Idea of Header 1 Icon
It is the letters "H1" in capital letters. The letters are only outlined, they are empty on the inside. The "H" looks like a normal capital H, and the "1" is the same height as the "H" with the top section pointed diagonally towards the "H".
This is a Header 1 icon. We've made it in iOS style
, first introduced in iOS version 7 and supported in all later releases up until now (at least iOS 11). This style is based on thin two-pixel lines and is optimized for 50x50 px. Unlike other vector icon packs that have merely hundreds of icons, this icon pack contains 13,900 icons, all in the same style and quality.