Spotify isn't doing anything unique here, and it's not really a marketing campaign to explain away their UI. It's more of a showcase for hiring professionals, developers/designers/etc. Facebook has a similar one -> https://design.facebook.com/. Source: almost 3 years ago

Also, read anything published by Design @ Facebook. Source: over 3 years ago

Monitoring and Profiling: Use tools like Google's PageSpeed Insights or Web.dev Measure to analyze your page's performance and get actionable recommendations. - Source: dev.to / 8 months ago

Google PageSpeed Insights - Analyze the performance of your web pages and get suggestions for improvement. Website: https://developers.google.com/speed/pagespeed/insights/. - Source: dev.to / 8 months ago

Try Google's Lighthouse test instead (aka PageSpeed Insights). It's primarily for testing performance but also gives a score for accessibility, with tips and links to articles on how to solve any issues it detects. Source: 12 months ago

Const CompressionPlugin = require('compression-webpack-plugin');... plugins: [ new CompressionPlugin({ filename: "[path].gz[query]", algorithm: "gzip", test: /\.(js|css)$/i, }),... When I used page insights to check how fast my webpage loads, it looks like my gz files aren't recognized, or at least one of them isn't recognized. Source: about 1 year ago

Ah, well whoever you got to do it, consider running their work through PageSpeed Insights just to see how it measures up. Source: over 1 year ago