Our most complete library: 19,128 SVG icons in outline and fill styles, drawn at 24, 32, and 48px. More than 40 categories, from UI and arrows to food and animals, updated since 2014.
Core icons are redrawn for each size, not just scaled: the 48px rose gets thorns and fuller leaves than the 24px one. Pick the size that matches your layout, and every line stays aligned to the pixel grid.
Use the secondary color to guide the eye. In this step list, the active Options icon picks up the accent color, while the steps ahead stay neutral.
Every icon comes in outline and fill styles, and many include a secondary color you can style on its own. Outline icons also support a custom stroke width and rounded or square corners.
Fill icons take on any color, so they blend into tinted buttons. Each icon picks up the tone of its button, from a soft purple atom to a green dial.
Matching pairs of 32px outline and fill icons, from animals and food to vehicles and tools. Browse the full library in the web app, or insert icons from your AI coding tool with the Nucleo MCP server.
Enhance your icon workflow 10x with the Nucleo app