SVG font seems to be the right choice here because it uses XML. However it has been deprecated everywhere.
So is there an alternative (or an alternative format) for representing a long text which use ~70,000 glyphs. (the current font I’m interested in is currently in the ps format and installed on my system).
Or is it possible to make a single font family for storing multiple range of glyphs?
Please note there are other limitations that answers to this question might solve.