[xcjs]

Firefox 94.0.1

navigator.sendBeacon() isn't supported by my browser, so the image upload fails. Otherwise, I really like the concept.

[pmyteh]

Interesting. Worked fine here (Firefox 93.0 on Debian) and it's listed as fully supported by Mozilla: https://developer.mozilla.org/en-US/docs/Web/API/Navigator/s...

[twangist]

Confirming this: FF 94.0.1 can't upload an image. Same error: no such thing as navigator.sendBeacon().