v1.23.0

Added

• Added customInstructions parameter to translateText() to customize translation behavior with up to 10 instructions (max 300 characters each). Only supported for target languages: de, en, es, fr, it, ja, ko, zh and their variants. Note: using the customInstructions parameter will use quality_optimized model type as the default. Requests combining customInstructions and the latency_optimized model type will be rejected.

v1.22.0

Added

• Added support for the GET /v3/style_rules endpoint in the client library, the implementation can be found in the DeepLClient class. Please refer to the README for usage instructions
• Added styleId option to translateText() which allows text and document translation with style rules.

v1.21.0

Added

• Added extraRequestParameters option to text and document translation methods to pass arbitrary parameters in the request body. This can be used to access beta features or override built-in parameters (such as target_lang, source_lang, etc.).

v1.20.0

Added

• Official support for Node.js versions 20, 22 and 24

Fixed

• Fixed document minification/deminification to preserve translated content. Previously, when document minification was enabled, the deminify process would use the original minified file instead of the translated version, causing translations to be lost.
• Fixed handling of documents without media files during translation. The library now correctly processes documents that don't contain embedded media.

v1.19.0

Added

• Add new supported language codes to the translation and glossary language types.

v1.17.3

Changed

• Upgrade axios lib due to GHSA-jr5f-v2jv-69x6

v1.17.2

Added

• Added option to override translate path

v1.17.1

Added

• Update list of supported target languages

Changed

• Adjust environment variable handling to avoid side effects in the published library

v1.17.0

Added

• Added document minification as a feature before document translation, to
  allow translation of large docx or pptx files. For more info check the README.
• Added .env.example file with dotenv library for environment variables management
• Improve unit tests

Changed

• Upgrade cross-spawn library (see GHSA-3xgq-45jj-v275)

v1.16.0

Added

• Added support for the Write API in the client library, the implementation
  can be found in the DeepLClient class. Please refer to the README for usage
  instructions.

Changed

• The main functionality of the library is now also exposed via the DeepLClient
  class. Please change your code to use this over the Translator class whenever
  convenient.