Nano Banana Pro Complete Guide (Part 1): Golden Rules & Core Features - Official Google Tutorial

Nano Banana Pro (officially known as Gemini 2.5 Flash Image) represents a revolutionary leap in AI image generation. Unlike previous models focused on "fun" creative outputs, Nano Banana Pro is engineered for professional asset production—delivering exceptional results in text rendering, character consistency, visual synthesis, real-time knowledge integration, and stunning 4K resolution outputs.

This two-part guide, adapted from Google's official developer documentation, will transform how you approach AI image generation. Whether you're a content creator, designer, or marketer, these techniques will help you unlock the full potential of this powerful AI image generator.

Ready to try these techniques? Head to Aimage AI to experiment with Nano Banana Pro alongside other leading models like FLUX Kontext.

What You'll Learn in Part 1

• Section 0: The Golden Rules of Prompting
• Section 1: Text Rendering, Infographics & Visual Synthesis
• Section 2: Character Consistency & Viral Thumbnails
• Section 3: Grounding with Google Search

Part 2 covers advanced editing, dimensional translation, high-resolution output, thinking mode, storyboarding, and structural control.

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Section 0: The Golden Rules of Prompting

Here's the fundamental truth about Nano Banana Pro: it's a "Thinking" model. This AI image generator doesn't simply match keywords—it comprehends intent, understands physics, and reasons about composition.

To harness its full capabilities, abandon the old "tag soup" approach (e.g., dog, park, 4k, realistic) and start communicating like a Creative Director.

Rule 1: Edit, Don't Regenerate

The model demonstrates remarkable proficiency in understanding conversational edits. When your generated image is 80% correct, resist the urge to start over. Instead, request the specific modification you need.

Example prompt: "That looks great, but adjust the lighting to golden hour sunset and make the headline text neon blue."

This iterative approach saves time and credits while producing more refined results.

Rule 2: Communicate in Natural Language

Engage with Nano Banana Pro as you would brief a professional artist. Use complete sentences, proper grammar, and vivid descriptive language.

❌ Ineffective: "Cool car, neon, city, night, 8k."

✅ Effective: "A cinematic wide-angle shot of a sleek futuristic sports car racing through rain-slicked Tokyo streets at midnight. Vibrant neon signage reflects off the wet asphalt and the car's polished metallic body."

Rule 3: Embrace Specificity and Detail

Vague instructions produce generic results. Define every crucial element: subject, environment, lighting, and emotional tone.

Subject specificity: Rather than "a woman," specify "an elegant elderly woman wearing a vintage Chanel-inspired tweed suit with pearl accessories."

Material descriptions: Articulate textures clearly—"matte ceramic finish," "brushed aluminum," "crushed velvet," "weathered parchment paper."

Rule 4: Provide Context and Purpose

Because this AI image generator reasons about your requests, providing context enables smarter creative decisions.

Example: "Create an appetizing photograph of an artisan sandwich for a premium Brazilian gourmet cookbook."

The model will automatically infer professional food styling, shallow depth of field, and studio-quality lighting appropriate for high-end culinary publishing.

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Section 1: Text Rendering, Infographics & Visual Synthesis

Nano Banana Pro delivers state-of-the-art capabilities for generating legible, stylized text and transforming complex information into compelling visual formats. This makes it an exceptional AI image generator for marketing materials, educational content, and data visualization.

Best Practices for Text and Infographics

Information Compression: Instruct the model to "compress" or "synthesize" dense documents or data into visual summaries.

Style Direction: Specify your desired aesthetic—"polished editorial magazine layout," "technical engineering diagram," "casual hand-drawn whiteboard sketch."

Text Specification: Always enclose exact text in quotation marks for accurate rendering.

Example Prompts

Financial Report Visualization: "Generate a clean, contemporary infographic summarizing the key financial highlights from this quarterly earnings report. Include data visualizations for 'Revenue Growth' and 'Net Income', and feature the CEO's key statement in an elegant pull-quote design element."

Retro-Style Infographic: "Design a nostalgic 1950s-era infographic exploring the history of the American diner. Create distinct visual sections for 'Classic Comfort Food,' 'The Jukebox Era,' and 'Iconic Decor.' Ensure all typography is clearly legible and authentically styled to the period."

