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What is the 250kB Club?

An exclusive members-only club for web pages weighing no more than 256kb.

Inspired by Bradley Taunt's 1MB.club.

But why?

I love the idea of a list of webpages that are still reasonably usable with a slow internet connection. But 1MB is, in my honest opinion, still way too much. Nobody wants to wait 10 seconds — on good days — to load a web site. And a very large chunk of the world population isn't gifted with Gigabit internet connections. The carbon footprint of a web site is also directly related to the data transfered over the wire. The 250kB Club, for example is extremely efficient thanks to its small size.

Of course, the absolute size of a website is not a perfect indicator. A page might contain a lot of text or images as important part of their content. It would be unfair to call them bloated in this case. This is why, additionally to the absolute size the ratio of visible to invisible content is shown as well.

Adding a web page

Please Request Membership here

Updating a web page

Please Update Memberships here

Removing a web page

Please Cancel Memberships here

What are those values?

The values shown in the list are URL, Total Weight, Content Ratio.

Websites listed here are downloaded and analyzed with YellowLabTools. The total weight is counted and then the size of actual content is measured and shown as a ratio. A higher ratio means more of the size is actual content.

For example: If a website has a total weight of 100kb and 60kb are the documents structure, text, images, videos and so on, then the content ratio is 60%. The rest are extras like CSS, JavaScript and so on. It is hard to say what a good ratio is but my gut feeling is that everything above 20% is pretty good already.

Hacking this page

This page needs three components to work:

Deno

The application that updates the page information is build with Typescript 4.6 and Deno 1.20. It uses no external packages except encoding/toml from the standard library.

YellowLabTools

A local (docker) version of YellowLabTools is used for the page analysis. It uses Phantomas as well as other tools to create a exhaustive metric.

Zola

The page analyser application generates markdown files that are rendered to a static web page by Zola.

git clone https://codeberg.org/koehr/250kb-club.git
# or: git clone https://git.sr.ht/~koehr/the-250kb-club 250kb-club
cd 250kb-club
mkdir -m a+rwx yltresults # for access to YLT results

And build the page with yarn build.

The website analysis functionality is implemented in analyser/metrics.ts, everything else either in analyser/toolkit.ts, index.ts or the corresponding Zola templates. Results are written as TOML front matter to content/:page-slug:.md and rendered by Zola in a later step. pages.txt is curated by hand.