Improve lighthouse score / page speed insights scores

[chandan-reddy-k]

https://developers.google.com/speed/pagespeed/insights/?url=https%3A%2F%2Fdemo.vercel.store%2F&tab=mobile

The scores are not up to the mark. Is everyone seeing the same score of around 50-60? 😅

[leerob]

🎉🎉🎉

[chandan-reddy-k]

@leerob sorry I’m confused now. Isn’t page speed insights the correct measure for web vitals?

I know the lighthouse test in chrome dev tools differs from device to device but https://developers.google.com/speed/pagespeed/insights/?url=https%3A%2F%2Fdemo.vercel.store%2F&tab=mobile should return same results anywhere in the world irrespective of the device being tested on right? 🤔

And isn’t Vercel’s next js analytics an extension of google page speed insights?

[madchester]

Same here issue is reproducible.
I got a score of 65 on Desktop based from the vercel analytics.

Is it because of the template? 🤔

[SalahAdDin]

I got even worst:

But all is okay with desktop tests.

[okbel]

Thank you all for the feedback. We're currently tracking a bug here: vercel/next.js#18416
This could possibly be the one to blame, fingers crossed

[luke-denton-aligent]

Hi @okbel, I can see that the attached bug has been closed, but the Lighthouse scores are still in the orange for the Demo instance. Has that bug fix been deployed yet?

[chandan-reddy-k]

@okbel any updates here?

I still see the same level of scores and don't think vercel/next.js#18416 solved the issue 😅

[b-emini]

According to lighthouse test , it seems that one of the issue resides with the images not being properly sized. I mean they were supposed to be sized automatically as it was a new feature added to nextjs if i am not wrong but it doesnt seem to work on this case.