This icon represents OTF. It is rectangle shape that has the right hand top folded over to include a triangle shape there. The middle of the shape has the letters OTF centered towards the bottom.
This is a OTF Filled 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 13,100 icons, all in the same style and quality.