One that is written in C and also has a Python module: https://aubio.org/

Not a fan of datalist:

• Barely works in Firefox (need to click again after initial focus);
• Doesn't work at all in Firefox mobile (if there is some magic to show the options, I don't know what is);
• In Chromium and Safari mobile (tested through appetize.io), I don't like how similar it is to a select:

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Somewhat liked Chrome's implementation in Android:

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I don't agree with the problem they aim to solve with those goals.

But today it takes several years of mastering tools and frameworks to get to that stage. HTML First principles should allow people to unlock that feeling, and level of mastery, much earlier on in their coding journey.

The onboarding process can be made easier for devs new to the project (junior or senior) with decent documentation. Just enough install/build the project in their local machine and understand the gist of the technologies.

I don't have much experience using srcset but since you are still waiting for an answer... I'll point you to what is stated in MDN's docs.

According to that, you use a "media condition" when the image is displayed in different sizes. Their example

And you use 1x, 2x, etc (like your examples) when the image will occupy the same physical size.

I'm new-ish to Linux and new to Debian, but I literally just did a (second) Debian 12 install, so I have one note about your Firefox's documentation, specifically about "chromium's suggestion" when uninstalling Firefox. https://makedebianfunagainandlearnhowtodoothercoolstufftoo.computer/doku.php?id=start:firefoxesr

Besides Firefox ESR, it came bundled with "Konqueror". Don't know if it depends on your installation's configuration, though. I selected to install "non-free" software, if it helps. So for me it didn't complain when I uninstalled Firefox ESR, it just set Konqueror as the default web browser