Super cool, reminds me of metafont. See here: https://www.youtube.com/watch?v=0LR_lBEy7qU

Zycon looks fun — https://v-fonts.com/fonts/zycon

I like Wind VF — https://v-fonts.com/fonts/wind-vf

See also Metaflop Modulator: https://www.metaflop.com/modulator (It has four variable fonts, each with a lot more parameters than here.)

Creating a variable font is a lot of work, which is probably why Knuth's METAFONT never took off, but it can be a lot of fun.

Nice idea! I have heard of and seen some variable fonts at work in active gifs, but not in a sandbox setting. So I guess I am your target user ;-).

The demo works for me on Chrome, but not on Safari (12.0).

Firefox and Safari on Mac requires MacOS 10.13+ to display variable fonts. https://caniuse.com/#feat=variable-fonts

Agreed, nice site. On Windows 10, the sliders do not work in Firefox 62.0.3, and they do work in Chrome 69.

Works pretty well for me in FF mobile on Android, some sliders for visual size make the font grow as you decrease the size though.

Hadn't heard of this - I like the bevel and shadow example ... reminds me of titles in Flash ...

Anyone have a good resource on how variable fonts work? What kind of programmability does it support?

This article seems to be a good introduction: https://medium.com/variable-fonts/https-medium-com-tiro-intr...

This is pretty cool. Is it also possible to request fonts for customizations? My http://draftss.com team can definitely use something like this in designing logos.

Wow! What is the total number of available fonts?

Hello, more than 60 and counting :)