OpenDict — Quick Lookup

Lightweight Chrome translation extension — select text, get instant translations across 15 languages, with AI-powered dictionary entries, neural TTS, and a built-in PDF reader. Chrome Extension · Manifest V3 · No signup required Features Three translation engines: AI (OpenAI-compatible), Google Translate, Microsoft (Bing) Translate Any language pair: Source / target languages independently selectable; source supports Auto-detect. 15 languages: English, Chinese (Simplified / Traditional), Japanese, Korean, French, German, Spanish, Italian, Portuguese, Russian, Arabic, Hindi, Vietnamese, Thai Target-language monolingual dictionary: AI mode shows the entry from the target-language perspective — target headword, target-language phonetic, target definition, target-only example, audio for the target word. The original source word stays small with an arrow for context Human-quality pronunciation: Real human recordings (DictionaryAPI / Youdao) for English; Microsoft Edge Neural TTS for everything else; Web Speech as final fallback Keyboard shortcut: Browser-level shortcut, default Ctrl+Q (Chrome Commands API) Draggable popup: Move the floating result anywhere on screen Manual wordbook: Save translations on demand — your call, not auto-collect Multi-format export: TSV / CSV / TXT / Anki-ready, drop straight into Anki and friends Custom API endpoints: Works with any OpenAI-compatible service (DeepSeek, Moonshot, local models, etc.) Built-in PDF reader: Auto-intercepts PDF pages, renders with PDF.js, supports text selection + translation, zoom, page navigation PDF outline sidebar: Auto-extracts the document outline, click any chapter to jump PDF eye-care mode: Toggle warm-tone filter to reduce blue light for long sessions PDF smart zoom: Instant CSS-transform zoom + delayed re-render at higher resolution — no flicker PDF in-document search: Ctrl+F opens a search bar with canonical-text indexing for accurate matching across ligatures, split words, and soft hyphens; highlights via positioned overlays; Enter / Shift+Enter cycle through results PDF accurate word selection: double-click selects exactly one word using geometry-based character lookup, even when the underlying PDF text is split across multiple glyph spans