Nano Banana Cheat Sheet: Best Prompts for AI Images

Nano Banana (Google’s Gemini 2.5 Flash Image) is a revolutionary AI image generator that understands natural language and honestly? It’s the best AI image generator I have EVER used! I will show you some of my own images I created with it.

Forget complex tools, just tell it what you want to see. This cheat sheet gives you the best prompts to create stunning, high-quality images, from photorealistic scenes to perfect anime characters.

If you have a great prompt idea or want to share your creations, contact us here or leave a comment below.

The Universal Prompt Formula

Use this structure for consistent, high-quality results every time.

Component	Example
Action	“Create”, “Generate”, “Design”
Main Subject	“a futuristic smartphone”, “a wizard cat”
Detailed Description	“with a holographic display, matte black finish”
Context/Environment	“on a minimalist desk in a neon-lit cyberpunk room”
Style/Aesthetic	“photorealistic, studio lighting, 4K resolution”
Technical Specs	“wide-angle lens, bokeh effect, ultra-detailed”

Photorealistic Images

Prompts to generate images that are indistinguishable from photographs.

Task	Nano Banana Prompt
Hyper-Realistic Portrait	“A photorealistic close-up portrait of an elderly woman with wise eyes and deep wrinkles, smiling softly, in a sunlit garden. Shot on a Canon EOS R5, 85mm lens, shallow depth of field, incredibly detailed skin texture.”
Product Photography	“A professional product photo of a minimalist white coffee mug on a rustic wooden table, morning light streaming through a window, with soft shadows and a blurred background (bokeh).”
Landscape Scene	“A breathtaking photorealistic landscape of a misty mountain range at sunrise, captured with a telephone lens, golden hour lighting, volumetric mist, ultra-high detail.”
Urban Architecture	“A realistic photo of modern glass skyscraper architecture reflecting a sunset sky, wide-angle lens, sharp focus, cinematic lighting.”
Food Photography	“A delicious, photorealistic image of a slice of chocolate cake with a glossy glaze and fresh berries on a marble countertop, overhead shot, moody lighting.”

Anime & Cartoon Styles

Create characters and scenes in various animated art styles.

Task	Nano Banana Prompt
Studio Ghibli Style	“An anime girl with short blue hair and a red bow, wearing a school uniform, sitting on a flying bus, in the style of Studio Ghibli, lush backgrounds, soft watercolor textures, whimsical and heartwarming.”
Shonen Anime Hero	“A dynamic action shot of a shonen anime hero with spiky yellow hair, powering up with electric energy, determined expression, cel-shaded, vibrant colors, speed lines.”
Cyberpunk Anime	“A character in a neon-soaked cyberpunk anime city, wearing a high-tech jacket and glowing implants, in the rain, reflecting lights, dark and vibrant style.”
Vintage Cartoon	“A funny cartoon black and white rubberhose character from the 1920s, playing a saxophone, exaggerated movements, film grain effect.”
Modern Illustration	“A cute cartoon owl wearing a tiny backpack, in a flat illustration style, pastel colors, clean lines, sticker design.”

Artistic & Painting Styles

Generate images in the style of famous artists or art movements.

Task	Nano Banana Prompt
Oil Painting Portrait	“A portrait of a nobleman in the style of Rembrandt, oil painting, dramatic chiaroscuro lighting, rich textures, thick impasto brushstrokes, dark background.”
Impressionism	“A landscape of a water lily pond in the style of Claude Monet, impressionistic, visible brush strokes, study of light and reflection, soft focus.”
Starry Night Style	“A small town under a swirling, dramatic night sky with stars and galaxies, in the distinct style of Vincent van Gogh’s Starry Night.”
Pop Art	“A pop art portrait of a woman, in the style of Andy Warhol, bright contrasting colors, halftone dots, high contrast.”
Digital Painting	“A fantasy digital painting of a mystical forest with glowing mushrooms and bioluminescent plants, concept art, epic lighting, highly detailed.”

Advanced Editing & Effects

Go beyond generation and use Nano Banana’s powerful editing capabilities.

Task	Nano Banana Prompt
Change Background	“Take this person and place them on the surface of Mars, with a spacesuit on, looking at Earth in the sky. Keep the person’s face and identity exactly the same.”
Swap Outfits	“Change this person’s casual t-shirt into a formal black tuxedo. Keep the same pose and background.”
Create a 3D Figurine	“Transform this photo of my dog into a 3D cartoon figurine, Pixar style, sitting on a pedestal.”
Apply a Style	“Take the pattern and colors from this image of a galaxy and apply it to this jacket.”
Fix/Enhance a Photo	“Make this old, faded photo look new. Increase the resolution, colorize it, and remove the scratches.”

Concept Art & Design

Ideal for world-building, game design, and conceptual ideas.

Task	Nano Banana Prompt
Fantasy Creature	“Concept art of a ‘Forest Guardian’ creature, a hybrid of a deer and a wolf with antlers made of glowing crystal, mossy fur, serene expression.”
Futuristic Vehicle	“Design a sleek, solar-powered flying car for a cyberpunk city, with neon underglow, retractable wings, and matte black finish.”
Architectural Concept	“A concept drawing for a sustainable treehouse hotel nestled in a redwood forest, with suspended bridges and glass pods, eco-friendly design.”
UI/UX Interface	“A futuristic holographic user interface for a spaceship control panel, glowing blue elements, transparent layers, sleek and modern.”
Logo Idea	“A logo concept for ‘Nova Coffee’ featuring a stylized rocket ship taking off from a coffee ring, minimalist flat design.”

Example of Nano Banana Images

Check out this logo Gemini Nano Banana came up with, nice right? What did I prompt it? All I typed was “Create a logo/sticker that represents ChromeGeek.com, include a mascot/anime girl to represent the site.”

Pro Tips & Tricks

• Be Specific: Details matter. Specify lighting, camera angles, art style, and mood.
• Reference Artists: Use “in the style of [Artist Name]” for consistent results.
• Iterate: Use the output as a new input and ask for refinements. “Now make the lighting more dramatic.”
• Combine Concepts: Nano Banana is great at fusion. “A castle made of clouds” or “a robot made of vintage clock parts.”
• Use for Inspiration: Generate multiple concepts quickly to beat creative block.

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More AI Prompt Cheat Sheets

• Gemini Prompts for Students
• Gemini Prompts for Teachers & Professors
• Gemini Prompts for Web Developers
• Gemini Prompts for Social Media Marketers
• Gemini Prompts for Content Creators & Bloggers

Each guide includes practical prompts and downloadable cheat sheets.

Bonus Tip: For the best experience generating and editing these images, check out our guide on the Best Chromebooks for Students.