DeepL

What is DeepL?

DeepL is a Language AI platform for translating text, files, media formats and voice. According to the page, it is trusted by millions of individuals and more than 200,000 businesses, and its specialized LLM is trained on proprietary data by thousands of language experts. The suite covers the Translator, DeepL Write, DeepL Voice, Documents and the DeepL API, and the platform supports 100+ languages.

How to use DeepL?

• Translate text in the browser: choose the source language (or use Detect language) and the target language, then enter your text in the source field of up to 500 characters and read the result in the translation panel.
• Translate speech: select the languages you want to use in the Voice demo and start speaking; real-time translation then appears as captions.
• Translate files: drag a file onto the translator or select one from your device. The platform translates documents in all major formats while preserving layout and visual context, and is built for bulk and enterprise workflows.
• Use the API: applications send a POST request to the /v2/translate endpoint with the text, source language and target language. Request and response samples are shown for cURL, JavaScript, Python and .NET. A quick-start guide is provided, and a free API key is available.

Core features of DeepL

Text translation

Translate typed or pasted text between a source and a target language directly in the DeepL Translator.

Speech and real-time voice translation

DeepL Voice is described as translating voice in real time, preserving the speaker's voice across languages, for both virtual meetings and in-person conversations. The voice demo shows German and Italian speech rendered as translated English captions.

Document translation

Drag-and-drop translation for any file type, covering all major formats and 100+ languages while preserving original formatting, layout and visual context. The platform states it is built for bulk and enterprise workflows.

DeepL Write

A writing assistant that improves business writing, with style and tone adaptations to fit a brand and target audience.

DeepL API

Developers can integrate DeepL Language AI into their own systems to scale workflows; the API has documentation, an API reference, a community, a free API key and a quick-start guide.

Integrations and apps

DeepL can be combined with productivity tools, with integrations for Microsoft Word, Google Workspace and Microsoft 365, plus a desktop app, browser extension, mobile apps and a voice desktop app.

Customization

Custom glossaries, tone control and translation quality evaluation features are offered, along with a Customization Hub.

Use cases of DeepL

Translating documents for local or international work

File translation keeps the original formatting and layout, which suits bulk and enterprise document workflows.

Customer support in multiple languages

DeepL Voice is presented in a support scenario, where an agent and customer converse in different languages and messages are translated in real time.

Internal communication and global collaboration

Businesses use the platform to communicate across languages, and customer stories describe global collaboration and decision-making at companies such as Cybozu, Daiwa Securities and Hitachi Industrial Equipment Systems.

Localization and marketing content

The platform is positioned for localization and marketing or communications work, including translating a technical website globally via the API.

Scaling multilingual products and workflows

The DeepL API lets teams integrate translation into their own systems to scale workflows and expand their global reach.

Meeting and in-person conversation translation

DeepL Voice supports both virtual meetings and in-person conversations, covering meeting captions and spoken dialogue.

Frequently asked questions about DeepL

What languages does DeepL support?

The page describes support for 100+ languages, with popular pairs such as English to Chinese and English to French, and lists languages including Arabic, Bulgarian, Chinese, Czech, Danish, Dutch, Estonian, Finnish, French, German, Greek, Hebrew, Hungarian, Indonesian, Italian, Japanese, Korean, Latvian, Lithuanian, Norwegian (bokmål), Polish, Portuguese, Portuguese (Brazilian), Romanian, Russian, Slovak, Slovenian, Spanish, Swedish, Turkish, Ukrainian and Vietnamese.

Can DeepL translate spoken conversations in real time?

Yes. DeepL Voice is described as real-time voice translation for virtual meetings and in-person conversations, and the page says the new voice feature preserves your voice in real time across languages.

Does DeepL preserve document formatting?

Document translation is stated to preserve original formatting and layout, and to handle all major formats into 100+ languages with visual context retained.

Is there anything available for developers?

Yes. The DeepL API is offered for building multilingual experiences into products, with documentation, an API reference, a quick-start guide, a community and a free API key.

Can I try DeepL before paying?

The page offers a free API key for testing the API, a free translator, and a free trial for the broader platform. Some capabilities are described as Pro or enterprise features, and certain products are offered through subscription plans such as Individual, Team, Business and Enterprise.