[Toxaris]

In another thread about including fonts, of course fontsize came up. Usually fonts are big so they will add to the ePUB size.
However, it is possible to reduce a font to only the characters you use (headers, notes, foreign). This helps to reduce the size tremendously.
Normal methods are via either FontSquirrel or FontForge. Usually the biggest problem is, how to determine which characters you actually need.

Therefore I created a Word macro to get the unique characters in a document. It can be for all fonts or for a specific font. With that list the font can be reduced.

Please take care, some (most?) fonts may not be distributed. Since with this you can make a subset, it might be allowed. To be safe, only use it on free fonts.

* Update. Small error