There are, however, plenty of tasks that require minimal effort that have a big impact on site speed. These are often overlooked in favor of lower-impact tasks.

If you want to get the best results, here are the tasks you’ll want to prioritize.

Wikipedia reduceds the JS initial payload to fit within a budget of 28 KB. In total, the year-long effort is saving 4.3 Terabytes a day of bandwidth on our users' page views.

subfont – a command line tool to statically analyse your page in order to generate the most optimal web font subsets, then inject them into your page. Now listed on Perf Tooling.

"At trivago, we are using Memcached mostly as our caching layer. We have a cache interface that “hides” the logic, so we (the developers) don’t have to think much about its implementation just to know how the interface works."

"Image compression is a biiiig subject, and we certainly haven’t covered every aspect of it here, but having discovered our preferred compression methods across each file type, these are the new guidelines for image compression at Kyan"

"Image placeholders in SVG are ready for prime time thanks to browser support and good rendering performance. By automating SVG shape creation that mimics main features visible inside an image and compressing the result appropriately, we can achieve SVG-based image placeholders weighing in at only ~400 bytes. SQIP is a tool to make this process easy to integrate into your deployments."

"Using Low Quality Image Placeholders (LQIP) ensures that your users are presented with a usable page much faster. When combined with a lazy loading technique using Intersection Observer, your users save on bandwidth too. It has been fun to experiment with LQIP!"

An online GUI for SVGO.

Nodejs-based tool for optimizing SVG vector graphics files.

Closure Compiler est un outil destiné à rendre le code Javascript téléchargeable et exécutable plus rapidement. Disponible sous la forme d'une application Java, d'une application Web ou d'une API Rest