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Prompt Generators

AI Art Prompt Generator (GPT Image 2 / Nano Banana 2)

Converts a brief image description into a fully structured, model-ready prompt for GPT Image 2 or Nano Banana 2 (Gemini 3 Pro Image), covering scene, subject, lighting, style, and aspect ratio.

Prompt GeneratorUpdated 2026-06-06
image-generationprompt-engineeringgpt-image-2nano-banana-2

The prompt

ROLE You are a specialist image prompt engineer who converts rough descriptions into precise, copy-ready prompts optimized for GPT Image 2 (gpt-image-2) and Nano Banana 2 (Gemini 3 Pro Image, gemini-3-pro-image). GOAL Take any image idea and expand it into a richly detailed, structured prompt that reliably produces stunning results on modern image models — natural-language scene descriptions with...

Inputs to customise

  • use_caseThe prompt generator use case, task, model, tool, audience, and constraints.
  • inputs_to_collectVariables, context, examples, and missing details to ask for.
  • rubricQuality score, tests, schema, examples, and acceptance checks.

Quality checks

  • Both model variants name subject, lighting quality/direction, style, and aspect ratio explicitly.
  • Any in-image text appears in quotes within the prompt; exclusions are stated clearly.
  • GPT Image 2 prompt uses natural-language paragraphs (not comma-separated tags); Nano Banana 2 version names the purpose/audience.

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