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Zach Leatherman :11ty:

For years there has been a stinky cloud of web performance misinformation and propaganda coming from folks in the React community.

So much so that apparently a 57 score on Lighthouse is “fast” (even with 1160ms of TBT and a 5.4s LCP).

(There is *some* nuance here, of course—but we haven’t graduated to those discussions yet!)

If you too want to pretend that your slow web site is fast, use this handy guide: zachleat.com/web/lighthouse-de

2 comments
Paul Hebert

@zachleat thanks for writing this Zach!

On a project a while ago we ran into a lot of headaches trying to compare Lighthouse scores over time to track performance changes.

Even the difference between running mobile lighthouse tests on a new M1 Macbook and an older Intel-powered Macbook was huge. We ended up having to change our strategy and rely more on tools like webpagetest.org.

I wish there was more info out there about how device variability impacts these scores!

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