Note from 24 December 2021
Looks like getting 4 💯 #Lighthouse scores in #Speedlify is more difficult than before… 🤔
Anyway, thanks again @zachleat for this great tool!
https://perf.nicolas-hoizey.com/nicolas-hoizey.photo/
Looks like getting 4 💯 #Lighthouse scores in #Speedlify is more difficult than before… 🤔
Anyway, thanks again @zachleat for this great tool!
https://perf.nicolas-hoizey.com/nicolas-hoizey.photo/
Why Lighthouse Performance Score Doesn’t Work
There is some correlation between the [Lighthouse] Performance Score and how well your site will do for real users. Still, lab testing alone doesn’t…
Should I please Lighthouse with modern image formats, or my visitors with progressive rendering of large images in my photography site? 🤔
Of course, this would be much easier with genaralized JPEG XL support, both modern and allowing progressive… 🤷♂️
Same page tested on PageSpeed Insights over a few hours the same day, without anything modified, and the desktop scores vary from 19 to 59… 🤷♂️
A lot of businesses rely on this crap to now if their site is "fast" enough for Google SEO! 😭
width
and height
attributes on <img>
help prevent layout shifts (CLS). Values should be unitless integers.
But #Lighthouse sees 100%
as 100
, thanks parseInt()
…
Do you think it should be improved?
The Art of Deception, Lighthouse Score Edition
I agree with Zach that the Lighthouse scores we see - shared mostly on Twitter - should be taken with a grain of salt, as they are often shared without…