Google Gemini API Setup Guide (for the AI Presentation Theme Generator)

Step 1: Open the Theme Generator

• Visit the Theme Generator link: aruntastic AI Presentation Theme Generator
• Open it in any modern browser.
• This is where you will generate presentation themes.

Step 2: Open the Settings Panel

• Click the gear icon (top-right corner).
• This opens the API Key settings.

Step 3: When You Click "Generate Themes" Without a Key

• If no API key is saved, you will see a message stating:

"API Key Required — Please add your Google Gemini API key to start generating themes."

• This is normal, proceed to create your own API key.

Step 4: Visit Google AI Studio

• Go to Google AI Studio (https://studio.google.ai).
• Sign in with your Google account.

Step 5: Create Your Free Gemini API Key

• Click Create API Key.
• A popup titled "Create a new key" will appear.

Select or create a project

Now the new project will appear in the dropdown.

Create the API key

• After selecting the project
• Enter a name (e.g., AI Presentation Theme Generator).
• Click Create key.

Your API key is displayed

• Google AI Studio will show the newly generated API key.
• Copy it securely.
• Keys often start with AIzaSy…

Step 7: Add the API Key to the Theme Generator

The key is stored locally in your browser, not sent to any server.

Step 8: Generate Themes

• Go back to the main screen.
• Click Generate Themes again.
• Your custom themes should now be created successfully.

• Free Tier Limits (Gemini 2.5 Flash)
  • 10 requests/minute
  • 250 requests/day
  • 250k tokens/minute
• Limits reset daily at midnight Pacific Time.
• If you need more capacity, you can upgrade in Google Cloud Console.

• If the key does not work, re-paste and save it again.
• Ensure there are no extra spaces before or after the key.
• If the system says quota exceeded, wait for the daily reset.
• If you exposed your key publicly, delete it in Google AI Studio and create a new one.