Here's one: I asked Claude this:

"Options for JavaScript to turn a JPEG into a vector SVG"

Result: https://gist.github.com/simonw/d2e724c357786371d7cc4b5b5bb87...

I ended up building this: https://tools.simonwillison.net/svg-render

More details here: https://simonwillison.net/2024/Oct/6/svg-to-jpg-png/