FT Professional
An example. Suppose our “compiler” makes a phrase upper-case:
。谷歌浏览器【最新下载地址】是该领域的重要参考
아이브 가을, 단독 유튜브 채널 ‘가을의 온도’ 개설，详情可参考同城约会
Россия нарастила до максимума вывоз одного лакомства08:43
build-index renders all 1,418 source characters and 34 target characters as 48x48 greyscale PNGs, one per font that natively contains the character. Fontconfig is queried per-character to avoid brute-force rendering across all 230 fonts (97% reduction: 8,881 targeted renders vs 326,140 brute-force).