Browser Extension
Enhance your prompts directly inside ChatGPT, Claude, Gemini, Mistral, Poe, and Hugging Face Chat — without leaving your workflow. Calls the same API as refrase.cc/enhance.
Installation
Install from the Chrome Web Store. The extension uses your Refrase account, so you'll need a free trial or active subscription to enhance prompts.
How it works
Quick mode (popup)
Click the Refrase icon in your toolbar. Paste any prompt, pick a target model, hit Enhance. The enhanced prompt is ready to copy in 4–7 seconds. The extension auto-detects the model when you're on a known AI chat site so you don't have to pick.
In-page actions on AI chat sites
On chatgpt.com, claude.ai, gemini.google.com, and other supported sites you can:
- Right-click selected text→ choose “Refrase Enhance” (auto-detects the active model) or pick a specific model.
- Use the keyboard shortcut
Ctrl+Shift+F(orCmd+Shift+Fon macOS) to enhance whatever is selected. - Click the floating button in the bottom-right corner of supported chat pages.
The enhanced prompt is copied to your clipboard and shown in a result panel.
Guided mode (side panel)
For prompts where you're still figuring out what you want, open the side panel and use Guided mode. Refrase asks up to five clarifying questions (one at a time, each building on the previous answer), then generates the enhanced prompt with the full Q&A as context. You can skip questions or hit “Generate now” to short-circuit at any turn.
Auto-detection
The extension picks the target model based on the site you're on.
| Site | Detected model |
|---|---|
| chatgpt.com | GPT-4o |
| claude.ai | Claude Sonnet 4.6 |
| gemini.google.com | Gemini 2.5 Pro |
| chat.mistral.ai | Mistral Large 3 |
| poe.com | Claude Sonnet 4.6 |
| huggingface.co/chat | Llama 3.1 70B |
| Other sites | Manual selection from the popup |
Authentication
The extension signs in via Cognito OAuth (the same account you use on refrase.cc). Authentication happens through Chrome's identity flow; tokens are stored in browser local storage and used only to call the Refrase API. Your subscription/trial status is read from your account at request time, so the extension always reflects the same plan as the web app.
Limits
Both the extension and the web app share the same per-account quotas: 50 Quick enhances per day, 30 Guided conversations per month. Limits reset at midnight UTC (Quick) or the start of each month (Guided).
Privacy
When you trigger an enhancement, the selected text is sent to the Refrase API for processing. The extension does not collect anything else from the AI chat sites it has access to. See the privacy policy for full details.
Source
The extension is open source and so is the model-card data it sends to the enhancer as context.