ClueLens

A browser dictionary and translation extension with 18 lookup sources, automatic language detection, TTS pronunciation, vocabulary collection, and flexible panel layouts.

English | 中文

Features

• 18 Lookup Sources: Query 13 dictionaries, 4 translators, and 1 AI source in parallel from a single panel.
• Automatic Language Detection: Detect Chinese, Japanese, Korean, English, French, Spanish, and German to skip incompatible sources automatically.
• Pronunciation and TTS: Play source audio directly or use Web Speech API and Lingva with optional preload and auto-play.
• Flexible Surfaces: Use ClueLens as an inline floating panel, browser popup, or dedicated side panel, with context-menu and keyboard shortcut support.
• Vocabulary Book: Save words while browsing, search them later, reopen lookups, and export them as JSON or CSV.
• Material Design 3 Theming: Customize seed color, dark mode, hue, chroma, tone, and fonts, including Google Fonts and the SJTU mirror.
• Backup and Restore: Export or import settings, enabled source order, vocabulary, and supported per-source configs as JSON.

Preview

Supported Sources

Dictionaries

• Bing Dictionary
• Cambridge Dictionary
• DictionaryAPI
• DWDS
• Green's Dictionary of Slang
• Jisho
• Larousse
• Moegirl
• Open Multilingual Wordnet
• SpanishDict
• Urban Dictionary
• Wiktionary
• Zdic

Translators

• Bing Translate
• Caiyun Translate
• DeepLx
• Google Translate

AI-Assisted

• OpenAI with compatible APIs and local models

Most web-backed sources also expose an open-source-page action directly from the result card. The main exceptions are DictionaryAPI, Caiyun Translate, DeepLx, and OpenAI.

Install From Stores

• Chrome Web Store
• Firefox Add-ons

Install from Releases

Download the latest build from the Releases page.

Chrome/Chromium Browsers

1. Download and extract cluelens-xxx-chrome.zip
2. Open chrome://extensions or edge://extensions
3. Turn on Developer mode
4. Click Load unpacked
5. Choose the extracted folder

Firefox

1. Download and extract cluelens-xxx-firefox.zip
2. Open about:debugging#/runtime/this-firefox
3. Click Load Temporary Add-on
4. Select the manifest file in the extracted folder

Local Build

Requirements

• Node.js 18+
• Yarn 1.x

Install

yarn install

Optional environment variables

Create a .env file if you want to provide a default Caiyun token:

VITE_CAIYUN_DEFAULT_TOKEN=your-caiyun-token

Run in development

yarn dev

For Firefox:

yarn dev:firefox

Build locally

yarn build