Nano Banana Pro Profile Image Generator with Aspect Ratio Control

A detailed, structured prompt for Nano Banana Pro designed to generate new profile images, header images, or smartphone wallpapers from a reference image. It allows users to specify the aspect ratio, add custom text as a logo, choose a logo design preset (cool, cute, luxury, etc.), control face zooming, and set the logo position, ensuring the generated image is suitable for various platforms like X (Twitter) or mobile devices.

Prompt

# ===== USER CONTROLS =====
aspect_ratio: "{argument name="aspect ratio" default="3:1"}"          # examples: 3:1, 21:6, 16:9, 9:19.5, 2:1 ... (set any)
title_text: "{argument name="title text" default="<<YOUR_TEXT>>"}"
title_style_preset: "{argument name="logo style preset" default="cool"}"   # cool, cute, cool_cute, luxury, pop, cyber, minimal, retro, kawaii
face_zoom: "{argument name="face zoom" default="off"}"             # off, on
logo_position: "{argument name="logo position" default="right"}"       # up, down, left, right

subject: >
  Create a wide banner using the provided reference image content.
  The primary face must be centered, and a title logo (derived from title_text + title_style_preset)
  must be placed clearly in the composition.

composition: >
  Use the aspect ratio defined in USER CONTROLS (aspect_ratio).
  Keep important elements comfortably inside the frame with inner padding:
  - Keep the face and the title logo at least 15% away from the left/right edges.
  - Keep the face and the title logo at least 16% away from the top/bottom edges.
  Background may extend to the edges.

action: >
  Place the reference image content with maximum fidelity.
  Auto-crop/scale/reposition to fit the banner with no stretching.
  Detect the primary face (if multiple faces, pick the largest/most prominent).
  Center the primary