The developer-friendly, enterprise-ready translation API

Translation quality

Build products and integrations on top of DeepL’s best-in-class AI translation technology.

Custom translations

Handle brand terms and technical jargon with ease. Customize translations at scale with glossaries.

Advanced data security

Enjoy world-leading data protection and deletion of your text immediately after translation.

HTML & XML handling

Translate text that contains XML or HTML markup. Simplify web content translation.

Document translation

Translate entire Word, PowerPoint, PDF, text, and HTML files.

Language detection

Detect unknown source languages reliably with our language detection feature.

Formality

Be sure your translations say it the right way with formal/informal tone of voice awareness.

Open-source client libraries

Let developers build in their preferred programming language and ecosystem.

Find the right plan for you

Can’t find the right plan or have more questions?
Contact our Sales team or check out our Help Center.

What can you do with DeepL API?

With API access to DeepL's machine translation technology, you can make your content, apps, and products multilingual.

App and website translation

Automate app and website translation and expand to new markets in a way that scales—even with a large content catalog.

Multilingual business communications

Integrate DeepL translations with your company’s internal systems. Enable multilingual teams to communicate securely and effciently.

Translation-capable products

Let your end users break down language barriers. Add translation as a differentiating feature in your product.

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“So why DeepL? [...] The main reason overall is quality of the translation... This results in more website traffic that can be monetized, and that can also result in better magazine content that we otherwise wouldn't have”

Dennis Dirdjaja
Director of Operations at Spektrum
der Wissenschaft

Trusted by top companies worldwide

WeGlot
Weglot uses the DeepL API to help over 50,000 companies build multilingual websites and manage their translations in one place.
Kazar
Luxury fashion brand Kazar uses DeepL to grow revenue with high ROI via e-commerce marketplaces.
24Translate
Premium translation agency 24translate uses the DeepL API to deliver industry-leading speed and flexibility to its customers.
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We speak your (programming) language

The DeepL API offers officially-supported client libraries in Python, .NET, Node.js, PHP, Ruby, and Java.

Need to generate your own client? There's an OpenAPI spec for that.

Get in touch

Built something cool with our API? Need help? Just want to say hi?
Reach out to us—we’d love to hear from you!

Join the community

Join a growing community of DeepL API developers.

Build with us on GitHub

Check out our open-source client libraries, projects, and code samples. Contribute your own suggestions and examples.

Test with Postman

Fork our official Postman collection to start testing and building your DeepL integration.

Ready to try DeepL API Free?