Nano Banana Pro

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. It specifies extreme detail levels (pore-level skin detail, absolute biological consistency), complex wardrobe

Prompt text

Original English text. Replace placeholders with your own details.

{
 "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"
 ]
 }
}

Source & attribution

ANKIT PATEL 🇮🇳 | AI · Awesome Nano Banana Pro Prompts

Source-listed license: CC-BY-4.0. Prompt text is preserved; titles and previews may be shortened for display. Source examples are not NexGateHub test results.

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