Prompt Enhancer

Enhance and craft AI prompts with Gemini Nano — chat, edit, and copy on ChatGPT, Gemini, Claude, and Perplexity

Transform any prompt into a better one — on your device, instantly Most people type a rough idea and hit send. Prompt Enhancer rewrites it first, using Chrome's built-in Gemini Nano. Everything runs on your machine. Nothing leaves it. KEY FEATURES ★ Instant enhance Press Ctrl+Shift+E or click the floating button next to your text box. The rewritten prompt streams in real time, token by token. ★ Add Context mode Press Ctrl+Shift+D to start a short conversation instead. The AI asks what it needs to know, then writes a prompt based on what you actually told it. Each tab keeps its own session, so multiple conversations don't bleed into each other. ★ Native editor insert One click pushes the result straight into the platform's input field — no copy-pasting. Works with ChatGPT, Gemini, Claude, and Perplexity, and auto-activates the send button too. ★ Regenerate Not quite right? Hit Regenerate. In Context Mode, the conversation carries over, so each attempt builds on the last. ★ Fully offline, fully private Everything runs on your device. Your prompts don't go anywhere. No account, no subscription, no cloud. ★ Prompt history The last 20 enhanced prompts live in the popup. Click any to copy. Nothing gets saved unless you choose to Copy or Insert. ★ Dark and light themes Toggle from the popup. Applies everywhere instantly. SUPPORTED PLATFORMS ChatGPT (chatgpt.com, chat.openai.com) Google Gemini (gemini.google.com) Claude (claude.ai) Perplexity AI (perplexity.ai) HOW TO USE INSTANT ENHANCE: Open a supported platform and write your prompt Click the floating button or press Ctrl+Shift+E Review the result, then Insert or Copy ADD CONTEXT MODE: Press Ctrl+Shift+D (or click the button and choose Add Context) Answer the questions in the overlay Get a prompt built around your specific situation REQUIREMENTS Chrome 138 or later. About 2 GB free storage for the AI model (one-time download, stays on your device) SETUP Install the extension and open any supported platform. A welcome page walks you through the one-time model download. Takes a few minutes — after that, nothing else to configure. KEYBOARD SHORTCUTS Ctrl+Shift+E — instant enhance Ctrl+Shift+D — Add Context mode PRIVACY All processing happens on your device via Chrome's built-in Gemini Nano. Nothing is sent to external servers. No account required. Prompts are only saved locally when you Copy or Insert them.