A simple Ruby interface to Bing's translation API.
Latest commit 20b273c Sep 15, 2016 @kamilbednarz kamilbednarz committed with Translator object to recover from failed authentication attempts (#28)
* Translator object to recover from failed authentication attempts

* Fix one more place where translator should be able to recover from authentication error.


Bing Translator

Gem Build Status

This gem wraps the Microsoft Bing SOAP Translate API. I am in no way affiliated with Microsoft or Bing. Use this gem at your own risk.

Released under MIT. Tested against MRI 2.1.0, 2.0.0 and 1.9.3, and jruby (1.9 mode).


To use this rubygem:

$ sudo gem install bing_translator

With bundler:

gem "bing_translator", "~> 4.5.0"


Version 2.0.0+ of bing_translator uses the new OAuth-based Bing authentication.

Documentation on the Microsoft Translator API is here

bing_translator is also smart about requesting the token, and handles this behind the scenes. It will only request a token if it knows the old one expired (X seconds from when we requested the last token, where X is given to us when we make the request. As of this writing, X is consistently 10 minutes).

Getting a Client ID and Secret

To sign up for the free tier (as of this writing), do the following:

  1. Go here
  2. Sign in with valid MSN credentials.
  3. On the right side, click 'SIGN UP', under the $0.00 option.
  4. Read and accept the terms and conditions and click the big 'SIGN UP' button.
  5. Create a new application. Fill in a unique client ID, give it a valid name, give it a valid redirect URI (not actually used by the Bing Translator API, so it can be anything) and hit 'CREATE'.
  6. Click on the name of your application to see the info again. You'll need the 'Client ID' and 'Client secret' fields.


require 'rubygems'
require 'bing_translator'

# Specify all arguments
translator = BingTranslator.new('YOUR_CLIENT_ID', 'YOUR_CLIENT_SECRET', false, 'AZURE_ACCOUNT_KEY')

# Or... Specify only required arguments
translator = BingTranslator.new('YOUR_CLIENT_ID', 'YOUR_CLIENT_SECRET')

spanish = translator.translate('Hello. This will be translated!', :from => 'en', :to => 'es')

# without :from for auto language detection
spanish = translator.translate('Hello. This will be translated!', :to => 'es')

locale = translator.detect('Hello. This will be translated!') # => :en

# The speak method calls a text-to-speech interface in the supplied language.
# It does not translate the text. Format can be 'audio/mp3' or 'audio/wav'

audio = translator.speak('Hello. This will be spoken!', :language => :en, :format => 'audio/mp3', :options => 'MaxQuality')
open('file.mp3', 'wb') { |f| f.write audio }

# Account balance
translator.balance # => 20000

# get_access_token example
# Useful, e.g., for using bing_translator in a web application frontend
def get_access_token
    translator = BingTranslator.new('YOUR_CLIENT_ID', 'YOUR_CLIENT_SECRET', false, 'AZURE_ACCOUNT_KEY')
    token = translator.get_access_token
    token[:status] = 'success'
  rescue Exception => exception
    YourApp.error_logger.error("Bing Translator: \"#{exception.message}\"")
    token = { :status => exception.message }