Nanobanana Guide: How to Write Better Prompts (2026)

Nano Banana is fast and works best for quick edits. It’s Google Gemini image generator, known for speed in simple tasks. The Pro version handles complex scenes and high‑detail images. Use the first model for short prompts. Use the Pro version when you need structure and depth.

This guide is based on real tests from our own nanobanana image editor. You will learn what works, what fails, and how to get the best results with simple prompts.

Key points:

• Base model – quick changes and simple tasks
• Pro version – complex logic and detailed visuals
• Each model needs a different prompting style

Below you will find clear workflows, simple tips, and real examples to help you use theses models with confidence.

How Google Nanobanana Works (Simple Explanation)

According to Google’s Gemini documentation, the base model uses pattern matching. It looks for familiar shapes and styles and builds a picture from them. This makes it fast for small edits and short prompts.

Nano Banana Pro uses a reasoning engine. It analyzes the scene, the objects, and their relationships. It can follow longer instructions and create more structured images.

The first model works only with its training data. The Pro version can also use live web data, which helps it generate more accurate and up‑to‑date visuals. This section also serves as a simple nano banana prompting guide, so you can understand how each model reacts to different types of prompts.

Nano Banana vs Nano Banana Pro

Here’s a quick side-by-side comparison of the two models to help you decide which one fits your needs:

Core Principles of Writing Prompts

Good prompts for Nano Banana are simple and direct. The nanobanana model works best when you give it one clear idea at a time. This is the core of how to write prompts for nano banana, because short, focused instructions produce the best results.

Core rules:

• Use short sentences
• Start with the main subject
• Add style or mood after the subject
• Keep visual terms simple
• Avoid conflicting instructions

These basics show you how to prompt Nano Banana effectively in any style.

Structure of the Ideal Nanobanana Prompt

The best prompts for Nano Banana follow a simple structure. This structure helps the model understand the subject, the style, and the visual intent.

Ideal prompt structure:

1. Subject: the main object or character
2. Style: realism, anime, fantasy, product photo
3. Visual details: illumination, colors, angle, mood
4. Extra attributes (optional): background or small details
5. Intent (optional): high detail, clean background, studio look

Quick template:

[subject] + [style] + [visual details] + [extra attributes] + [intent]

Example:

a young woman, anime style, soft glow, warm colors, close‑up, clean background

Ready‑to‑Use Nano Banana Prompts Examples

These examples show how simple prompts work for the base version and how advanced text instructions unlock the Pro version. Use them as templates for your own images.

Portraits – Base nanobanana model (simple examples)

• a young woman, soft warm glow, warm colors, close‑up
• a young woman, gentle illumination, warm colors, close‑up
• a smiling girl, bright colors, soft shadows

Portraits – Pro version (advanced examples)

• a young woman in a red jacket, realism, shallow depth, neon reflections, night city street
• a man with glasses, detailed skin texture, studio illumination, cinematic mood
• a woman with curly hair, warm tones, subtle rim glow, indoor café scene

Anime – Simple instructions for the base nanobanana model

1. anime girl, bright colors, soft glow, close‑up
2. anime boy with blue hair, warm tones, simple background
3. chibi character, pastel colors, cute expression

Anime – Advanced prompts for the Pro version

1. anime warrior, dramatic lighting, detailed armor, glowing sword, battlefield at sunset
2. anime girl in a school uniform, soft glow, cherry blossoms, windy day
3. anime mage, blue magic effects, night forest, floating particles

Realism – Basic commands for the fast model

• a cup of coffee, diffused ambience, wooden table
• a red apple, clean background, natural illumination
• a small plant, bright colors, simple shadows

Realism – Detailed inputs for the Pro version

• a realistic cat, soft fur texture, warm ambience, shallow depth, cozy living room
• a modern living room, natural illumination, wide shot, minimal design, detailed materials
• a mountain landscape, sunrise glow, high detail, morning mist

Fantasy – Simple instructions for the base nanobanana model

1. a small dragon, bright colors, simple background
2. a magic sword, glowing aura, dark background
3. a fairy, diffused illumination, pastel colors

Fantasy – Advanced descriptions for the Pro version (complex)

1. a fantasy castle, dramatic sky, detailed stone texture, flying creatures
2. a fire mage casting a spell, glowing particles, dark forest, cinematic contrast
3. a knight in armor, foggy battlefield, cold ambience, broken weapons on the ground

Products – Simple examples for the base nanobanana model

• a perfume bottle, studio illumination, clean background
• a smartwatch, soft shadows, white background
• a sneaker, bright ambience, simple setup

Products – Nanobanana Pro Product Examples

• a luxury watch, macro shot, reflective metal, detailed textures
• a skincare bottle, studio illumination, water splash effect, glossy surface
• a laptop on a desk, natural illumination, minimal interior, soft reflections

Objects – Nanobanana Object Prompts

1. a wooden chair, soft gentle glow, clean background
2. a ceramic mug, warm tones, simple shadows
3. a wooden chair, subtle ambience, clean background

Objects – Nano Banana Pro Object Prompts

1. a glass vase with flowers, soft reflections, detailed petals, window light
2. a metal key, macro shot, textured surface, dramatic shadows
3. a book on a table, warm glow, shallow depth, cozy interior

Scenes – Simple Nano Banana Scene Prompts

• a beach at sunset, warm colors, simple shapes
• a forest path, soft illumination, green tones
• a small street, bright colors, clean lines

Scenes – Advanced Nanobanana Pro Scene Prompts

• a cyberpunk city at night, neon lights, wet pavement reflections, wide shot
• a medieval village, warm light, detailed textures, people walking
• a modern kitchen, natural light, clean design, wide angle, reflective surfaces

Advanced Techniques

These techniques give you more control over Nano Banana and Nanobanana Pro.
They help you shape style, lighting, and composition with precision.

