Lighthouse: Repeatedly getting 0 on the Lighthouse tests for https://www.globalforestwatch.org/

[etelai]

Hi, I keep getting a 0 on the Lighthouse tests for this website: https://www.globalforestwatch.org/

As per this page https://developers.google.com/web/tools/lighthouse/scoring:
"A 0 score usually indicates an error in Lighthouse. If you see a 0 score repeatedly, please file a bug on the Lighthouse repo."

Attached is a report for reference.
Lighthouse Report-gfw-2019-09-07.pdf

Is there something I can do to be able to test the speed? Thank you.

[exterkamp]

Thanks for filing!

First off, @kaycebasques @paulirish, seems like the base scoring link goes to v2, and not the current v3, any way to fix that? It can be confusing.

@etelai I ran this site again and get a consistent 0/100 in performance. With a TTI of 40s+ and an FCP of 30s I think that this 0 is valid. Looking at the CrUX data for this site as well, 97% of Chrome users are getting a slow first paint on this page, with it's 90th percentile being 18.6s PSI link check out "Field Data".

If you want to test speed I recommend going to DevTools (F12) and running a performance analysis in the performance panel, this will give you a lot of data about what is going on in the load (guide). And to see an approximation of what Lighthouse is loading the page like, go to the network panel and turn on the throttling settings to "Fast 3G" (how to), it definitely makes this site take 30s+ for me to load/paint anything.

Hope that helps!

[etelai]

This is excellent, thank you so much for looking into this @exterkamp. I will study the resources your shared I will work on improving the site's speed with the dev team. Thank you!

[exterkamp]

Sounds great! Good luck!