DeepFlow Translator

Translate pages, selections and documents using your DeepL API key, with usage tracking and safety controls.

DeepFlow Translator lets you use your own DeepL API key to translate full web pages, selected text, and documents directly in your browser. Features Translate the current page while preserving layout. Translate only the text you select, with an inline toolbar. Open a floating editor to work on text side‑by‑side, with language swap and tone/formality options. Translate documents and XLIFF files through the DeepL Document API, with progress feedback and automatic download. Track approximate character usage before you translate and see API usage for each key. Store multiple DeepL API keys and switch between them. Light and dark themes, customizable language lists and safety confirmations. How it works You add your own DeepL API key in the extension’s settings. When you translate a page, selection, or file, the text is sent over HTTPS to the official DeepL API endpoints you configure (api-free.deepl.com or api.deepl.com). Translated text or documents are returned from DeepL and shown on the page or saved to your Downloads folder. Settings such as theme, language choices, and character thresholds are stored only in your browser’s extension storage. Privacy Your DeepL API keys are stored only in your browser’s sync/storage area and are only sent to DeepL when making translation requests. The extension does not collect analytics and does not send your browsing history or translated content to any server other than DeepL. Content is translated only when you explicitly trigger a translation (page, selection, or file). Requirements A valid DeepL API key (free or paid). If you don’t have one yet, you can request an API key from DeepL at: https://www.deepl.com/pro-api Chrome, Edge or Brave for Manifest V3 with offscreen document support; Firefox uses a separate Manifest V2 build. Disclaimer This extension is an independent project and is not affiliated with or endorsed by DeepL GmbH. All trademarks are the property of their respective owners.