Małe ikony and other 85,000 icons from Icons8 icon pack follow the visual guidelines of the operating systems: Windows, iOS, Android KitKat, and Material. PNG format is free up to 100x100 px. Icons are availble for download in PNG and vector (SVG, PDF, EPS, and more).
The small icons are represented by many tiny different images or icon. For example, there may be symbols for clouds, suns, mountains, flowers, etc. The images inside the icon are small and is surrounded by a square.