Google Design has freely open-sourced 750 glyphs (or typographic icon/symbols) as part of the Material Design system icons pack.
Google Design is a division/place for designers to learn about design at Google and how to create products on platforms like Android and the Web.
The system icons contain icons commonly used across different apps, such as icons used for media playback, communication, content editing, connectivity, and so on. Google says they're equally useful when building for the Web, Android or iOS.
A complete live preview of the icons is available here.
A good number of the glyphs here feature in Android 5.0 Lollipop — and they also form an element of Google's Material Design renovations so developers can use them to keep applications looking sharp and up to date.
The Material Design website describes itself as follows: "We challenged ourselves to create a visual language for our users that synthesizes the classic principles of good design with the innovation and possibility of technology and science. This is material design. This spec is a living document that will be updated as we continue to develop the tenets and specifics of material design.
Here's what you can expect to find inside this big juicy (and free) icon pack:
- SVG versions of all icons in both 24px and 48px flavors
- SVG and CSS sprites of all icons
- 1x, 2x icons targeted at the Web (PNG)
- 1x, 2x, 3x icons targeted at iOS (PNG)
- Hi-dpi versions of all icons (hdpi, mdpi, xhdpi, xxhdpi, xxxhdpi) (PNG)
Developers can download a zip file, grab the latest release as a zip archive (~57MB), and install the icons using the Bower package manager. You can also find all the icons on npm.