Find AI Tools
DeepL

DeepL

AI translation and writing platform covering text, documents, voice and an API across more than 30 languages.

FreemiumWritingCustomer SupportAudioWeb, Windows, macOS, iOS, Android, Chrome Extension, API
Visit DeepL
DeepL screenshot

What is DeepL?

DeepL is an AI language platform built around machine translation, offering text and document translation, real-time voice translation, and the DeepL Write assistant for editing and rephrasing. It is used by individuals through a web app, desktop and mobile apps, and browser extensions, and by businesses through team plans and a developer API. The platform supports glossaries, formality controls and custom terminology for consistent translations, alongside enterprise security and data-protection features.

Key Features

Text translation

Translates text between more than 30 languages with context-aware machine translation.

Document translation

Drag-and-drop translation of Word, PowerPoint, Excel and PDF files that keeps original formatting.

DeepL Write

AI writing assistant that improves grammar, phrasing, tone and style in supported languages.

Voice translation

Real-time voice-to-voice and speech-to-text translation for meetings and conversations.

Glossaries and terminology

Custom glossaries and rules to enforce consistent wording across translations.

API and integrations

REST API plus integrations for tools such as browsers, Microsoft Office and Chrome.

Cross-platform apps

Web, Windows, macOS, iOS, Android and browser-extension access to the translator.

Pros & Cons

Advantages

  • Translation quality is widely regarded as accurate and natural, especially for European language pairs.
  • A genuinely usable free tier covers casual text translation and a limited number of documents.
  • Document translation preserves the original layout, which saves manual reformatting.
  • Apps and extensions are available across desktop, mobile and browser, so it fits into existing workflows.
  • Glossaries and formality settings give paid users control over terminology and tone.
  • Offers both a self-serve subscription and a developer API for programmatic use.

Limitations

  • Language coverage is narrower than some competitors, with around 30-plus languages rather than 100-plus.
  • Document API translation charges a minimum of 50,000 characters per file regardless of actual length.
  • API Pro has no included free characters and no volume discounts, so heavy use can become costly.
  • The most useful features, such as unlimited document translation and glossaries, sit behind paid plans.

Use Cases

Professionals translating contracts, reports and presentations while keeping the original formatting intact.

Marketing and localisation teams translating web and product copy with consistent terminology via glossaries.

Non-native writers using DeepL Write to polish emails and documents in a second language.

Developers integrating translation into apps and workflows through the DeepL API.

Travellers and remote teams using voice translation for real-time multilingual conversations.

Support and customer service staff translating incoming messages quickly inside the browser.