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Credits

What this site is built with, and who made it.

In your browser

Served to every visitor, so each carries its license notice here.

  • Geist Sans and Geist Mono

    Every letter on the site, from the wordmark down to the tabular figures in each readout. Copyright 2023 Vercel, in collaboration with basement.studio.

    Made by
    Vercel and basement.studio
  • Tailwind CSS

    The utility classes, and the slate and neutral color ramps the whole site is drawn in.

    Made by
    Tailwind Labs
  • React

    Runs the tools.

    Made by
    Meta
  • Next.js

    Builds every page as a static file, which is what lets the site run with no server at all.

    Made by
    Vercel

Hosting

Where the static files live.

  • Cloudflare Pages

    Serves the site, and counts visits with its cookieless Web Analytics. That is why there is no cookie banner.

    Made by
    Cloudflare

At build time

Used to turn the written content into pages. None of this reaches your browser.

Standards

The definitions the calculations follow.

  • Web Content Accessibility Guidelines

    The contrast checker implements the relative luminance and contrast ratio definitions from WCAG 2, including the 4.5:1 and 7:1 thresholds and what counts as large text.

    Made by
    W3C

Everything else, including the tools themselves, the color and type calculations, the icons and the mark, was made for this site.