Prompt Enhancer
Transform rough ideas into detailed, powerful prompts for ChatGPT, Google Gemini, and Perplexity — 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
One-click enhancement with streaming responses — watch your prompt transform in real-time, token by token.
Add Context Mode
A draggable context box where the AI asks clarifying questions before crafting the perfect prompt tailored to your needs.
Multi-Platform Support
Works seamlessly on ChatGPT, Google Gemini, and Perplexity. One extension, three AI platforms.
Keyboard Shortcuts
Ctrl+Shift+E for instant enhance, Ctrl+Shift+D for context mode. Stay in your flow without touching the mouse.
Prompt History
Saves up to 20 enhanced prompts on copy or insert. Click any history item to copy it to clipboard.
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 enhance icon near the text box · Ctrl+Shift+E for instant enhance · Ctrl+Shift+D for context mode
Get Started in 4 Steps
Enable Chrome's Built-in AI
Navigate to chrome://flags and enable these two flags:
- —
Prompt API for Gemini Nano→ Set to Enabled - —
Enables 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. The welcome page will guide you through final setup.
Start Enhancing
Open ChatGPT, Google Gemini, or Perplexity, type your prompt, and click the enhance icon near the text box or press Ctrl+Shift+E.
Frequently Asked Questions
Ready to Level Up Your Prompts?
Free, private, and works entirely on your device. No API keys, no sign-up, no data leaving your browser.
Install Prompt Enhancer — It's FreeNo credit card · No sign-up · Always free