# Backtranslation

> This application translates texts back into the source language using AI.

URL: https://store.crowdin.com/backtranslation
Category: AI
Type: App
Author: Awesome Crowdin

Backtranslation with AI is a pre-export tool that takes translations created in Crowdin and converts them back into your project's source language using AI.
Here's a simple example: If your project's source language is English and you have translations in Japanese (done by either human translators or AI), the Backtranslation app will translate the Japanese text back to English based on your configured AI settings. This lets you verify the accuracy of the translations.
Backtranslation is particularly useful when working with languages you don't speak. For instance, if you're managing a project's localization but don't know Japanese, you can use backtranslation to check if the Japanese translations accurately capture your original meaning by comparing the backtranslated English text with your source content.

## Limitations

**NOTE:** Please note that AI translations are slow! 

This app does some basic caching, but it would redo translations quite often. This can result in extensive use of AI tokens and slow translations export.

It's recommended that you manually enable and then disable back-translation to ensure that Crowdin is robust and AI tokens are not wasted.

## API
The application registers a new API endpoint POST `/settings` that allows the app settings to be edited.

Sample API call 
```sh
curl --request POST \
  --url https://<crowdin-organization-name>.crowdin.com/api/v2/applications/backtranslation/api/settings \
  --header 'Authorization: Bearer e7e---your-token----a3f2' \
  --header 'Content-Type: application/json' \
  --data '{
  "projectId": 462,
  "enabled": true,
  "markUntranslated": true,
  "prompt": 55
}'
```

or

```sh
curl --request POST \
  --url https://<crowdin-organization-name>.crowdin.com/api/v2/applications/backtranslation/api/settings \
  --header 'Authorization: Bearer e7e---your-token----a3f2' \
  --header 'Content-Type: application/json' \
  --data '{
  "projectId": 462,
  "enabled": true
}'
```

The `projectId` parameter must always be included. When setting up the app for the first time in a project, you'll need to provide a `prompt` (AI Prompt ID in Crowdin). During this initial setup, both `enabled` and `markUntranslated` parameters are optional and will default to false if not specified.

Sample response:
```json
{
  "data": {
    "enabled": true,
    "prompt": 55,
    "markUntranslated": true
  }
}
```

## Backtranslation App Overview

<iframe width="560" height="315" src="https://www.youtube.com/embed/3K9VB-w_Yac?si=iLLfMWWgfKKOYtdZ" title="YouTube video player" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share" referrerpolicy="strict-origin-when-cross-origin" allowfullscreen></iframe>

## Screenshot
![Back-translation in Crowdin](https://developers.app.crowdin.net/api/media/file/5fa890e6-c1ba-499f-ab07-281553023525.png)