"We're tight-fisted with property and money, yet think too little of wasting time, the one thing about which we should all be the toughest misers.”
Seneca

unicode-range

The unicode-range CSS descriptor sets the specific range of characters to be used from a font defined by @font-face and made available for use on the current page. If the page doesn't use any character in this range, the font is not downloaded; if it uses at least one, the whole font is downloaded.
unicode-range (@font-face) css reference