nano-banana-prompts

Nano Banana Image Prompt Generator

Generate high-quality prompts for Gemini 2.5 Flash Image using proven best practices from October 2025.

Core Principle

Describe scenes naturally, don't list keywords.

❌ woman, business suit, office, professional ✅ A professional businesswoman in navy suit stands confidently in modern glass-walled office overlooking city skyline. Warm afternoon light streams through windows.

Prompt Structure

Basic Template

A [SHOT TYPE] of [SUBJECT] [ACTION] in [ENVIRONMENT]. 
[LIGHTING] creates [MOOD]. [CAMERA/STYLE DETAILS]. [ASPECT RATIO].

Components

1. Subject & Action - Who/what and what they're doing
2. Setting - Where the scene takes place
3. Lighting - Natural/artificial light sources and quality
4. Mood - Emotional tone or atmosphere
5. Technical Details - Camera, lens, style specifics
6. Format - Aspect ratio or dimensions

Prompt Length

• Short (10-20 words): Quick generation, minimal control
• Medium (50-100 words): ⭐ RECOMMENDED - balanced control
• Long (100-200 words): Maximum control for complex scenes

Photography Prompts

Template

Photorealistic [SHOT TYPE] of [SUBJECT], [ACTION], in [ENVIRONMENT]. 
Illuminated by [LIGHTING], creating [MOOD]. Captured with [CAMERA/LENS], 
emphasizing [DETAILS]. [ASPECT RATIO] format.

Camera Control

Lenses:

• 35mm, 50mm (standard)
• 85mm portrait (close-ups)
• 10-24mm wide (landscapes)
• 60-105mm macro (details)

Lighting:

• Golden hour (warm, soft)
• Blue hour (cool, atmospheric)
• Three-point (studio)
• Dramatic side (high contrast)
• Rembrandt (classic portrait)

Settings:

• Shallow DOF: f/1.4-2.8 (blurred background)
• Deep focus: f/11-22 (everything sharp)
• Motion blur for action

Example

Professional corporate headshot of mid-30s woman with shoulder-length brown hair 
in charcoal blazer. She's smiling warmly at camera against soft gray backdrop. 
Shot with 85mm f/2.0, studio three-point lighting creates gentle shadows defining 
facial features. Ultra-high resolution, LinkedIn-ready quality. 1:1 format.

Art & Illustration Prompts

Template

[STYLE] illustration of [SUBJECT] [ACTION/POSE]. [COMPOSITION] with 
[COLOR PALETTE]. [TECHNIQUE/MEDIUM]. Inspired by [REFERENCE], 
emphasizing [QUALITIES].

Common Styles

• Watercolor painting
• Digital art
• Oil painting
• Pencil sketch
• Ink drawing
• Anime/manga
• Pixel art
• Minimalist vector

Example

Watercolor illustration of young girl reading book under oak tree. Seated 
cross-legged in sun-dappled clearing with wildflowers. Soft, loose brushstrokes 
with pastel color palette of greens, yellows, pinks. Transparent washes create 
dreamy, ethereal quality. Inspired by children's book illustration, emphasizing 
wonder and tranquility. 4:5 portrait format.

Text Rendering

Best Practices:

• Keep under 25 characters total
• Maximum 2-3 phrases
• Specify font style (bold, script, sans-serif)
• Put exact text in quotes
• Describe position explicitly

Example:

Movie poster with bold red text "SUMMER" at top and "Adventure Awaits" 
in white script font at bottom. Ocean sunset background. Cinematic style.

Multi-Turn Editing Workflow

Nano Banana excels at conversational editing. Make one change at a time.

Example sequence:

1. "Create professional headshot of woman in business attire"
2. "Change background to modern office"
3. "Make her wearing glasses"
4. "Add warmer lighting"

Product Photography

Template

High-resolution product photo of [PRODUCT] on [SURFACE]. [LIGHTING] 
to [PURPOSE]. Camera angle: [TYPE] to showcase [FEATURE]. Ultra-realistic, 
sharp focus on [DETAIL]. [ASPECT RATIO].