Multi‑Prompt (split ideas clearly)

Multi‑prompt means breaking your idea into short parts.
It helps the nanobanana model understand structure.

Format:

subject | style | lighting | background | mood

Example:

young woman | anime style | warm soft glow| clean background | calm mood

Use it when the model mixes details or adds unwanted elements.

Negative Prompts (remove unwanted details)

Negative prompts tell the model what to avoid.
They clean the image and reduce artifacts.

Use the format:

negative: [things you want to remove]

This format works for both Nanobanana and Nano Banana Pro.

Useful negatives:

blurry details, extra fingers, distorted face, harsh shadows, unwanted objects

Nanobanana reacts softly.
Nano Banana Pro follows negatives very accurately.

Short example of a prompt:

a young woman, soft warm illumination, close‑up
negative: blurry, distorted face, hat

Style Mixing (combine two styles)

You can blend styles to create unique looks.

Format:

subject, style A + style B, lighting, details

Nano Banana Examples (text instructions):

1. realistic portrait + anime colors
2. fantasy armor + modern fashion photo
3. product photo + cinematic mood

Pro handles mixed styles better.

Lighting Control (shape the mood)

Lighting changes the entire atmosphere.
It is one of the strongest tools in ai image prompts.

Common lighting types:
soft diffusion, hard contrast, rim highlight, backlit effect, neon accents, warm tones, cool tones

Example:

realistic portrait, soft warm light, rim light on hair

Nano Banana prefers simple lighting.
Pro can handle multiple lighting instructions at once.

Composition Control (guide the frame)

Composition defines the camera angle and layout.

Useful terms:
close‑up, medium shot, wide shot, top‑down, centered, rule of thirds, dynamic angle

Example:

fantasy knight, cinematic style, wide shot, rule of thirds

Pro understands composition instructions more reliably.

Face Swap Guide

A good nano banana face swap prompt is short and clear. Face swap works best when the prompt describes the scene, and the face comes from your uploaded image. Nano Banana and Nanobanana Pro both support face swaps, but Pro gives more accurate details.

How to write a face swap prompt

Face swap does not replace a face inside an existing picture.
The model creates a new scene from your prompt and inserts the face from your uploaded photo into that scene.

Keep the structure short.
Describe the scene, not the portrait.
The model will take the portrait from your uploaded photo.

Basic format:

[scene or style], [lighting], [camera angle]

Add this line:

use face from uploaded photo

This tells the model to replace the portrait without changing the rest.

Example:

cinematic portrait, soft warm light, close‑up
use face from uploaded picture

Common mistakes to avoid on face‑swapping

1. Describing the face

Do not write hair color, eye color, or facial features.
It can override the reference.

2. Too many style modifiers

Heavy styling can distort the swapped face.
Keep the style simple.

3. Low‑quality reference images

Blurry or dark photos reduce accuracy.
Use a clear, front‑facing photo.

4. Multiple faces

Upload only one face per generation.
Multiple faces confuse the model.

5. Negative prompts on the portrait

Avoid negatives like:

negative: distorted face

They can break the swap.

Multi‑Image Editing

Multi‑photo workflows are one of the strongest features of nano banana image editing. Nano Banana and Nano Banana Pro can combine elements from several uploaded pictures, letting you merge faces, outfits, light or styles into one final result.

How multi‑photo editing works

The nanobanana model reads each uploaded source separately.
You can tell it which part comes from which file.
Keep the prompt simple and focus on the final result.

Using face from one image and outfit from another

This is the most common multi‑asset workflow.

Upload:

• Photo 1 for the face you want
• Photo 2 for the outfit or body you want

Then tell the model which part to use from each source.

Example:

use face from source 1
use outfit from source 2
studio portrait, soft warm light, medium shot

Using one image as a lighting reference

Upload:

1. File 1 for main subject
2. File 2 for lighting reference

Example:

use face from photo 1
match lighting from photo 2
cinematic portrait, warm tones

This transfers the lighting mood from file 2 to the subject from file 1.

Using one image as a style reference

Upload:

• Source 1 => main subject
• Source 2 => style reference

Example:

use face from photo 1
apply style from photo 2
clean background, soft light

This is useful for matching branding, moodboards, or visual themes.

Combining multiple references

You can mix more than two photos, but keep the nanobanana prompts simple.

Example:

use face from image 1
use outfit from image 2
match lighting from image 3
studio portrait, medium shot

Nanoanana Pro handles multi‑reference prompts more reliably.

Troubleshooting

If nano banana not working or giving unexpected results, the issue usually comes from the prompt, the images, or conflicting instructions.

Sometimes the model also fails because the server receives too many requests at once, and the operation is interrupted. In this case, wait a few seconds and try again.

Common causes & quick fixes

FAQ

In this final section, we want to answer the most common questions users have about Nano Banana and Nano Banana Pro. This FAQ will continue to grow. I will update it based on comments and feedback under this post.