GPT Image Prompt
How to useCopy this prompt and paste it into ChatGPT, Gemini, Nano Banana, or your favorite AI image tool. Adjust details if needed.
Create a cheerful lock screen wallpaper for a generic iPhone or Android phone in tall 9:16 portrait ratio, using a target production canvas of 1080x1920 px. Preserve the source image’s whimsical cartoon town DNA: stacked rounded city buildings in coral pink, orange, yellow, teal, and deep navy outlines, glossy turquoise windows, soft cream cloud shapes, and a bright clean turquoise sky.
Keep the composition bottom-heavy, with the colorful fantasy city occupying the lower half and lower side edges, while the upper 35–45% remains smooth open turquoise sky for clock, status icons, widgets, Dynamic Island or camera cutout safety. Use cute icon-friendly playful geometry, rounded futuristic architecture, crisp vector-like outlines, soft daylight shading, and dreamy pastel-pop color blocking. Maintain a bright optimistic mood with high local contrast around buildings, but keep the sky low-detail, clean, and readable.
Optimize for phone display use: smooth gradient sky with no banding, vivid but controlled saturation, crisp edges, clear separation between colorful shapes, and no visual clutter in the top lock-screen zone. Keep the lower city decorative and lively, but avoid making the home-screen icon area too chaotic. The final image should feel like a polished playful mobile wallpaper, cheerful, clean, modern, and lock-screen safe.
Negative Prompt:
desktop wallpaper, laptop wallpaper, monitor framing, landscape composition, ultrawide crop, text, captions, typography, logos, watermarks, UI mockups, app icons, fake widgets, brand marks, QR codes, excessive clutter in the top clock area, busy texture behind clock, important details under notch or camera cutout, important details hidden by dock or navigation bar, cropped main subject, distorted buildings, warped windows, messy perspective, noisy gradient sky, color banding, muddy colors, oversaturated neon, harsh glow, low-resolution texture, blurry outlines, jagged edges, random artifacts, duplicated objects, unreadable lock-screen area