Application: https://sheeptester.github.io/words-go-here/scratch3-htmlifier/
Code source: https://sheeptester.github.io/all/
My own version:
https://jeulibre.laboratoire-bidouille.dev/scratch3/scratch2html/
My converted game: https://scratch.mit.edu/projects/307232164/
https://jeulibre.laboratoire-bidouille.dev/scratch3/scratch-demo/project.html