A complex, structured prompt for Nano Banana Pro designed to transform an existing image into a clean, minimalist vector-style poster. It mandates geometric simplification, a restricted color palette (3–6 colors, no gradients), flat lighting, and the preservation of essential identity while removing all photorealistic details and textures. This prompt requires an input image to be transformed.
{ "task": "Transform the provided image into a minimal vector-style poster.", "style": { "overall_look": "Flat-design, geometric simplification, minimalist vector art", "color_palette": { "type": "restricted", "description": "Use a reduced palette of 3–6 harmonious colors with clean tonal separation and no gradients.", "constraints": [ "No photorealistic rendering", "No texture or noise", "Avoid excessive detail" ] }, "shapes": { "treatment": "Reduce all forms to essential geometric contours and solid shapes.", "linework": "Use clean, even-weight line art or optionally no outlines depending on poster coherence.", "abstraction_level": "High, but not so high that the subject becomes unrecognizable." }, "lighting": { "handling": "Remove realistic lighting. Replace shadows and highlights with simplified, flat blocks of color or omit them entirely.", "allowed_effects": ["Hard-edge shadow shapes", "Subtle tonal areas"], "forbidden_effects": ["Soft shadows", "Complex reflections", "Photographic highlights"] } }, "subject_preservation": { "identity": "Maintain recognizable identity through silhouette, proportions, key facial landmarks, and essential features.", "proportions": "Keep accurate relative scale of body, head, and major elements.", "essential_details": [ "Define only the most important features needed for recognition.", "Remove fine texture, hair strands, pores, and small clothing details." ] }, "composition": { "framing": "Match the original crop unless specified otherwise.", "background": { "treatment": "Simplify into 1–2 large flat color fields or abstract geometric forms.", "forbidden_details": ["Real textures", "Complex scenery", "Photographic depth of field"] }, "hierarchy": "Subject should remain the focal point, with background serving as supportive minimal structure." }, "color_and_balance": { "poster_aesthetic": "High clarity, bold contrast, and legible silhouette.", "white_balance": "Neutral; avoid warm or cool photographic shifts.", "edge_integrity": "All edges must be crisp, clean, and consistently stylized." }, "output_requirements": { "format": "Flat, poster-like vector appearance (though raster output is acceptable).", "resolution": "Match original image resolution unless otherwise instructed.", "consistency": "No added text, logos, watermarks, or elements not present in the original." }, "prohibited_changes": [ "Do not alter identity.", "Do not add new objects or remove essential ones.", "No stylization that contradicts minimal vector aesthetics (e.g., painterly strokes, gradients, 3D shading)." ], "goal_summary": "Create a clean, minimalist vector-style interpretation of the original image, preserving silhouette, proportions, and essential identity while removing all non-essential details and realistic lighting cues." }CC BY 4.0. Prompt pages keep the original attribution and source links from the upstream gallery records stored in the database.


