Nano Banana Prompt Guide: How to Write Better Prompts for Gemini Flash 2.5 Image
Master the art of writing effective prompts to get the best results from Nano Banana AI
If you've heard about Nano Banana, also known as Google's Gemini Flash 2.5 Image model, you already know it has become one of the most talked-about AI tools for image generation and editing. What makes it stand out is its ability to keep faces, objects, and styles consistent across multiple edits, which is something many other models struggle with.
Basic Principles
The key to writing good prompts for Nano Banana is to keep things natural and clear. You don't need complicated syntax or technical codes. Think of it as texting a friend—just describe what you want in plain language, and the model will understand.
Vague Prompt
Just writing single words:
"beach"Clear Prompt
Describe what you want specifically:
"Keep the same person, change the background to a beach at sunset with warm lighting."Common Use Cases
Background Change
When changing photo backgrounds, be specific about the setting and lighting:
"Keep the same person, change the background to a beach at sunset with warm lighting."E-commerce Product Photos
For product photography, specify multiple lifestyle contexts:
"The same woman holding a red lipstick; brand label clear. Scene: bathroom counter, soft daylight, shallow depth of field. "Storyboard Creation
For storyboard creators, describe the same character across different scenes:
"The same teenage skater, at a subway platform with moody lighting."Lighting Control
Be specific about lighting instead of using vague terms:
"Soft cinematic lighting with a rim light from the left, exposure slightly lower for a dramatic mood."Style Transfer
For style changes, specify what to preserve:
"Apply watercolor illustration style to this photo, keep the same face and outfit details."Golden Rules
One Request at a Time
If you want multiple changes, break them into steps—first change the background, then adjust the lighting, then apply a style. This way the results stay consistent.
Keep it Simple
Use natural, conversational language
Be Concrete
Specific descriptions work better than vague terms
Stay Consistent
Maintain the same elements across edits
Key Takeaway
At the end of the day, the best prompts are those that are simple, concrete, and consistent. The clearer your description, the more accurate Nano Banana will be.
Ready to Start Creating?
Put these tips into practice and start creating amazing images with Nano Banana AI.
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