To generate images, this app needs a Google Gemini API key. The free tier is very generous and perfect for this.
1. Visit Google AI Studio:
Click this link to go directly to the API key page: https://makersuite.google.com/app/apikey
2. Create API Key:
You might need to sign in with your Google account. Click the "Create API key in new project" button.
3. Copy & Paste:
A new key will be generated. Click the copy icon next to it, then come back here and paste it into the input field.
Your key is stored only in your browser and is not sent anywhere except directly to Google's servers for image generation.