Heroicons

Heroicons is the official icon set from the Tailwind CSS team (Refactoring UI Inc.), shipped under an MIT license. The library is small by design — 1,288 icons spanning coordinated variants: 24×24 outline, 24×24 solid, and 20×20 mini-solid, so a single icon family can serve buttons, navigation, status badges, and hero copy without size hopping. Heroicons is drawn to pair with Tailwind's typography defaults and the rest of the Tailwind UI component kit, which means line weights, rounding, and stroke caps already feel correct alongside Tailwind components without manual adjustment. The deliberately tight scope keeps the visual language consistent and the bundle small — for projects that already use Tailwind, Heroicons is essentially a zero-decision default.