The outcome

Publish a translation that preserves meaning, terminology, formatting, accessibility, and legal approval.

DeepL is a Language AI platform for text, document, voice, and writing workflows with glossaries, style control, and developer APIs. Translating text and office documents, improving tone and phrasing, maintaining terminology with glossaries and style rules, and embedding reviewed multilingual workflows into products. This guide narrows that broad capability into one repeatable outcome, with checkpoints that keep the source material and your judgment in the loop.

Before you begin

Set the boundary before the tool starts.

Choose one real task, identify who will use the result, and decide what evidence or test will make the result acceptable. Gather only the source material needed for that task. If the work contains confidential, personal, regulated, or client-owned information, confirm that the platform and account are approved before sharing it.

Troiana principle

AI should make the work easier to inspect. If the workflow removes the source, the owner, or the review step, redesign the workflow.

Step by step

A workflow you can repeat.

  1. 01

    Identify the authoritative source, target locale, audience, purpose, terminology, tone, privacy class, file features, reviewers, and legal or safety risk.

  2. 02

    Clean ambiguous source language, freeze approved copy, protect variables and markup, build a reviewed glossary, and preserve an untouched original.

  3. 03

    Translate a representative section with the correct locale, formality, glossary, and document mode, then resolve terminology and formatting before the full run.

  4. 04

    Have a qualified reviewer check every omission, qualifier, number, unit, name, link, term, tone, cultural issue, table, note, and required warning against the source.

  5. 05

    Run final layout and accessibility QA, obtain owner and language approval, version source and translation, and document machine assistance and future update ownership.

Working standard

What good use looks like.

  • Freeze the authoritative source first.
  • Use a reviewed glossary.
  • Require native review for high-stakes copy.

Fluent translation can still reverse meaning, omit qualifiers, mishandle names, or produce the wrong regional register. DeepL API is intended for general content and not high-risk EU AI Act applications; plan-level data handling differs, and API keys must never be placed in client code or query parameters. Use native review for legal, medical, safety, employment, financial, and public-facing material, and validate the rendered document after translation.

Official references

Check the current product documentation.

Features, plan limits, availability, and data controls change. These official pages are the starting points used for this collection.