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Hyper-Detailed Structured Prompt for High-Fidelity Portrait Generation

A highly structured, JSON-based prompt designed for Gemini 3.0 Nano Banana Pro, focusing on generating a high-fidelity portrait.

Hyper-Detailed Structured Prompt for High-Fidelity Portrait Generation — AI image template example
Nano Banana 2Free
ExampleHyper-Detailed Structured Prompt for High-Fidelity Portrait Generation
Prompt
Settings
Nano Banana 23:4
  • Prompt included
  • Model and format preset
  • Free template

The prompt behind this image

Copy the exact prompt behind Hyper-Detailed Structured Prompt for High-Fidelity Portrait Generation, or open it in the studio and make it yours.

Structured prompt · 48 fields
Document Header › Schema Version
4.0.0-UltraStructured
Document Header › Generation Priority
High-Fidelity Subject Retention
Document Header › Canvas › Aspect Ratio
9:16
Document Header › Canvas › Orientation
Vertical_Portrait
Core Identity Module › Biometric Lock › Source
Reference_ID_001
Core Identity Module › Biometric Lock › Fidelity Rating
1
Core Identity Module › Biometric Lock › Parameters › Face
100%_Preservation
Core Identity Module › Biometric Lock › Parameters › Body Habitus
100%_Preservation
Core Identity Module › Biometric Lock › Parameters › Skin Topography
Pore_Level_Detail
Core Identity Module › Biometric Lock › Parameters › Biological Consistency
Absolute
Core Identity Module › Anatomical State › Hair › Pigment
{argument name="hair pigment" default="Blonde"}
Core Identity Module › Anatomical State › Hair › Styling
Tight_Pulled_Back
Core Identity Module › Anatomical State › Hair › Occlusion
Zero_facial_obscuration
Core Identity Module › Anatomical State › Facial Logic › Expression
Poised
Core Identity Module › Anatomical State › Facial Logic › Eye Contact
Direct_to_Lens
Core Identity Module › Anatomical State › Facial Logic › Head Rotation
Posterior_to_Anterior_Over_Shoulder
Kinematics And Pose › Skeletal Orientation › Torso
Facing_Away_180_degrees
Kinematics And Pose › Skeletal Orientation › Neck
Rotated_toward_camera
Kinematics And Pose › Skeletal Orientation › Stance
Static_Standing
Kinematics And Pose › Spatial Anchor › Coordinate Plane
Outdoor_Porch_Balcony
Kinematics And Pose › Spatial Anchor › Surface Interaction
Weight_distributed_evenly
Material Science Wardrobe › Primary Garment Top › Classification
Long_Sleeve_Crop_Top
Material Science Wardrobe › Primary Garment Top › Chroma
{argument name="top color" default="Tan_Light_Brown"}
Material Science Wardrobe › Primary Garment Top › Textile Physics › Weave
Sheer_Knit
Raw JSON
{
  "document_header": {
    "schema_version": "4.0.0-UltraStructured",
    "generation_priority": "High-Fidelity Subject Retention",
    "canvas": {
      "aspect_ratio": "9:16",
      "orientation": "Vertical_Portrait"
    }
  },
  "core_identity_module": {
    "biometric_lock": {
      "source": "Reference_ID_001",
      "fidelity_rating": 1.0,
      "parameters": {
        "face": "100%_Preservation",
        "body_habitus": "100%_Preservation",
        "skin_topography": "Pore_Level_Detail",
        "biological_consistency": "Absolute"
      }
    },
    "anatomical_state": {
      "hair": {
        "pigment": "{argument name=\"hair pigment\" default=\"Blonde\"}",
        "styling": "Tight_Pulled_Back",
        "occlusion": "Zero_facial_obscuration"
      },
      "facial_logic": {
        "expression": "Poised",
        "eye_contact": "Direct_to_Lens",
        "head_rotation": "Posterior_to_Anterior_Over_Shoulder"
      }
    }
  },
  "kinematics_and_pose": {
    "skeletal_orientation": {
      "torso": "Facing_Away_180_degrees",
      "neck": "Rotated_toward_camera",
      "stance": "Static_Standing"
    },
    "spatial_anchor": {
      "coordinate_plane": "Outdoor_Porch_Balcony",
      "surface_interaction": "Weight_distributed_evenly"
    }
  },
  "material_science_wardrobe": {
    "primary_garment_top": {
      "classification": "Long_Sleeve_Crop_Top",
      "chroma": "{argument name=\"top color\" default=\"Tan_Light_Brown\"}",
      "textile_physics": {
        "weave": "Sheer_Knit",
        "transparency": "High_Subsurface_Scattering",
        "specular_map": "Sparkly_Crystalline_Glitter",
        "structural_integrity": "Soft_Drape"
      }
    },
    "secondary_garment_bottom": {
      "classification": "High_Waisted_Denim_Shorts",
      "chroma": "Matte_Black",
      "textile_physics": {
        "weave": "Heavy_Denim_Twill",
        "edge_finish": "Raw_Cutoff_Frayed",
        "specular_map": "Zero_Reflectivity"
      }
    }
  },
  "world_engine_environment": {
    "architecture": {
      "type": "Rustic_Balcony_Porch",
      "materials": ["Wood_Grain", "Textured_Railing"]
    },
    "biome_specification": {
      "flora": ["Tall_Pine_Trees", "Evergreen_Conifers"],
      "density_index": "Maximum_Foliage_Saturation",
      "color_profile": "Deep_Forest_Greens"
    },
    "atmospheric_system": {
      "sky_state": "Grey_Overcast",
      "cloud_cover": "100%",
      "weather_simulation": "Muted_Diffusion_No_Sunlight"
    }
  },
  "optical_render_pipeline": {
    "photographic_sim": {
      "lens_profile": "85mm_Prime_Portrait",
      "aperture": "f/2.8_Shallow_Depth",
      "iso": "100_Clean",
      "shutter_speed": "1/250_Freeze_Motion"
    },
    "lighting_model": {
      "primary": "Global_Diffused_Overcast",
      "secondary": "Subtle_Micro_Highlights_on_Knit_Sparkles",
      "shadow_type": "Ambient_Occlusion_Soft"
    }
  },
  "constraint_engine": {
    "negative_prompt_array": [
      "Face_Transformation",
      "Body_Morphing",
      "Direct_Sunlight",
      "Blue_Sky"
    ]
  }
}

