ComicGen : AI Powered Comic making

This is a submission for the Google AI Studio Multimodal Challenge

What I Built

ComicGen: Your AI-Powered Comic Creation Studio

1. Introduction

ComicGen is a revolutionary, browser-based application that redefines comic creation. It leverages the immense power of Google's Gemini API to transform your ideas into fully illustrated, professional-quality comic book pages in minutes.
Forget the steep learning curve of complex design software and the need for advanced artistic skills. With ComicGen, if you can describe a scene, you can create a comic. It acts as your creative co-pilot, handling everything from character design and storyboarding to dialogue writing and final illustration. This modern, minimalist tool is designed for storytellers, writers, marketers, educators, and anyone with a story to tell, making the art of comic creation accessible to all.

2. The Power of Gemini: Your Creative Partner

At the heart of ComicGen lies Google Gemini, one of the most advanced and capable AI models in the world. Its integration is not just a feature; it is the engine that drives the entire creative process. Here’s how Gemini makes ComicGen extraordinary:

• Multi-Modal Brilliance: ComicGen seamlessly orchestrates multiple state-of-the-art models. It uses gemini-2.5-flash for its incredible speed and language understanding to generate story structures, character profiles, witty dialogue, and detailed artistic directions. It then hands those directions to the imagen-4.0-generate-001 model, a world-class image generator, to create stunning, consistent artwork.
• From Concept to Comic in Seconds: The speed is breathtaking. A user can write a single sentence describing a scene and watch as Gemini builds a complete, multi-panel page with dialogue and illustrations in under a minute. This dramatically accelerates the creative workflow from hours or days to mere moments.
• Structured Creativity: A key innovation in ComicGen is how it guides Gemini's creativity. By providing the AI with a strict JSON schema, we ensure its imaginative output is always perfectly structured and ready for the application to render. This eliminates errors and provides a reliable, predictable user experience.
• Solving Character Consistency: One of the biggest challenges in AI art is maintaining a character's appearance. ComicGen solves this by using Gemini to first generate a detailed "visual prompt" for each character. This prompt acts as an artistic DNA, ensuring that every image of that character—whether happy, surprised, or in action—is visually consistent. ### 3. Core Features #### Character Creation Studio
• AI-Powered Profiles: Simply provide a name and a few personality traits. Gemini will generate a humorous, sitcom-style introduction and a detailed visual prompt to define their look.
• Reference Image Support: Optionally upload an image to guide the AI in creating the character's visual style.
• Automatic Emotion Sprites: Upon creation, Gemini automatically generates a set of key emotion images (happy, sad, angry, surprised) for each character against a green screen, which the app then makes transparent, ready for immediate use. #### AI Story & Page Generation
• Simple Prompting: Describe what happens next in your story.
• Scene Casting: Select which of your created characters are in the scene and briefly describe their actions or feelings.
• Intelligent Layout: Gemini analyzes your prompt and generates a complete comic page, including 2-4 panels arranged logically, witty dialogue in speech bubbles, narration boxes, and detailed art prompts for each panel. #### Infinite Canvas Editor
• Limitless Space: An intuitive, infinite canvas where you can pan and zoom with ease.
• Freeform Layout: Arrange your comic pages anywhere you like.
• Automatic Arrangement: With a single click, automatically "gather" all pages into a neat vertical strip or "scatter" them across the canvas in columns for a bird's-eye view of your story. #### Professional-Grade Tooling
• Layers Panel: A familiar, powerful layers system displays your entire comic's structure. Drag and drop to reorder elements, group items together, or even move elements between pages.
• Contextual Properties Panel: Select any item on the canvas—a panel, a speech bubble, or a page—and instantly edit all its properties, from size and color to text content and font style.
• Character Browser: Your cast is always accessible in the editor's sidebar. Drag and drop character emotions directly onto the canvas to instantly add them to your scene.
• Non-Destructive Workflow: An integrated history system with unlimited undo and redo means you can experiment freely without fear of losing your work. High-Quality Export
• Multiple Formats: Export your creations as high-resolution PNG, JPG, or PDF files.
• Flexible Selection: Export your entire comic, a single page, or even just a few selected panels.
• Bind-Up to PDF: The "Bind up Full Comic" feature automatically sequences all your pages and compiles them into a single, multi-page PDF, perfect for printing or digital distribution. ### 4. How It Works: A Look Under the Hood ComicGen is a cutting-edge frontend application built with React, TypeScript, and Tailwind CSS. It runs entirely in the browser, communicating directly with the Google GenAI API.
• Character Creation: The user's input (name, personality) is sent to gemini-2.5-flash. The model returns a JSON object containing the character's introduction and a consistent visualPrompt.
• Avatar & Emotion Generation: The visualPrompt is then sent to imagen-4.0-generate-001 multiple times to create the avatar and emotion images. Crucially, the prompt instructs the AI to use a vibrant green screen background.
• Client-Side Magic: Using the HTML Canvas API, the application programmatically removes the green background from the emotion images, creating transparent assets on the fly without any server-side processing.
• Page Generation: The user's story suggestion is combined with character data and sent to gemini-2.5-flash with a responseSchema. The model returns a perfectly structured JSON object describing the entire page layout, panels, dialogue, and unique imagePrompt for each panel.
• ** Panel Illustration:** The app iterates through the generated panel data, sending each imagePrompt to imagen-4.0-generate-001 to create the final artwork. Rendering: The structured data and generated images are rendered onto the interactive canvas, where the user can refine and edit every aspect of their new comic page.

Demo

Applet link

Video

Sorry for the images,my image generation limit exceeds and im not able to shoot before.

Images

Below are image that i created and download from my applet

This challenge was a fantastic exploration of how generative AI can be a powerful co-pilot in creative fields. The Gemini API, especially with its structured JSON output, felt less like a black box and more like a true, programmable partner. ComicGen is a proof-of-concept, but it demonstrates a future where anyone can bring their stories to life, regardless of their drawing ability.
Thanks for reading! Happy coding