chrome-extension

Real — Chrome Extension

A Manifest V3 browser extension that turns rough ideas into structured, ultra-cinematic Veo 3 prompts from a toolbar popup. It reuses the exact Creative Director system prompt, 12 visual models, and generation controls from the parent veo3_prompt_improver web app.

How it reaches Gemini

The popup builds the same systemPrompt + userContent as the web app, then the background service worker calls Gemini. Two modes (set in the options page):

1. Direct mode — you paste your own Gemini API key (stored in chrome.storage.local, never bundled). The worker calls generativelanguage.googleapis.com directly.
2. Proxy mode — set a backend URL pointing at your deployed server.mjs. The worker POSTs to <url>/api/improve-prompt, so the key stays server-side. Proxy takes priority when both are set. (server.mjs already sends Access-Control-Allow-Origin: *.)

Install (unpacked, for development)

1. Open chrome://extensions.
2. Toggle Developer mode (top right).
3. Click Load unpacked and select this chrome-extension/ folder.
4. Click the extension's icon → the ⚙ button (or right-click → Options) and add your Gemini API key or backend URL, then Save.

Use

1. Click the toolbar icon.
2. Type a rough idea, pick a visual model + dialogue / music / output, optionally add a modifier.
3. Unlock your creative potential → the structured brief appears with a Copy button.

Your last form inputs are remembered between sessions.

Files

• manifest.json — MV3 manifest (popup, options, background worker, Gemini host permission).
• popup.html / popup.css / popup.js — the prompt-builder UI.
• options.html / options.js — API key / model / backend settings.
• background.js — service worker; calls Gemini (with retry + safety handling) or the proxy.
• data.js — shared visual models, controls, few-shot references, and the prompt builder (ported from index.html).
• icons/ — toolbar icons.

Notes

• Direct mode exposes the API key to your own browser only, but anyone with access to your profile could read it from chrome.storage. For a shared/published build, prefer proxy mode.
• This is not packaged for the Chrome Web Store; publishing requires a developer account and a zipped build. Ask if you want a store-ready zip + listing copy.