TTF 转 WOFF
把桌面用的 TTF 字体封装成 WOFF 网页字体，这是样式表里 @font-face 默认要求的压缩格式。
来自
To
TTF
The classic TrueType font. Installs on any system and works in nearly every app — the safest all-round font format.
WOFF
The original web font format — a compressed font wrapper made for fast delivery to browsers via CSS.