Example

High-resolution product photo of stainless steel smartwatch on white marble 
surface. Soft diffused studio lighting from 45-degree angle to minimize 
reflections and show screen clearly. Camera angle: slight overhead to showcase 
circular face and metal band texture. Ultra-realistic, sharp focus on watch 
face display. 1:1 format for e-commerce.

Landscape Photography

Template

[TYPE] landscape of [LOCATION] at [TIME]. [WEATHER/ATMOSPHERE]. 
[FOREGROUND ELEMENTS]. Shot with [LENS] from [VANTAGE POINT]. 
[COMPOSITION]. Professional landscape photography with [GRADING]. [MOOD].

Example

Dramatic landscape of mountain lake at golden hour. Wispy clouds catch 
warm orange light over snow-capped peaks. Weathered dock extends into 
mirror-still water as foreground. Shot with 16mm wide-angle from low 
lakeside vantage. Rule-of-thirds composition places horizon in upper third. 
Professional landscape photography with warm color grading. Serene yet majestic.

Abstract Art

Template

[MOVEMENT] abstract exploring [CONCEPT]. [COMPOSITION] with [COLORS/TEXTURES]. 
[MEDIUM] emphasizing [GOALS]. [CONTEXT].

Example

Bold geometric abstract exploring tension and harmony. Overlapping angular 
shapes with vibrant primary colors against deep black. Digital art emphasizing 
sharp edges and color interaction. Large-scale wall art format, 16:9.

Common Pitfalls

Avoid:

• Keyword lists without context
• Vague descriptions
• Conflicting style instructions
• Overly complex text rendering
• Too many simultaneous changes in edits

Instead:

• Use complete sentences
• Be specific about details
• Maintain style consistency
• Keep text simple
• Edit iteratively

Style References

When requesting specific artistic styles, reference:

• Art movements (impressionism, art deco)
• Artists (in style of Van Gogh's brushwork)
• Media (watercolor, oil painting, digital art)
• Eras (1950s photography, modern minimalist)

Aspect Ratios

• 1:1 - Square (social media, profile pics)
• 16:9 - Landscape (presentations, headers)
• 9:16 - Portrait (mobile, stories)
• 4:5 - Portrait (Instagram posts)
• 2:3 - Classic portrait
• 3:2 - Standard photo

Quick Prompt Checklist

✅ Subject clearly described ✅ Action or pose specified ✅ Environment/setting detailed ✅ Lighting source and quality ✅ Mood or atmosphere ✅ Style or technical specs ✅ Aspect ratio chosen ✅ Complete sentences, not keywords

Common Issues & Solutions

Prompt Quality Issues

Issue: Generic or vague output Cause: Prompt too short or lacks specificity Solution: Expand to 50-100 words. Add lighting details, mood, and specific technical specs (lens, style, etc.).

Example:

• ❌ Too vague: "A woman in an office"
• ✅ Specific: "Professional businesswoman in navy suit stands confidently in modern glass-walled office overlooking city skyline at golden hour. Warm afternoon light streams through floor-to-ceiling windows creating soft rim lighting. Shot with 50mm f/2.0, shallow depth of field blurs cityscape background. Confident yet approachable mood. 4:5 portrait format."

Issue: Conflicting style instructions Cause: Mixing incompatible styles (e.g., "photorealistic watercolor") Solution: Choose one primary style. For photography, use camera terminology. For art, use medium/technique terminology.

Issue: Text rendering failures Cause: Too much text, complex fonts, or unclear positioning Solution:

• Limit to under 25 characters total
• Use simple, clear fonts (bold, script, sans-serif)
• Specify exact position ("at top", "centered", "bottom right")
• Put text in quotes: "SUMMER"

Issue: Unwanted elements in image Cause: Ambiguous phrasing or conflicting descriptors Solution: Be explicit about what should NOT appear. Use precise, unambiguous language.

Generation Issues

Issue: Image doesn't match prompt Cause: Prompt too complex or contradictory elements Solution:

1. Simplify prompt to core concept
2. Use multi-turn editing workflow
3. Start basic, refine iteratively

Issue: Inconsistent results across generations Cause: Vague descriptors allowing wide interpr