Nano Banana Script Guide: Automate AI Image Generation 2025
Master nano banana script automation with Python! Complete guide to Gemini 2.5 Flash Image API for batch processing and scalable AI image generation.
🚀 Ready for Automation? While you're learning about scripting, try Nano Banana directly in your browser - no code required! Perfect for testing ideas before automating them.
If you're in the creative or development space, you've likely heard the buzz around Nano Banana, Google's game-changing image model officially known as Gemini 2.5 Flash Image. While its web interface is incredibly powerful for one-off edits, the real revolution for developers and power users lies in automation through a Nano Banana script.
This guide will walk you through exactly what that means, why it's a transformative approach to content creation, and how you can get started with your own scripts to generate and edit images at scale.
Why Use a Script for Nano Banana?
Using a web UI is intuitive, but it has limitations. Scripting unlocks the next level of efficiency and integration. Here's why you should consider it:
Batch Processing: Scale Your Creative Work
Imagine needing 50 variations of a single product image for an ad campaign, each with a different background or color scheme. Manually, this is hours of tedious work. Try this concept with our web interface first to see the possibilities! A script can automate this entire process, generating hundreds of unique assets from a single source image and a list of text prompts.
Application Integration: Build Custom Solutions
A Nano Banana script allows you to build its powerful editing capabilities directly into your own applications. Think of an e-commerce site that generates on-demand product mockups or a social media tool that creates custom thumbnails automatically.
Custom Workflows: Unlimited Automation
Scripting gives you the freedom to create complex, multi-step workflows. You could write a script that generates an image with Nano Banana, passes it to another AI for upscaling, and then uploads it directly to your cloud storage—all without manual intervention.
💡 Want to experience these benefits without coding? Our platform handles automation for you - perfect for teams who need scale without development overhead.
Getting Started: The Nano Banana API and Python
The most direct way to script Nano Banana is through the Gemini API using Python. It's more straightforward than it sounds. Here's a high-level overview of the process.
1. Prerequisites and Setup
Before you start, you'll need a few things:
An API Key: You can get a free API key from Google AI Studio. This key authenticates your script's requests.
Python Environment: Ensure you have a recent version of Python installed.
Google AI Library: You'll need to install Google's official Python library. You can do this with a simple terminal command: pip install google-generativeai.
2. Basic Python Script for Text-to-Image
Once you're set up, generating an image from text is simple. This script takes a text description and saves the generated image as a PNG file.
from google import genai
from PIL import Image
from io import BytesIO
import os
# Best practice: store your API key in an environment variable
# client = genai.Client(api_key=os.getenv("GEMINI_API_KEY"))
client = genai.Client() # The client can also find the key automatically
prompt = "A photorealistic image of a sleek, futuristic electric car driving on a coastal highway at sunset."
response = client.generate_content(
model="gemini-2.5-flash-image-preview",
contents=[prompt],
)
# Process and save the image
for part in response.candidates[0].content.parts:
if part.inline_data:
image = Image.open(BytesIO(part.inline_data.data))
image.save("futuristic_car.png")
print("Image saved as futuristic_car.png")
(Code adapted from official Google documentation)
3. Advanced Script: Editing an Existing Image
Nano Banana's real strength is editing. The script for this is very similar, but you provide an image file along with your prompt.
from google import genai
from PIL import Image
from io import BytesIO
import os
client = genai.Client()
# Load your local image
image_path = "/path/to/your/image.png" # Change this to your image file
image = Image.open(image_path)
prompt = "Change the color of the car in the image to a vibrant metallic red, keeping the background and lighting the same."
# Pass both the prompt and the image to the model
response = client.generate_content(
model="gemini-2.5-flash-image-preview",
contents=[prompt, image],
)
# Process and save the new image
for part in response.candidates[0].content.parts:
if part.inline_data:
edited_image = Image.open(BytesIO(part.inline_data.data))
edited_image.save("edited_car.png")
print("Edited image saved as edited_car.png")
(Code adapted from official Google documentation)
The Simpler Path to Automation
While scripting offers unparalleled control, it requires a development setup and coding knowledge. For marketers, designers, and creators who need the power of batch processing without the code, there's a more direct solution.
Our Flash Image platform provides an intuitive, web-based interface built on Nano Banana's powerful engine. You can achieve complex, multi-image workflows and generate creative variations at scale, all through a user-friendly interface. It's the perfect way to harness the power of automation without ever opening a terminal.
Professional Workflows Made Simple
For teams ready to scale their creative operations, our platform offers:
- Batch Processing: Upload multiple images and apply consistent edits across all
- Template Systems: Save your best prompts and reuse them instantly
- Team Collaboration: Share workflows and results with your entire creative team
- Priority Processing: Get faster results when you're working under tight deadlines
Advanced Scripting Techniques
Loop Through Multiple Images
import os
from pathlib import Path
# Process all images in a folder
image_folder = Path("/path/to/your/images/")
output_folder = Path("/path/to/output/")
for image_file in image_folder.glob("*.png"):
image = Image.open(image_file)
# Apply your edit
response = client.generate_content(
model="gemini-2.5-flash-image-preview",
contents=["Make this image have a vintage film look", image],
)
# Save with modified name
for part in response.candidates[0].content.parts:
if part.inline_data:
result = Image.open(BytesIO(part.inline_data.data))
result.save(output_folder / f"vintage_{image_file.name}")
Error Handling and Retry Logic
import time
import random
def generate_with_retry(client, prompt, image=None, max_retries=3):
for attempt in range(max_retries):
try:
contents = [prompt]
if image:
contents.append(image)
response = client.generate_content(
model="gemini-2.5-flash-image-preview",
contents=contents,
)
return response
except Exception as e:
if attempt < max_retries - 1:
wait_time = random.uniform(1, 3)
time.sleep(wait_time)
continue
else:
raise e
Use Cases That Transform Businesses
E-commerce Automation
- Product Variations: Generate the same product in different colors, materials, or settings
- Seasonal Updates: Automatically create holiday-themed versions of your product catalog
- A/B Testing: Create multiple variations of the same product image to test performance
Content Creation at Scale
- Social Media: Generate consistent brand imagery across platforms
- Blog Headers: Create unique visuals for every article automatically
- Marketing Materials: Produce hundreds of ad variants from a single base image
Creative Workflows
- Concept Development: Rapidly iterate on design ideas
- Style Exploration: Test different artistic styles on the same subject
- Client Presentations: Generate multiple options quickly for client review
🎯 Ready to Scale Your Creative Operations? Whether you prefer coding your own solutions or using our no-code platform, the power of automation can transform your creative workflow.
Conclusion
A Nano Banana script is more than just code; it's a gateway to automating high-quality visual content creation. Whether you're a developer building the next great creative app or a marketer looking to streamline your asset pipeline, learning to script with the Gemini API unlocks a world of possibility.
And for those who want the results without the setup, powerful automation tools are ready to help you today.
Ready to Start Automating with Nano Banana?
Experience the power of automated image generation and editing with our user-friendly platform. No coding required - just upload, prompt, and watch the magic happen.
For developers: Use our guide above to build custom solutions with the Gemini API.
For teams: Explore our professional automation features designed for scale and collaboration.