Smashing Magazine

DECEMBER 7, 2023

If you’re reading this before March 2024 and fire up your favorite performance monitoring tool, you’re going to to get a Core Web Vitals report like this one pulled from PageSpeed Insights: ( Large preview ) You’re likely used to seeing most of these metrics. INP will officially replace FID when it becomes an official Core Web Vital metric.

Traffic 95

Traffic Metrics Google Monitoring 95

Tim Kadlec

JUNE 21, 2022

HTTP/3 work started in 2012 with Google working on QUIC, adopted by IETF in 2017, RFC’s published in June 2022. Scalemates.com flipped the switch to enable HTTP/3 and almost immediately HTTP/3 traffic rose to ~13% of all requests on the landing page, ~49% for all pages in total. Here are my notes. What and Why?

Network 64

Network Mobile Google Cache 64

Alex Russell

MARCH 6, 2021

TL;DR: A lot has changed since 2017 when we last estimated a global baseline resource per-page resource budget of 130-170KiB. The scale of the effect can be deeply situational or hard to suss out without solid metrics. The Moto G4 , for example. Performance work often focuses on high percentile users (the slowest), after all.

Performance 124

Performance Network Cache Metrics 124

Speed Curve

OCTOBER 25, 2023

I joined the team in early 2017, and I'm blown away at how quickly the years have flown by. The best way to fight regressions is to create performance budgets on key metrics, and get alerted when they go out of bounds. Make sure you're tracking the right metrics There are a lot of performance metrics out there!

Benchmarking 62

Benchmarking Metrics Website Monitoring 62

Smashing Magazine

AUGUST 10, 2023

In fact, there’s great tooling right under the hood of most browsers in DevTools that can do many things that a tried-and-true service like WebPageTest offers, complete with recommendations for improving specific metrics. Certain tools are designed for certain metrics with certain assumptions that produce certain results.

Speed 81

Speed Monitoring Testing Network 81

Alex Russell

MARCH 31, 2022

One available proxy is the distribution of use from Google's hosted JS libraries. That is unlikely given the need for SRI annotations or the unbecoming practice of speeding up high-traffic sites, but not others. One challenge for fair inclusion is the tension between site-count-weighting and traffic-weighting.

Cache 82

Cache Government Traffic Network 82

Smashing Magazine

JANUARY 21, 2021

After the latest redesign in late 2017, it was Ilya Pukhalski on the JavaScript side of things (part-time), Michael Riethmueller on the CSS side of things (a few hours a week), and yours truly, playing mind games with critical CSS and trying to juggle a few too many things. Image source: Lighthouse Metrics ) ( Large preview ).

Performance 145

Performance Cache Mobile Network 145