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icon-generation

Design
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Generate app icons (SVG/PNG) and launcher icons for Android Flutter apps. Use when creating UI icons, launcher icons, or platform-ready icon assets. Handles sizing, formats, and flutter_launcher_icons integration.

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Source SKILL.md: https://github.com/majiayu000/claude-skill-registry/blob/HEAD/skills/development/icon-generation-cmwen-prompt-loop-app/SKILL.md

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Copying this prompt does not install or run the skill. Review third-party files before use. Codex skill guide

Icon Generation Skill

Concise, reusable skill for generating app icons (SVG / PNG) and launcher icons for Android Flutter apps. Designed to work with LLMs (Copilot Chat) and image generation models (DALL·E, etc.).

When to Use This Skill

  • Creating consistent, accessible, and platform-ready icons
  • Producing SVG markup or PNG assets
  • Generating image-generation prompts for app icons
  • Setting up launcher icons with flutter_launcher_icons

Important Constraints (Project-Specific)

  • Prefer vector first (SVG) whenever possible
  • Keep icons simple and legible at small sizes (24x24, 48x48)
  • Provide transparent backgrounds for app icons when requested
  • Use the project's color palette or provide color recommendations with hex codes

Flutter Icon Locations

App Icons (Launcher)

  • Android: android/app/src/main/res/mipmap-*/ (ic_launcher.png)

UI Icons

  • Place in assets/icons/ and register in pubspec.yaml
  • Use Flutter's built-in Icons class when possible
  • For custom icons, consider using flutter_svg package

Icon Sizing

Android Launcher (mipmap)

  • mdpi: 48×48 px
  • hdpi: 72×72 px
  • xhdpi: 96×96 px
  • xxhdpi: 144×144 px
  • xxxhdpi: 192×192 px

Master Icon

  • 1024×1024 px for Play Store and source

Example Prompts

1) Generate a small UI icon (SVG)

"Create a simple, single-color search icon for app UI (24x24). Provide:

  • a clean SVG with viewBox 0 0 24 24 and a compact single-path
  • recommended filename assets/icons/ic_search.svg
  • one-line alt text for accessibility Constraints: single color (use #1F2937 or suggest a high-contrast color)."

2) Generate app launcher icon

"Design an app launcher icon for a Notes app — style: flat, minimal, rounded corners, primary accent color #0057D9. Provide:

  • a 1024×1024 source image
  • export-ready PNG files for all Android mipmap sizes
  • alt text and recommended filenames Constraints: simple silhouette, good contrast at small sizes."

3) Image-generation prompt

"Create a clean, flat-style app icon. Requirements:

  • Transparent or solid background (specify preference)
  • Simple two-tone palette: primary #0EA5E9, secondary #0F172A
  • Minimalist symbol, centered, no text
  • Provide outputs: PNG 1024x1024 (source), then resize for Android mipmap sizes Negative prompts: avoid photorealism, gradients, text, heavy shadows."

Using flutter_launcher_icons

For automated icon generation, use the flutter_launcher_icons package:

  1. Add to pubspec.yaml:
dev_dependencies:
  flutter_launcher_icons: ^0.13.1

flutter_launcher_icons:
  android: true
  image_path: "assets/icon/app_icon.png"
  1. Run: flutter pub run flutter_launcher_icons

Tips

  • Always include primary color hex code and alternate suggestions
  • For UI icons, keep viewBox within 24x24 or 48x48
  • Test icons at small sizes to ensure legibility
  • Consider dark/light mode variations