How to use Hyper-Detailed Structured Prompt for High-Fidelity Portrait Generation in 3 steps

  1. 1

    Open

    The prompt is already in the box next to the preview, with the template's model and format selected.

  2. 2
    …a portrait of your subject in softgolden-hour light, 85mm…

    Personalize

    Edit the subject and creative details for your destination.

  3. 3
    Generate

    Generate

    Press Generate — your image is created in PicX Studio, so you can compare it with the original and refine one variable at a time.

Make it yours

Hyper-Detailed Structured Prompt for High-Fidelity Portrait Generation works as-is. These are the safest ways to change it without losing the look.

  • Swap the setting

    Keep the rest of the prompt and replace the location block. The current setting is “Rustic_Balcony_Porch”.

  • Swap the light

    One lighting change is enough to compare takes. Current light: “Global_Diffused_Overcast”.

  • Change one field

    Copy a single group, rewrite it, and generate again so you can see what that field is doing.

Troubleshooting Hyper-Detailed Structured Prompt for High-Fidelity Portrait Generation
If the result…WhyFix
The result drifts from the previewToo many fields changed at once.Reuse Hyper-Detailed Structured Prompt for High-Fidelity Portrait Generation as-is first, then change one group — subject, light, or setting.
Nano Banana 2 ignores part of the JSONSome models flatten or skip nested keys.Keep the same values and paste them as a short paragraph instead.

Hyper-Detailed Structured Prompt for High-Fidelity Portrait Generation questions

How do I use the Hyper-Detailed Structured Prompt for High-Fidelity Portrait Generation template?

Add your photo if the template asks for one, edit the prompt if you like — the template's model and format are already selected — and press Generate. Your version opens in PicX Studio.

Can I customize the Hyper-Detailed Structured Prompt for High-Fidelity Portrait Generation template?

Yes. You can change the subject, setting, lighting, mood, format, and available model controls before creating your image.

Is the Hyper-Detailed Structured Prompt for High-Fidelity Portrait Generation template free?

Opening and editing this template is free. Generating uses credits, shown on the Generate button when you are signed in.

Which AI model should I use?

Start with Nano Banana 2, which is the model associated with this template. You can compare another compatible model for a different finish.

Looking for something else? Browse all templates.

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