What image engine does Banner Creator use?

It utilizes the Gemini 3 Pro Image model via the nanobanana skill for high-quality, prompt-accurate visual generation.

Can I use my existing logo in the banner?

Yes, the skill includes a specific workflow for incorporating existing image assets and logo characters into the generated designs.

Which aspect ratios are supported?

The skill generates at an ultra-wide 21:9 ratio and provides automated cropping tools for 2:1 (GitHub), 3:1 (Twitter), and 16:9 (Web) formats.

Do I need a separate API key?

Yes, you must have a GEMINI_API_KEY from Google AI Studio set in your environment to power the image generation process.

Where are the generated banners stored?

All assets, variations, and HTML previews are organized within a dedicated .skill-archive/banner-creator/ directory in your project.

Banner Creator Pro

Name: Banner Creator Pro
Author: ReScienceLab

byReScienceLab

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229

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设计工具

Generates and iterates on professional AI banners for GitHub, social media, and web headers with precise aspect ratio control.

Banner Creator Pro is a specialized design skill for Claude that automates the end-to-end process of creating high-quality visual assets. It guides users through requirements gathering, generates multiple style variations using AI image generation, and provides a structured workflow for feedback and refinement. Whether you need a GitHub README banner, a Twitter header, or a website hero image, this skill handles everything from prompt engineering to final cropping and archiving, ensuring your brand visuals are consistent and professional without requiring manual design software.

主要功能

01Automated cropping for GitHub (2:1), Twitter (3:1), and Web (16:9) standards

02Batch generation of 20+ AI banner variations per iteration

03Requirement-driven design focusing on brand colors, logos, and styles

04229 GitHub stars

05Integrated HTML preview system for visual asset selection

06Structured project archiving for all design iterations and source files

使用场景

01Creating professional GitHub repository banners for open-source projects

02Generating high-resolution website hero images and blog covers

03Designing consistent social media headers for Twitter, LinkedIn, and YouTube

What are Skills?·How to Install

Install with 🐟 Skill.Fish

npx skillfish add resciencelab/opc-skills banner-creator

For use in Claude.ai and ChatGPT

Download Skill