Prompt Enhancer
Transform rough ideas into detailed, powerful prompts for ChatGPT and Google Gemini — entirely in your browser with Google's Gemini Nano
Chrome 127+ required • No API keys • No sign-up
Why Prompt Enhancer?
100% Privacy-First
Runs entirely in your browser using Chrome's built-in AI. Your prompts never leave your device or touch external servers.
Instant Enhancement
Turn 'design a website' into detailed, actionable prompts in seconds. No waiting, no API limits.
Gemini Nano Powered
Leverages Google's state-of-the-art on-device AI model for fast, intelligent prompt refinement.
Multi-Platform Support
Works seamlessly on ChatGPT and Google Gemini. One extension, multiple AI platforms.
Prompt History
Access your last 20 enhanced prompts with one click. Copy and reuse anytime from the extension popup.
Keyboard Shortcuts
Press Ctrl+Shift+E to enhance instantly. No need to click buttons while you're in the zone.
See It In Action
❌ Before
"Give a 3 day plan to Italy"
✅ After Enhancement
"Create a detailed 3-day itinerary for a first-time visitor to Italy, focusing on Rome, Florence, and Venice. Assume a moderate budget (mid-range hotels, casual dining). Include specific attractions, recommended timings for each activity, transportation options between cities (high-speed train), and suggested restaurants for lunch and dinner. Prioritize a balance of historical sites, artistic experiences, and opportunities to experience local culture. Consider including options for different interests (e.g., art lovers, foodies, history buffs). Specify estimated costs for activities and transportation where possible. Structure the itinerary with clear daily breakdowns."
Click the floating button or press Ctrl+Shift+E to enhance your prompts
Quick Setup Guide
Enable Chrome's Built-in AI
Navigate to chrome://flags and enable these two flags:
Prompt API for Gemini Nano→ Set to EnabledEnables optimization guide on device→ Set to Enabled BypassPerfRequirement
Download the AI Model
Go to chrome://components and click 'Check for update' on 'Optimization Guide On Device Model'. The model (~1.5GB) will download in the background.
Install the Extension
Add Prompt Enhancer from the Chrome Web Store (link below). The welcome page will guide you through final setup.
Start Enhancing!
Open ChatGPT or Google Gemini, type your prompt, and click the floating icon or press Ctrl+Shift+E.
Frequently Asked Questions
Built With
Ready to Level Up Your Prompts?
Join users who are already creating better prompts with AI-powered enhancement — completely free and private.
Install Prompt EnhancerNo credit card • No sign-up • Always free