purgecss VS lighthouse

As a starting point, Tailwind used to use PurgeCSS [0] but I'm not sure what they use now.

[0] https://purgecss.com

A similar question was already posted here but, I think looking at the raw html, we will be able to better determine the required css than what Purgecss does.

PurgeCss

Webpack minifies JS and CSS files by default when we build them in production mode. But it does not remove useless styles or classes. For this, you can use libraries like https://purgecss.com/ Do not forget to check the dependency, connect only the functionality that you use.

When I searched online I couldn't find an "industry standard" solution to this problem. What I ended up doing was using the popular tool PurgeCSS along with a quick Python script to generate the appropriate command. What the PurgeCSS tool does is search for all your HTML files, gather all the CSS classes used, and then "purge" all the unused ones from the CSS file. You just need to declare all the HTML files you have.

Skeleventy gives you a rock-solid foundation to build fast and accessible static websites, with clean, understated design. Features include a minimal build pipeline with Laravel Mix, the Sass-powered utility class generator Gorko, Purge CSS, an HTML minifier, SEO-friendly page metadata, image lazy loading, responsive navigation, and an XML sitemap.

You could look into using PurgeCSS and its cli?

Unable to get rid of unused styles. Importing components individually and setting styles in SASS can greatly simplify builds, but several common unused styles can't be deleted using PurgeCSS and analogues due to dynamic class names.

If you’re hand-crafting your CSS, using only the exact classes you need, you’ll still probably find that your CSS file size grows as your site does. But it doesn’t need to grow too much — you can remove unused classes with tools like Purge CSS .

Google Core Vitals now represent the most important metrics to focus on when it comes to technical SEO. Google Core Vitals are a set of standardized metrics that Google uses to evaluate the user experience offered by a web page and assign it a technical SEO grade. Several tools exist to measure and report technical SEO performance, but the most reliable is Google Lighthouse.

- referred to https://github.com/GoogleChrome/lighthouse/issues/6512 but didnt see network.disable error - added staticdistdir as per https://github.com/GoogleChrome/lighthouse-ci/blob/main/docs/configuration.md,

There has been discussion about adding a visual indicator to make the mode more obvious, but it has not made it into Chrome devtools!

I haven't tried it, but you might be able to control throttling by using lighthouse to get performance data: https://github.com/GoogleChrome/lighthouse/blob/main/docs/throttling.md

When we implemented the MVP of the fintech app, we had a quite complicated form. At that time, I was still young and inexperienced. And eventually, we realized that our project was slowing down. We had to spend additional hours figuring out the reason. We had many unnecessary re-renders because we ignored basic rules related to props in React. I wanted to do everything possible to avoid such situations in the future. So, I added to the project linters like this and an additional starting configuration to package.json to run why-did-you-render. In short, this plugin issues a warning if something is re-rendered unnecessarily and suggests how to avoid it. Also, we included running Lighthouse in headless mode. Some people say that premature optimizations are bad, but for me, it's a principle: do it right from the start.

You can run a Lighthouse audit in two ways: either on the command line or in a browser. If you want to run audits on the command line, you will first need to install the Lighthouse command:

i wanted to run the lighthouse(lh) docker container on multiple EC2 instances in different regions. I'm thinking of triggering the EC2 instance with the lambda function once the lh container has audited the URL the results will be sent "SUB rest API" which will further update the UI

There's a link to what they mean by mobile network there (https://github.com/GoogleChrome/lighthouse/blob/main/docs/throttling.md) and it says:

Here's the non-psuedo code equivalent that can leverage CompressionStream rather than using a browserified-gzip-library: https://github.com/GoogleChrome/lighthouse/blob/437eb4d757c5...

We use it in Lighthouse for the exact same purpose, a URL #hash full of state. We found that modern browsers support 10mb of data in the hash. https://github.com/GoogleChrome/lighthouse/pull/12509#discus...

Lighthouse: This is an open-source tool developed by Google that allows you to audit the performance of your website. You can use Lighthouse to get a detailed report on your website's Core Web Vitals, as well as other performance metrics. You can run Lighthouse in Chrome DevTools or as a command-line tool.