Gemini 2.5 Flash Image Overview (Beta)
The Google Gemini 2.5 Flash Image (aka Nano Banana) Configuration uses Google’s powerful image generation API to modify photos using simple text prompts. Survey data can also be used within the prompt to dynamically control the prompt itself, along with a reference image that can influence the final output.
In this Guide
Examples
Google Gemini Settings
Prompt
The Prompt is the text you enter to describe the image or image modification you want to create. The Image Prompt can contain Survey Tokens to create dynamic prompts based on data collected at the Photo Booth.
For example, to turn the image in to a Claymation style image, you could try the prompt:
Redo this image in the Claymation style, handmade clay textures, visible fingerprints and smudges, slightly uneven proportions, stop-motion aesthetic, soft lighting, expressive sculpted faces
Dimensions
Unlike the GPT Image configuration, you can not control the size or ratio of the output. Google Gemini will return the image in the same ratio that the uploaded image was captured in, at a max width/height of approximately 1200px.
Second Image
The Second Image is an optional image that can be uploaded to be used as a reference. This is useful for when you are trying to merge two images together. You could say something like:
make image 1 look like it’s holding the drink in image 2
Source Image
The Source Image is for uploading your own test image. Once you have uploaded the image, press the Test button.
Other Settings
Additional processing can be run on the uploaded or processed image. See below to learn more about each option.
- remove,bg Apply background removal to uploaded or processed images.
- NSFW Scan the uploaded or processed image for inappropriate content.
Using Survey Data
The Image Prompt can include Survey Data collected at the photo booth. This allows you to create dynamic prompts where the output can be fine tuned to the user.
Example
A Sports Trading Card Photo Booth, where you have two survey questions:
- Pick your Team Color {survey1, radio, color}
- Enter your Shirt Number: {survey1_text_shirtNumber}
Prompt
the person in the photo is a professional basketball player.
The color and style of the uniform is mainly {survey1_radio_color} with white features.
The number {survey1_text_shirtNumber} is on the shirt.