This is a heavily interactive web application, and JavaScript is required. Simple HTML interfaces are possible, but that is not what this is.
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Polypane. For devs who care
polypane.app
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We make good use of the Intl API in our app and on our website, so it was high time we did a Polypane-style deep-dive on it.
Check out our new article, play around with the interactive examples or hear Kilian yap about it on video. Whatever works for you!
https://polypane.app/blog/the-intl-api-the-best-browser-api-youre-not-using/
2026-04-08T11:40:50.493Z