오픈타입

여러 컬러 테이블 기술을 통해 컬러 이모지 렌더링을 지원하는 폰트 형식.

OpenType is the dominant font format for modern computing. For emoji specifically, OpenType supports several color font technologies that allow fonts to include full-color emoji glyphs:

- **COLR/CPAL**: Layered color vectors (used by Windows, Android/Chrome)
- **CBDT/CBLC**: Embedded color bitmaps (used by Google Noto Color Emoji)
- **SVG in OpenType**: SVG documents embedded in fonts (used by Firefox, Adobe)
- **sbix**: Apple's bitmap format (used by Apple Color Emoji)

Different platforms support different color font technologies, which is part of why emoji look different across devices.