DeepL/deepl-node

Official Node.js library for the DeepL language translation API.

What it solves

This library provides a convenient way for Node.js applications to integrate the DeepL API, allowing developers to programmatically translate text and documents into multiple languages with high quality.

How it works

Developers instantiate a DeepLClient using an API authentication key. The library provides high-level methods like translateText() and translateDocument() to send content to DeepL's servers and receive translations. It also supports advanced configuration options such as formality settings, custom instructions, and the use of glossaries to ensure specific terminology is used.

Who it’s for

Node.js developers who want to build translation features into their applications, supporting various Node.js versions (12 through 24) and TypeScript.

Highlights

  • Text and Document Translation: Supports translating strings or arrays of strings, as well as files (e.g., .docx, .pptx).
  • Document Minification: Reduces the size of large documents by replacing media with placeholders to bypass API file size limits.
  • Customization: Offers control over formality (formal vs. informal), custom instructions for translation behavior, and support for multilingual glossaries.
  • Developer Friendly: Fully supports TypeScript and provides promise-based asynchronous functions.

Related

  • Project
    anthropics/anthropic-sdk-typescript

    The official TypeScript/JavaScript SDK for accessing the Claude API, enabling developers to integrate Claude's AI capabilities into their applications.

  • Project
    xnx3/translate

    A JavaScript library for automatic HTML page translation that enables multi-language support without language files or API keys, supporting AI-powered translation and private deployment.

  • Project
    elevenlabs/elevenlabs-js

    The official Node.js SDK for ElevenLabs, enabling developers to integrate lifelike AI voice synthesis, real-time audio streaming, and voice-powered AI agents into their applications.

  • Project
    watson-developer-cloud/node-sdk

    A Node.js client library for integrating IBM Watson AI services, providing simplified authentication and API access for tools like Watson Assistant and Discovery.

  • Project
    RobotWebTools/rclnodejs

    A Node.js client library for ROS 2 that enables developing robotics applications using JavaScript and TypeScript, featuring web integration and high-performance communication.