nano-banana-prompts
Generate optimized prompts for Gemini 2.5 Flash Image (Nano Banana). Use for image generation, crafting photo prompts, art styles, or multi-turn editing workflows with best practices.
88
83%
Does it follow best practices?
Impact
97%
1.03xAverage score across 3 eval scenarios
Passed
No known issues
Evaluation results
98%
8%Fitness App Campaign — Image Prompt Collection
Photography prompt structure and technical specs
Complete sentences
100%
80%
Recommended length
100%
100%
Lighting type named
100%
100%
Lens or focal length
0%
100%
f-stop or DOF
100%
100%
Mood or atmosphere
100%
100%
Shot type specified
100%
100%
Aspect ratio included
100%
100%
No conflicting styles
100%
100%
Composition guidance
100%
100%
Setting described
100%
100%
100%
1%Community Jazz Festival — Illustrated Event Poster Prompt
Illustration style and text rendering in prompts
Art medium specified
87%
100%
Technique described
100%
100%
Color palette named
100%
100%
Style reference included
100%
100%
Text under 25 characters
100%
100%
Max 2-3 text phrases
100%
100%
Text in quotes
100%
100%
Font style specified
100%
100%
Text position stated
100%
100%
No conflicting styles
100%
100%
Aspect ratio specified
100%
100%
93%
-1%Boutique Hotel — Room Ambiance Image Refinement Plan
Multi-turn editing workflow design
Step-by-step sequence
100%
100%
One change per step
100%
80%
No batched edits
100%
80%
Initial prompt: complete sentences
100%
100%
Initial prompt: 50-100 words
100%
100%
Initial prompt: lighting specified
100%
100%
Initial prompt: mood included
100%
100%
Iterative refinement used
100%
100%
Context reinforced in edits
100%
87%
Aspect ratio in initial prompt
0%
100%
- Repository
- secondsky/claude-skills
- Commit
90d6bd7
- Evaluated
- Agent
- Claude Code
- Model
- Claude Sonnet 4.6
Table of Contents
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