Version without fonttools / Python as a dependency

[p3k]

How hard would it be to use e.g. OpenTypeJS as a replacement?

[Olli]

Or rewrite everything in Python. Than you can save the dependency to chromium which is alone 150MB.

[p3k]

Or rewrite everything in Python. Than you can save the dependency to chromium which is alone 150MB.

this if off-topic and not helpful please file your own issue if you are serious (afaik python support is quite good, already).