
Transform rough ideas into detailed, powerful prompts for ChatGPT, Google Gemini, Claude, and Perplexity, entirely in your browser with Google's Gemini Nano.
Chrome 138+ required · No API keys · No sign-up
Runs entirely in your browser using Chrome's built-in AI. Your prompts never leave your device or touch external servers.
One-click enhancement with streaming responses. Watch your prompt transform in real-time, token by token.
A draggable context box where the AI asks clarifying questions before crafting the perfect prompt tailored to your needs.
Works seamlessly on ChatGPT, Google Gemini, Claude, and Perplexity. One extension, four AI platforms.
Ctrl+Shift+E for instant enhance, Ctrl+Shift+D for context mode. Stay in your flow without touching the mouse.
Saves up to 20 enhanced prompts on copy or insert. Click any history item to copy it to clipboard.
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
Chrome 138 or higher · No flags required · No API keys
Add Prompt Enhancer from the Chrome Web Store. Chrome 138 or higher required.
On first launch, the extension checks for Gemini Nano. If it isn't downloaded yet, Chrome handles it in the background (~1.5 GB, one-time). The welcome page shows real-time status so you know exactly what's happening.
Open ChatGPT, Google Gemini, Claude, or Perplexity, type your prompt, and click the enhance icon near the text box or press Ctrl+Shift+E.
Medium · Pranava Kailash
A deep dive into building a Chrome extension that runs 100% on-device using Chrome's built-in Gemini Nano via the Prompt API. No API keys, no servers, no privacy trade-offs.
Read on MediumFree, 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