Discourse Translator

:discourse2: Summary Discourse Translator translates posts on Discourse using Microsoft, Google, or Yandex translation APIs.
:hammer_and_wrench: Repository Link https://github.com/discourse/discourse-translator
:open_book: Install Guide How to install plugins in Discourse


  • Each post is only translated once per locale which saves you :moneybag:
    • Note that language detection is also run once for every post. Be careful when enabling this on old and large forums.
  • Access Token is cached server side for faster translations.
  • Translations are rate limited to 3 per minute by default (admins can configure this value)

Translation Services Supported



  1. Follow the steps in Microsoft Translator API on Azure to obtain a subscription key. You may pick from any of the available subscription offers.

  2. In your Discourse, under Admin > Settings > Plugins, enter the subscription key that youโ€™ve obtained from the steps above.

enter subscription key

  1. In your Discourse, under Admin > Settings > Basic Setup, enable allow user locale.

Google Translator

  1. Go to https://console.developers.google.com

  2. Click on My Project

my project

  1. Click on the :heavy_plus_sign: to create a new project

  1. Enter your project name and click create

  2. Select Enable API and search for Google Cloud Translator API. Look for the enable button and click it to enable the API. Note that there is no free tier for the Google Translator API so it may prompt you to enable billing.

  3. Once youโ€™re done, click on credentials in the left menu


  1. Click create credentials and select API key. Copy the API Key and paste it into the translator google api key site setting in Discourse.

  2. In Discourse, under Admin > Settings > Basic Setup, enable allow user locale.


Name Description
translator enabled Allow inline translation of posts.
translator The provider of the translation service.
translator azure subscription key Azure Subscription Key
translator azure region Azure Region
translator azure custom subdomain Required if using a Virtual Network or Firewall for Azure Cognitive Services. Note: Only enter the custom subdomain not the full custom endpoint.
translator aws region AWS Region
translator aws key id AWS Key ID
translator aws secret access AWS secret access key
translator aws iam role AWS IAM Role
translator google api key Google API Key
translator yandex api key Yandex API Key
max translations per minute The number of translations per minute a regular user can perform.
restrict translation by group Only allowlisted groups can translate
restrict translation by poster group Only allow translation of posts made by allowlisted users

Known Issues

  • Does not translate text within polls generated by discourse-poll plugin.
  • Images are enlarged upon translating.

:discourse2: Hosted by us? This plugin is available on our Enterprise plan.


Hi, wondering on if the pull request for Libretranslate support is looking to be close to a merge state?


I see this when I click the translator button to translate a post, the post gets translated but along with it, I see this error.

1 Like

2 posts were split to a new topic: Why does Discourse Translator have the MIT license?

Did you get to the bottom of this in the end @kynic?


It doesnโ€™t appear now. :slight_smile: