17. A system comprising: one or more processors; and memory storing instructions that, when executed by the one or more processors, cause the one or more processors to: based on a received request to display text in a first font from a first font file, remotely access, via a network, the first font file to obtain data related to the first font; select, as a font fallback, a second font having at least portions of a corresponding second font file that is stored locally at the system and that is usable as a substitution for the data related to the first font; render at least a portion of the text in the selected second font using the portions of the corresponding second font file during a temporary period of time when the data related to the first font is being obtained via the network; and based at least in part on the data related to the first font being obtained locally at the system, render the portion of the text using the obtained data related to the first font.
17. A system comprising: one or more processors; and memory storing instructions that, when executed by the one or more processors, cause the one or more processors to: based on a received request to display text in a first font from a first font file, remotely access, via a network, the first font file to obtain data related to the first font; select, as a font fallback, a second font having at least portions of a corresponding second font file that is stored locally at the system and that is usable as a substitution for the data related to the first font; render at least a portion of the text in the selected second font using the portions of the corresponding second font file during a temporary period of time when the data related to the first font is being obtained via the network; and based at least in part on the data related to the first font being obtained locally at the system, render the portion of the text using the obtained data related to the first font. 19. A system as described in claim 17 , wherein the data comprises one or more layout tables or metadata that includes at least one of the following: family names, weights, sizes, typographic features, alignments, shapes, context-based substitutions, geometric descriptions, or styles for the first font specified in the first font file.