tailwindlabs/heroicons

Heroicons is a free collection of hand-crafted SVG icons designed for use in web interfaces. SVG (Scalable Vector Graphics) icons are image files made from mathematical paths rather than pixels, so they stay sharp at any screen size and can be styled with CSS, changing their color or size with just a line of code. The collection comes in multiple styles: outline icons (just borders, no fill), solid icons (fully filled), and different size variants at 16x16, 20x20, and 24x24 pixels. The simplest way to use them is to copy the icon code directly from the Heroicons website and paste it into your HTML page. For more structured projects, there are official packages for React and Vue, the two most popular JavaScript UI frameworks, so you can import each icon as a component and use it like any other building block in your app. Icons can be styled using standard CSS color properties or utility classes from Tailwind CSS (the same team that made Heroicons). You would use this when building a website or web app and need clean, consistent icons for buttons, navigation, alerts, or any other UI element, without paying for an icon library or designing icons yourself. It is especially convenient if you already use Tailwind CSS or work in React or Vue. The icons are free under the MIT license, meaning you can use them in personal and commercial projects without restriction.