画像プロンプト

Nano Banana Pro X ヘッダー画像生成プロンプト

これは、参照画像に基づいて X (Twitter) のヘッダー画像を生成するために Nano Banana Pro 向けに設計された詳細なプロンプトです。ユーザーが指定したテキストとスタイルプリセットに基づいたカスタムロゴデザインが含まれており、定義されたセーフゾーン内での構図を制御するための顔ズームオプションも提供します。以前のプロンプトの更新版であり、プロフィール画像作成の実用性に焦点を当てています。

プロンプト

# ===== USER CONTROLS =====
title_text: "{argument name="表示文字列" default="<<YOUR_TEXT>>"}"
title_style_preset: "{argument name="ロゴデザインプリセット" default="cool"}"  # cool, cute, cool_cute, luxury, pop, cyber, minimal, retro, kawaii
face_zoom: "{argument name="ズームのon/off" default="off"}"            # off, on

subject: >
  Create a 3:1 wide banner using the provided reference image content.
  The primary face must be centered inside an invisible safe zone (not drawn),
  and a title logo (derived from title_text + title_style_preset) must be placed inside the same safe zone.

composition: >
  Aspect ratio 3:1.
  Invisible safe zone (DO NOT draw it):
  - Left margin: 15% of width
  - Right margin: 15% of width
  - Top margin: 16% of height
  - Bottom margin: 16% of height
  Keep the entire face AND the entire title logo fully inside this safe zone.
  Background may extend to the edges.

action: >
  Place the reference image content with maximum fidelity.
  Auto-crop/scale/reposition to fit a 3:1 banner with no stretching.
  Detect the primary face (if multiple faces, pick the largest/most prominent).
  Center the primary face within the safe zone both horizontally and vertically.
  Never crop off the face/eyes; keep the full face comfortably inside the safe zone (not near edges).

  Face zoom behavior:
  - If face_zoom is OFF: keep the original framing as much as possible while still centering the face in the safe zone.
  - If face_zoom is ON: zoom/crop to a bust-up portrait centered on the face
    (head and shoulders visible; include upper chest; do not crop the top of the head or chin; keep facial features prominent).

  Create negative space inside the safe zone for the title logo by adjusting crop/reposition/out