Google Cloud Translation

API

Google Cloud API for machine translation of text and documents

Price: Free tier, then pay per use
Access: API key or Google Cloud credentials

Docs

About

Google Cloud service that translates text between about 190 languages with its NMT model or a Translation LLM, with glossaries, custom models and DOCX, PPTX and PDF translation. Basic (v2) accepts API keys; Advanced (v3) needs Google Cloud credentials.

What you can do with it

Translate app strings and user content between about 190 languages
Translate DOCX, PPTX and PDF files while keeping their layout
Keep product and brand terms consistent with glossaries

Get started

Enable billing and the Cloud Translation API in a Google Cloud project
Create an API key for Basic (v2), or use gcloud credentials for v3

Example

# Basic (v2) with an API key
curl -X POST "https://translation.googleapis.com/language/translate/v2?key=$GOOGLE_API_KEY" \
  -H "Content-Type: application/json; charset=utf-8" \
  -d '{"q": "Hello world", "source": "en", "target": "es", "format": "text"}'

# Advanced (v3) with gcloud credentials
curl -X POST "https://translation.googleapis.com/v3/projects/$PROJECT_ID:translateText" \
  -H "Authorization: Bearer $(gcloud auth print-access-token)" \
  -H "x-goog-user-project: $PROJECT_ID" \
  -H "Content-Type: application/json; charset=utf-8" \
  -d '{"sourceLanguageCode": "en", "targetLanguageCode": "es", "contents": ["Hello world"]}'

Details

Hosting: Hosted service
Available in: Worldwide
Official SDKs: C#, Go, Java, JavaScript/TypeScript, PHP, Python, Ruby
MCP server: None
Works with: Google Cloud