apolisher-chrome

APolish

A polish for your text with AI

A privacy-first Chrome extension that polishes text on any webpage using AI. Select text, click the polish button, and get AI-enhanced suggestions with visual diff comparison.

Features

Multi-Provider AI Support: Choose between OpenAI, Claude, or Gemini using your own API key
Text Polishing: Select any text and polish it with AI
Multiple Presets: Standard, Professional, Native Speaker, Simplified, Emotional Intelligence, or Custom prompts
Model Choice: Pick any model your API key can access, per provider — the list is fetched live
Quick Toggle: Enable or disable the extension from the toolbar popup
Visual Diff: See changes highlighted with insertions (green) and deletions (red)
Privacy First: Your API key stays local, no data collection or telemetry
Universal Compatibility: Works on any webpage including Gmail, Google Docs, and more

Installation

From Source

Clone the repository:

git clone https://github.com/changliu0828/apolisher-chrome.git
cd apolisher-chrome

Install dependencies:
```
npm install
```
Build the extension:
```
npm run build
```
Load in Chrome:
- Open chrome://extensions
- Enable “Developer mode”
- Click “Load unpacked”
- Select the dist folder

Usage

Setup: Choose your AI provider (OpenAI, Claude, or Gemini) and add your API key in the extension settings
Select: Highlight text on any webpage
Polish: Click the button that appears
Review: View the diff comparison in the modal
Accept: Click the checkmark to apply changes

Configuration

Access settings by clicking the extension icon or right-clicking and selecting “Options”:

AI Provider: Choose between OpenAI (GPT-5.6 Luna), Claude (Haiku 4.5), or Gemini (3.1 Flash Lite)
API Key: Your provider-specific API key (stored securely in Chrome sync storage)
Model: Pick the model for the selected provider; the list is fetched with your API key (defaults to the model above)
Prompt Presets: Choose from Standard, Professional, Native, Simplified, Emotional Intelligence, or Custom
Max Tokens: Control response length (100-4000 tokens, default: 2000)

Tech Stack

React + TypeScript - UI components
Vite - Build system with @crxjs/vite-plugin
Tailwind CSS - Styling
Chrome Extension Manifest V3 - Extension architecture
Multi-Provider AI: OpenAI (GPT-5.6 Luna), Claude (Haiku 4.5), or Gemini (3.1 Flash Lite)
Shadow DOM - Style isolation for content script
chrome.i18n - Native internationalization (10 locales)
Vitest + happy-dom - Unit tests (264 tests)

Development

Every command below is also available via make (make on its own lists the targets, make check runs type-check + lint + tests):

# Install dependencies
npm install

# Development build with HMR
npm run dev

# Production build
npm run build

# Run linter
npm run lint

# Type check
npm run type-check

# Run tests
npm run test:run

# Build and package for the Chrome Web Store
npm run package

Project Structure

src/
├── background/      # Service worker for API calls
├── content/         # Content script and UI components
├── hooks/           # Shared settings hook
├── i18n/            # Chrome i18n helpers and typed message keys
├── options/         # Settings page
├── popup/           # Toolbar popup (enable/disable toggle)
├── prompts/         # Prompt presets
├── services/        # Multi-provider AI services (OpenAI, Claude, Gemini)
├── test/            # Vitest setup, mocks, and fixtures
├── types/           # TypeScript types
└── utils/           # Utilities

Support This Project

If you find apolisher-chrome useful, please consider sponsoring! Your support helps keep this project free and open-source.

Ways to support:

⭐ Star this repository
💖 Become a sponsor (starting at $3/month)
🐛 Report bugs and contribute code
📢 Share with others who might find it useful

License

MIT

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