Smashing Magazine

OCTOBER 31, 2023

The linked-up explainer provides more details, from how scores are weighted to why scores may fluctuate between test runs. Why do we need Lighthouse at all when Google also offers similar reports in PageSpeed Insights (PSI)? The truth is that the two tools were fairly distinct until PSI was updated in 2018 to use Lighthouse reporting.

Speed 97

Speed Google Website Metrics 97

Smashing Magazine

JANUARY 6, 2020

So, if we created an overview of all the things we have to keep in mind when improving performance — from the very start of the process until the final release of the website — what would that list look like? Lara Hogan’s guide on how to approach designs with a performance budget can provide helpful pointers to designers.

Performance 145

Performance Cache Network Metrics 145

Smashing Magazine

JANUARY 7, 2019

So, if we created an overview of all the things we have to keep in mind when improving performance — from the very start of the process until the final release of the website — what would that list look like? Estimated Input Latency tells us if we are hitting that threshold, and ideally, it should be below 50ms.

Performance 104

Performance Cache Network Metrics 104

Smashing Magazine

SEPTEMBER 6, 2021

In our own early tests , I found seriously diminishing returns at about 40 files. Finally, not inlining resources has an added latency cost because the file needs to be requested. mvfst (Facebook), MsQuic , (Microsoft), (Google), ngtcp2 , LSQUIC (Litespeed), picoquic , quicly (Fastly). Google Lighthouse. Implementation.

Network 105

Network Servers Cache Traffic 105