What is imp-translate?

Imp Translate is a browser extension that shows bilingual translations of web pages. When you ask it to translate a page, it displays the translation directly beneath each original paragraph, so you can read both languages side by side. Nothing is injected into the page until you explicitly request a translation, so no floating buttons or popups appear while you browse normally. The extension works across Chrome, Edge, Firefox, and Safari, including mobile versions. It connects to translation services via OpenAI-compatible APIs, Google Translate, or Microsoft Translator. Under the hood, a DOM walker, code that navigates a page's structure, identifies only currently visible text, so it handles single-page apps, content that loads as you scroll, and dynamically updated text. A shadow DOM, an isolated section of the page structure, keeps the injected translation interface from interfering with the host page's own styles. To control which parts of a page get translated or skipped, the extension uses site-specific rules stored in a plain text file following a syntax similar to ad-blockers. Rules can target individual elements to exclude them from translation or restrict translation to a specific area. Users can add custom rules through the browser's Developer Mode settings. Imp Translate is intentionally narrow: it does not translate selected words, video subtitles, documents, or input fields. It focuses on making full-page bilingual reading work reliably for the most-visited websites rather than covering every possible use case. The project is written in TypeScript.