Smartlate

A Chrome extension for smart translation and rephrasing using AI providers (OpenAI, Anthropic, or DeepSeek).

Features

• Multi-language Translation: Translate selected text to any configured language
• AI-Powered Rephrasing: Rephrase text with customizable tone (professional, casual, concise, etc.)
• Multiple AI Providers: Supports OpenAI, Anthropic (Claude), and DeepSeek
• One-Click Operation: Right-click on selected text and choose your target language
• Clipboard Integration: Translated text is automatically copied to clipboard
• Simple Menu: Flat menu structure with all languages at the top level

Installation

1. Clone this repository or download the ZIP file
2. Open Chrome and navigate to chrome://extensions/
3. Enable “Developer mode” in the top right
4. Click “Load unpacked” and select the extension directory
5. The extension icon will appear in your toolbar

Setup

1. Click the extension icon in the toolbar
2. Click “Go to Options” to configure:
   • AI Provider: Choose between OpenAI, Anthropic, or DeepSeek
   • API Key: Enter your API key for the selected provider
   • Languages: Add languages you want to translate to (e.g., Spanish, French, German)
   • Tone: Set the default rephrasing tone (professional, casual, concise, etc.)

Getting API Keys

• OpenAI: https://platform.openai.com/api-keys
• Anthropic: https://console.anthropic.com/settings/keys
• DeepSeek: https://platform.deepseek.com/api_keys

Usage

1. Select any text on a webpage
2. Right-click to open the context menu
3. Choose a language from the menu:
   • English: Rephrase in English with your chosen tone
   • Other Languages: Translate to that language AND rephrase with your tone
4. The result is automatically copied to your clipboard
5. Paste anywhere with Cmd+V (Mac) or Ctrl+V (Windows)

How It Works

• English: Only rephrases the text using the configured tone
• Other Languages: Translates to the target language AND applies the tone
• All operations use your selected AI provider
• Results are copied directly to clipboard for easy pasting

Privacy & Security

• Your API keys are stored locally in Chrome’s secure storage
• No data is sent to any server except the AI provider you configure
• The extension only has access to text you explicitly select

Permissions

• contextMenus: To add the translation options to the right-click menu
• storage: To save your settings (API keys, languages, tone)
• notifications: To confirm when text is copied
• activeTab: To work on the current page
• offscreen: To access the clipboard API
• clipboardWrite: To copy translated text to clipboard

Development

Built with Chrome Extension Manifest V3

Building for Production

To create a production-ready ZIP file for Chrome Web Store submission:

./build.sh

This will create chrome-store-submission/smartlate-[version].zip with only the necessary extension files.

File Structure

├── manifest.json          # Extension configuration
├── background.js          # Service worker handling translation logic
├── content.js             # Content script for page interaction
├── content.css            # Styles for content script
├── offscreen.js           # Offscreen document for clipboard access
├── offscreen.html         # Offscreen document HTML
├── options.html           # Settings page
├── options.js             # Settings page logic
├── popup.html             # Extension popup
├── popup.js               # Extension popup logic
├── build.sh               # Build script for packaging
└── icons/                 # Extension icons
    ├── icon16.png
    ├── icon48.png
    └── icon128.png

Technologies

• Chrome Extension APIs (Manifest V3)
• OpenAI API
• Anthropic Claude API
• DeepSeek API
• Chrome Offscreen Documents API

License

MIT License - Feel free to use and modify as needed.

Contributing

Contributions are welcome! Please feel free to submit a Pull Request.