I'm not parent, but experiencing the same problem. Yes, it's also very thin at the google font site, on 18 px Thin. Here is a screenshot: http://i.imgur.com/bUe

I'm not parent, but experiencing the same problem. Yes, it's also very thin at the google font site, on 18 px Thin. Here is a screenshot: http://i.imgur.com/bUe7gNs.png http://i.imgur.com/bUe7gNs.png The arrow points to the "Thin" line. Windows 10, Firefox 49.0.1 FWIW, I think it's a pretty common problem with many web fonts on certain platforms (windows?). I see it all the time. Also, thanks for the post!