Scale multilingual workflows with the DeepL API

Empower developers and technical teams to seamlessly integrate DeepL’s secure Language AI for high-quality translation outputs across internal and external systems.

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Robust, developer-friendly implementation

The DeepL API empowers technical teams to customize DeepL’s technology for internal applications like email workflows or e-commerce websites while maintaining the highest standards of security and market leading accuracy.

Multiple format support

  • Document Translation: translate whole documents while retaining formatting in over 30 languages. Word, PowerPoint, PDF, text, and HTML file supported

  • HTML & XML handling: translate web content with XML or HTML markup, seamlessly

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Text shows document format options including .docx, .pptx, .pdf, .xlsx, .html, .txt, .xliff, and .srt, with translation options between English (US) and Japanese.

Drive consistency at scale

  • Glossaries: ensure brand terms, technical and/or industry terminologies maintain their context when translated across languages

  • Formality: choose the right tone for your audience with formal/informal language support

The image shows a glossary entry with "Sales Team" in English (EN) and its German (DE) translation "Vertriebsteam." There are options for setting the translation tone to "Formal," "Informal," or "Automatic." Additional icons include API integration, a plus sign, and a pencil.

Advanced data security and compliance

  • GDPR Compliant

  • Data centers are ISO 27001 attested

  • Your business data is never stored without your explicit consent or used to train DeepL’s models

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Accelerate time to market while keeping costs under control

Predictable costs

The DeepL API offers straightforward, predictable pricing that helps you budget accurately and scale confidently.

Built by developers, for developers

Our API documentation is crystal-clear with a suite of resources, including our Postman environment. Join our developer community on Discord to fast-track learning or make it easy for teams to code in their preferred language with client libraries.

Keep business data safe and compliant

The DeepL API runs on EU data centers, has the highest compliance and certification standards, and does not store or train with your data.

Ready to build with the DeepL API?

Design custom workflows that accelerate global growth with DeepL’s Language AI.

A 3D illustration featuring four cylindrical blocks labeled "Start" in different languages, including English, German ("Starten"), Korean, and Greek. The blocks are arranged on a dark base with a light background.
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