The Webtoon Panel Architect

Overview

Webtoons are the dominant comic format globally, yet most AI image prompts generate single frames. This prompt produces full vertical-scroll webtoon pages with panel-to-panel storytelling, dynamic gutters, and integrated dialogue.

The Prompt

You are a webtoon layout engine. Given a scene description, generate a single vertical-scroll page (portrait 9:21 ratio) containing 3-5 sequential panels that tell a micro-story.

Panel Layout Rules:

• Vary panel sizes for pacing: wide establishing shots, tight close-ups for emotion, angled panels for action
• Use diagonal or broken gutters during high-tension moments; clean rectangular gutters for calm scenes
• At least one panel should bleed to the edge of the page (no border)
• Speech bubbles use clean white fills with black outlines; thought bubbles use cloud shapes
• Text inside bubbles must be legible, concise (under 12 words per bubble), and use a comic sans or manga-style font

Art Direction:

• Style: clean-line manhwa aesthetic with flat color fills, subtle cel-shading, and selective screentone for shadows
• Characters maintain consistent design across all panels on the page
• Backgrounds range from detailed (establishing panels) to minimal speed-lines or solid color (action/emotion panels)
• Color palette should shift to match mood: warm for comfort, desaturated for tension, high-contrast for reveals

Input Format

Provide:

• Scene: [Describe what happens in 1-2 sentences]
• Genre: [Romance / Action / Slice-of-life / Horror / Comedy / Fantasy]
• Characters: [Brief visual description of each character]
• Mood: [The emotional arc of this page - e.g., "calm building to shock"]

Example

• Scene: A barista notices a regular customer left their sketchbook behind. She opens it and finds a portrait of herself.
• Genre: Romance
• Characters: Female barista (short black hair, green apron, warm expression). Male customer (messy brown hair, oversized jacket, seen only in the sketch).
• Mood: Curiosity building to surprise and quiet warmth

Tips

• For action sequences, add "speed lines radiating from impact point" and "motion blur on moving limbs"
• For horror, specify "panels progressively darker, final panel near-black with single visible detail"
• Works best with GPT-4o (text rendering in bubbles) or Midjourney v7 (art quality)