Education & ScienceKey RequiredFeatured

DeepLFree REST API

State-of-the-art neural machine translation API for high-accuracy text and document translation.

API Docs

Developer Workbench & Live ConsoleKey Required

Test real endpoints directly, inspect live JSON, or copy implementation code.

curl -X GET "https://www.deepl.com/docs-api/api/v1/resource?apiKey=YOUR_API_KEY" \
  -H "Accept: application/json" \
  -H "Authorization: Bearer <YOUR_API_KEY>"
ResponseReady / Idle

Ready for Live Evaluation

Click [ Send Request ] to dispatch a real request via FreeAPI proxy and inspect real JSON payloads.

Rate Limit
500,000 chars/month
Auth Mode
Key Required
Security & CORS
HTTPS • CORS Ready
Protocol
REST / JSON

An external API key is required to authenticate requests with DeepL. Allowance: 500,000 chars/month.

Get API Key ↗
COMPANION DEVELOPER TOOL0ms Client Sandbox

Text Readability & Content Metrics Analyzer

Calculate Flesch Reading Ease, Grade Level, Gunning Fog index, syllable counts, and reading durations in real time.

Launch Tool
Interactive Web Tool Available

Test and interact with this service in your browser using our Text Readability & Content Metrics Analyzer tool.

Open Live Tool
Head-to-Head Comparison
DeepL vs LibreTranslate: Machine Translation APIs Compared
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Frequently Asked Questions (FAQ)

Technical and integration answers for DeepL.

Yes, DeepL is listed as a free endpoint on FreeAPI Directory with an allowance of: 500,000 chars/month.
Official Service Provider Ownership: DeepL

All data feeds, trademarks, and documentation belong directly to the original API provider. FreeAPI serves purely as a discovery index and documentation reference for developers.

DMCA / Takedown Request

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