icons8.com/icon/363/settings

Free flat Settings icon of Windows Metro; available for download in PNG, SVG and as a font.

icons8.com/icons/set/gear

Each Gear icon is a flat icon. All of them are vector icons. They're available for a free download in PNG of up to 100x100 px. For vectors, such as SVG, EPS, ...

www.flaticon.com/free-icons/gear

10585 gear icons. Free vector icons in SVG, PSD, PNG, EPS and ICON FONT.

developer.android.com/studio/write/image-asset-studio

Image Asset Studio helps you generate the following icon types: ... It converts the text-based icon into PNG files for different densities. ... In the Legacy tab, review the default settings and confirm you want to generate legacy, round, and Google  ...

medium.com/@webalys/die-png-die-how-to-use-vector-icons-in-your-apps-d884c9c63e93

Mar 24, 2015 ... Icons Designers produce icons in various PNG sizes, with tons of different ... You need only one asset file for a vector image, as opposed to an ...