fontvert

require 'unirest'

font_formats = ["otf", "ttf", "svg", "woff"]
font_formats.each do
  |format, response|
  response = Unirest::post("https://ofc.p.mashape.com/convert/", 
  {"X-Mashape-Authorization" => "***********************" }, 
  {:file => File.new("Arial.ttf", "rb"), 
  :format => "#{format}", :callback => "http://aqueous-taiga-8219.herokuapp.com/target"}
  )
end