Performance

Securing Web Sites Made Them Less Accessible

Falco · Open Source WebPageTest runner

A Programmer’s Guide to Performance Analysis & Tuning on Modern CPUs

Responsible JavaScript: Part III

Location, Privilege and Performant Websites

Web Performance 101: JS, CSS, HTTP, images & fonts

Compare your mobile site speed

AirPods Pro Page Performance

Why Performance Matters | Web Fundamentals

Optimizing Encoding and Transfer Size of Text-Based Assets

Caching best practices & max-age gotchas

Page Weight Matters

Performance Budgets (Keep Request Counts Low And File Sizes Small) | Tools for Web Developers

Fantastic Front-End Performance Tricks & Why We Do Them

The Best Request Is No Request, Revisited

aFarkas/lazysizes

CSS Triggers

Web Performance: 20+ Experts Share Their Advice and Mistakes

Pinpoint Website Performance Issues - KeyCDN Support

Beginner's Guide to Front-End Performance

What Web Designers Can Do To Speed Up Mobile Websites

Front-End Performance Checklist 2019 [PDF, Apple Pages, MS Word]

Website Speed Test and Website Analysis – Free test

How Google Pagespeed works: Improve Your Score and Search Engine Ranking

jsPerf: JavaScript performance playground

Essential Image Optimization

I Used The Web For A Day On A 50 MB Budget

Perf.Rocks

Website Performance Optimization

Performance Budget Calculator