This Invoice icon is made in Material Design style developed by Google. This style is based on extremely simplified shapes, thin two-pixel lines, and is optimized for 24x24 px. Unlike other vector icon packs that have merely hundreds of icons, this icon pack contains 4,400 icons, all in the same style and quality.
This is a picture of a note or paper with two lines (the one on top being twice as long as the one on bottom). It has a grid of sorts between the lines, in the middle of the paper. It seems to show a report or graph.
Related to Invoice Icon
Related icons are the icons with matching tags, as well as all finance icons. All icons are in the same flat style. You can either download free PNG icons or buy SVG vectors