Unlighthouse: Like Lighthouse, but it scans every single page

by miiiiiike • 3 years ago

148 20 3 years ago

Very impressed. Nice UI/UX as well. However, get the occasional "Required traces gatherer did not run", without any explanation as to why/what that infers. A [search] didn't turn up anything particularly obvious.

radicalriddler2• 3 years ago

Unrelated, but you've followed me from Ozbargain!!! I don't have the same name, but you do!

beatthatflight2• 3 years ago

haha, go the ozbargainers! :)

swyx• 3 years ago

nice! my running list of other similar tools: https://www.swyx.io/webperf-tests

djvdorp• 3 years ago

thanks for the excellent list!

ablation• 3 years ago

Thank you! Unfortunately seems like Falco's website is no more?

radicalriddler2• 3 years ago

Very nice. We have a very primitive tool for this at the moment, might look at moving to this.

luckystarr• 3 years ago

Now I only need to know what Lighthouse does to figure out what this does.

jenadine• 3 years ago

Sale here.

From https://developer.chrome.com/docs/lighthouse/overview/

Lighthouse is an open-source, automated tool for improving the quality of web pages. [...] It has audits for performance, accessibility, progressive web apps, SEO, and more

wdb• 3 years ago

It's shame it is ESM only package now for Node.js. Forces you to rewrite your tests to be able to use the latest version.

m463• 3 years ago

I had to look too...

Google Lighthouse is an open-source, automated tool for measuring the quality of web pages. ... audits performance, accessibility, and search engine optimization factors of web pages

https://en.wikipedia.org/wiki/Google_Lighthouse

extrememacaroni• 3 years ago

Hackernews: why are websites nowadays so bloated and slow??

Also hackernews: what's Lighthouse?

rado• 3 years ago

Awesome, thanks!

CSSer2• 3 years ago

What does opportunistic threading mean here? I’d have to dig up the issue, but I attempted something like this once and discovered that it’s discouraged if not forbidden to run more than one lighthouse instance at a time. If I recall correctly it has/had something to do with a lock on a certain tmp directory and a need/desire for accurate CPU profiling.

Am I crazy? Does this sound familiar to anyone? Apologies I can’t investigate deeper at the moment. I’m on mobile and will have to circle back later.

cnity• 3 years ago

You could work around this by having the Lighthouses run from a container pool.

CSSer2• 3 years ago

Certainly. I entertained similar ideas, but I abandoned such notions because I was afraid it was circumventing rather than transcending the problem. I ended up concluding that if you're going to get this close to RUM you might as well just do it.

hobbescotch• 3 years ago

Reminds me, I had to once set up lighthouse scans for thousands of sites and the only way to do this fast enough was to run the tests concurrently on a single machine. But the test results also depended on cpu load of thr machine running the tests, so we had to sample cpu load live and adjust a multiplier in the lighthouse tests to handle this so that lighthouse would not think it is the site that is being slow. I understand it’s a complex tool, but I wish lighthouse results with the cli were more reproducible!

sanitycheck• 3 years ago

I was going to mention CPU, too. I've noticed in the past that even for a single site (or web app, I guess I should say), it's possible to get somewhat a better Lighthouse score on a fast modern computer than on somethig that's a bit slower/older. I think it causes some devs to miss major performance issues.

diginova• 3 years ago

Chances are this post was inspired from Fireship's latest video - https://youtu.be/0fONene3OIA on his second channel. It is worth checking out. Amazing tool for SEO optimization and other use cases to improve web performance

Unlighthouse: Like Lighthouse, but it scans every single page

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