A simple Chrome extension that automatically translates text you select on any webpage.

• Instant Translation: Simply highlight text on a webpage to see the translation.
• Smart Language Detection: Automatically detects the source language or allows manual selection.
• Vocabulary History: Save translations to your personal word list by clicking the star icon. View and manage your history in a dedicated page.
• Text-to-Speech (TTS): Listen to the pronunciation of the original text by clicking the speaker icon.
• Skip Same Language: Intelligently skips translation popup when source and target languages are the same.
• Customizable Source & Target Languages: Choose your desired source and target languages from the settings panel.
• Toggle On/Off: Easily enable or disable the automatic translation feature.
• Adjustable Delay: Set a custom delay (in milliseconds) before the translation popup appears.
• Clean UI: The translation is displayed in a clean, non-intrusive popup.

1. Select Text: Use your mouse to highlight any text on a webpage.
2. View Translation: After a short delay, a small popup will appear next to your selection with the translated text.
3. Save to History: Click the star icon in the popup to save the translation to your history.
4. Listen to Pronunciation: Click the speaker icon above the selection to hear the text read aloud.
5. Manage History: Click the extension icon in the Chrome toolbar and then click "單字本" (History) to view your saved translations.
6. Configure Settings: Click the extension icon in the Chrome toolbar to open the settings panel. Here you can:
   • Change the source language (auto-detect or manual selection)
   • Change the target language
   • Toggle the feature on/off
   • Adjust the delay
   • Toggle auto-play speech

• Language Detection: The extension can automatically detect the source language or you can manually specify it.
• Skip Unnecessary Translation: When the source and target languages are the same, the extension will not show any translation popup.
• Optimized for Chinese: Special handling for Traditional and Simplified Chinese text detection.

To install this extension locally for development or testing:

1. Clone or download this repository to your local machine.
2. Open Google Chrome and navigate to chrome://extensions.
3. Enable "Developer mode" using the toggle switch in the top-right corner.
4. Click the "Load unpacked" button.
5. Select the directory where you cloned or downloaded the project files.
6. The "Highlighting Translate" extension should now be active in your browser.

• manifest.json: The core file that defines the extension's properties, permissions, and scripts.
• content.js: This script is injected into web pages. It listens for text selection events, detects languages, calls the translation API, and displays the result in a popup.
• popup.html & popup.js: These files create the settings panel that appears when you click the extension icon. It allows you to configure the extension's behavior including source and target languages.
• background.js: The service worker for handling background tasks, such as managing context menus or future complex logic.
• icon.svg: The icon for the extension.

• 繁體中文 (Traditional Chinese)
• 簡體中文 (Simplified Chinese)
• English
• 日本語 (Japanese)
• 한국어 (Korean)
• Español (Spanish)
• Français (French)
• Deutsch (German)
• Auto-detect (for source language)