None of the options other than grayscale work for me.

Loved using this to ensure my products were colorblind accessible. Includes a lot more colorblind options than other tests I've used. Other tests don't include vision loss either. Worked great for a long time but more recently has been lagging or just not working at all. Think it's been a number of years since it's been updated. A new update is needed please!

It works well with the vision loss and grayscale options, but the rest of the options absolutely do not work (e.g. I still see the color red when selecting "Protanopia"). I'm using the latest version of Firefox (126.0). I have script blockers installed (uBlock origin and NoScript), maybe the problem comes from that, but it would be surprising as the vision loss and grayscale options work perfectly well.

Work and easy to use. Congrats!

The best colour blindness plugin - plenty of options and very easy to use. Has helped me to make a site for a friend who is colourblind.

Very nice idea and well done :)