JPEG. In the study only HEVC (H.265) was significantly better, but it’s a patent-encumbered format, so it can’t be used freely (shhhh!) It se
pirosikick 2014/12/29
JPEG

image

mozjpeg
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React's diff algorithm
Christopher Chedeau (@vjeux) is a Facebook Software Engineer in the Photos Team. Before that, he went to EPITA, a 5-year Computer Science school and majored in its R&D lab LRDE. He also worked for Curse during the nights and week-ends. React is a JavaScript library for building user interfaces developed by Facebook. It has been designed from the ground up with performance in mind. In this article
pirosikick 2014/09/04
JavaScript
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