Idea of Increase Font Icon
It is an icon of a giant letter "A" with a plus sign next to it. The letter "A" is outlined as a block letter. The plus sign is much smaller than the letter.
This Increase Font 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 6,100 icons, all in the same style and quality.