OTF 转 TTF
把 OpenType 字体转成 TrueType，供只认 TTF 文件的应用、游戏和设备使用。
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OTF
An OpenType font, often with PostScript-style outlines and advanced typography features. Common for professionally designed typefaces.
TTF
The classic TrueType font. Installs on any system and works in nearly every app — the safest all-round font format.