23. The system of claim 13 , in which the font server associates the produced font subset to the received electronic document.
13. A system comprising: a font server device for providing to a computing device, upon request, an agent for analyzing content of an electronic document received by the computing device, wherein the analysis performed by the agent identifies each unique character of one or more fonts included in the content of the electronic document; wherein the font server is configured to produce, upon request from the computing device, a subset for one or more of the fonts in which each font subset includes each identified unique character of the respective font; and wherein the font server is further configured to initiate sending each font subset to the computing device, or, each font subset and additional characters to the computing device, inclusion of the additional characters being based upon a data transfer threshold.