Technical Blueprint: "Create an orthographic architectural blueprint showing this building in plan view, elevation, and cross-section. Label the 'North Elevation' and 'Main Entrance' using precise technical architectural typography. Format: 16:9 aspect ratio."

Educational Whiteboard: "Illustrate the concept of 'Transformer Neural Network Architecture' as a hand-sketched whiteboard diagram suitable for a graduate-level lecture. Use distinct colored markers for Encoder and Decoder components, with clear labels for 'Self-Attention Mechanism' and 'Feed Forward Network'."

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Section 2: Character Consistency & Viral Thumbnails

One of Nano Banana Pro's most powerful features is support for up to 14 reference images (with 6 maintaining high fidelity). This enables "Identity Locking"—placing specific individuals or characters into entirely new scenarios while preserving facial accuracy.

This capability makes it an ideal AI image generator for content creators, YouTubers, and brand marketers who need consistent character representation across multiple assets.

Best Practices for Character Consistency

Identity Preservation: Explicitly state: "Maintain the person's facial features exactly as shown in Image 1."

Expression Variation: Describe emotional or postural changes while emphasizing identity consistency.

Composite Thumbnails: Combine subjects with bold graphics and text in a single generation pass for maximum efficiency.

Example Prompts

Viral Video Thumbnail (Identity + Text + Graphics):

"Design an attention-grabbing video thumbnail using the person from Image 1.

Face Consistency: Preserve the person's facial features exactly as Image 1, but change their expression to excited and surprised.

Pose: Position the person on the left side, pointing enthusiastically toward the right side of the frame.

Subject: On the right side, place a beautifully styled image of gourmet avocado toast.

Graphics: Add a bold yellow arrow connecting the person's pointing finger to the toast.

Text: Overlay large, pop-style text in the center: 'Done in 3 Minutes!' Use thick white outline with drop shadow.

Background: Softly blurred, bright kitchen setting. High saturation and contrast."

Multi-Character Story Series (Group Consistency):

"Create an entertaining 10-part visual story featuring these 3 plush characters on a tropical vacation adventure. The narrative should include exciting moments, emotional highs and lows, culminating in a heartwarming finale. Maintain consistent appearance and attire for all 3 characters throughout, while varying their expressions, poses, and camera angles across all 10 images. Ensure only one instance of each character appears per image."

Brand Asset Generation:

"Produce 9 stunning fashion photographs suitable for an award-winning editorial spread. Use this reference as the brand style foundation, but introduce nuance and variety across the collection to convey sophisticated design sensibility. Generate images one at a time."

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Section 3: Grounding with Google Search

Nano Banana Pro integrates with Google Search to generate imagery informed by real-time data, current events, and factual verification. This dramatically reduces hallucinations and ensures accuracy for time-sensitive topics.

This unique capability sets it apart from other AI image generators by enabling visualizations grounded in actual, current information.

Best Practices for Search-Grounded Generation

• Request visualizations of dynamic, real-world data (weather patterns, market trends, breaking news)
• The model will "Think" (reason) about search results before generating the final image
• Particularly effective for infographics, event visualizations, and educational content

Example Prompts

Travel Planning Visualization: "Generate an informative infographic showing the optimal times to visit major U.S. National Parks in 2025, based on current travel trends and seasonal considerations."

Current Events Infographic: "Create a visual summary of this week's major technology announcements, including key product launches and industry developments."

Data-Driven Visualization: "Design an infographic comparing current renewable energy adoption rates across G20 nations, with projections for 2030."

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Try Nano Banana Pro Today

Ready to put these techniques into practice? Aimage AI provides instant access to Nano Banana Pro alongside other powerful models like FLUX Kontext and GPT-4o.

With Aimage's unified interface, you can:

• Compare results between different AI image generators using identical prompts
• Iterate quickly with conversational editing
• Access your generation history for easy reference and refinement

Start creating with Nano Banana Pro →

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Continue to Part 2

In Part 2 of this guide, we cover:

• Advanced Editing, Restoration & Colorization
• Dimensional Translation (2D ↔ 3D)
• High-Resolution & Texture Generation
• Thinking & Reasoning Mode
• One-Shot Storyboarding & Concept Art
• Structural Control & Layout Guidance

Read Part 2: Advanced Techniques →

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This guide is adapted from Google's official Nano Banana Pro developer documentation. For the complete technical reference, visit the official Google AI documentation.