Today I learned that shields.io is a thing.

Adding badges to your repo’s README has never been easier!

shields.io is a very cool thing, but it doesn’t solve the two problems I immediately ran into with TravisCI badges:

• They must be hard-coded to a GitHub username, which means they’re fragile w.r.t. forking. See #779, #974, #1892.

• They don’t support badges “per job” (read: per-OS; read: per-person-who-maintains-this-use-case), only “per branch.” See #4623, and homebrewed solutions such as exogen/badge-matrix.

exogen/badge-matrix is actually even awesomer than shields.io, in the sense that it supports “per job” badges. So for example we can generate this array of badges for my fork of HyperRogue: