Nano Banana Pro Prompting Strategy for Stable Output
This is a comprehensive set of 10 instructions and strategies for writing effective prompts for Nano Banana Pro (Gemini 3 Pro Image), aimed at stabilizing output and avoiding garbled text. It emphasizes switching to 'Thought Mode' or 'Pro Mode', using descriptive sentences instead of keyword lists, specifying subject/background/atmosphere, and using positive language and English keywords for quality.
Prompt
①モードは必ず「思考」か「Pro」に切り替える（肌感では「思考」の方が良い）
②キーワード羅列ではなく「情景を文章で描写」する
③被写体・背景・雰囲気の3点をセットで指定
④一発で完璧を目指さず「段階的に修正」を重ねる
⑤否定表現を避け、肯定文で指示する
⑥画質キーワード（4K、high resolution）は英語で追加
⑦用途を冒頭に明記する（例：「{argument name="用途" default="提案書用の図解"}」）
⑧ネガティブプロンプトで不要な要素を除外
⑨複雑な編集は一度にやらず分割して進める
⑩よく使うプロンプトはテンプレート化して保存Prompt source
- Author
- みやび｜AI最適ビジネス研究家
- Updated
- Feb 2, 2026
- Source
- X Post
License
CC BY 4.0. Prompt pages keep the original attribution and source links from the upstream gallery records stored in the database.
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