MCPInstall

favicon-gen

by jezwebMobile

Generate custom favicons from logos, text, or brand colours. Produces favicon.svg, favicon.ico, apple-touch-icon.png, icon-192/512.png, and web manifest. Use whenever the user wants a favicon, mentions replacing a CMS default favicon, converting a logo into a favicon, creating branded initials icons, or troubleshooting favicon not displaying / iOS black square / missing manifest.

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Install

Works with every agent the skills CLI supports.

npx skills add https://github.com/jezweb/claude-skills --skill favicon-gen
  1. 01

    Install

    Run the command in your project. The CLI asks which agents to install for.

  2. 02

    Describe the task

    Ask your agent for something this skill covers. It loads favicon-gen automatically when relevant.

  3. 03

    Review the result

    The agent follows the SKILL.md steps, scripts and references bundled with the skill.

SKILL.md

The instructions your agent reads when the skill is triggered.

Favicon Generator

Generate a complete favicon package from a logo, initials, or brand colours. Produces all required formats and HTML integration code.

Workflow

Step 1: Choose Your Approach

Have a logo with an icon element?
 YES -> Extract icon from logo
 NO  -> Have text/initials?
         YES -> Create monogram favicon
         NO  -> Use branded shape

Step 2: Create Source SVG

Extracted icon — copy icon paths from logo, centre in 32x32 viewBox, simplify for small sizes.

Monogram — use a template from assets/:

<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 32 32">
  <circle cx="16" cy="16" r="16" fill="#0066cc"/>
  <text x="16" y="21" font-size="16" font-weight="bold"
        text-anchor="middle" fill="#ffffff" font-family="sans-serif">AC</text>
</svg>

Branded shape — circle (universal), rounded square (modern), shield (security), hexagon (tech).

SVG templates available in assets/ directory.

Step 3: Generate All Formats

Requires ImageMagick (convert command). Install if needed: brew install imagemagick (macOS) or apt install imagemagick (Linux).

# ICO (16x16 + 32x32)
convert favicon.svg -define icon:auto-resize=16,32 favicon.ico

# Apple Touch Icon (180x180, SOLID background — transparent = black on iOS)
convert favicon.svg -resize 180x180 -background "#0066cc" -alpha remove apple-touch-icon.png

# Android/PWA icons
convert favicon.svg -resize 192x192 icon-192.png
convert favicon.svg -resize 512x512 icon-512.png

No ImageMagick? Use https://favicon.io to convert from the SVG instead.

Step 4: Create Web Manifest

Copy and customise assets/manifest.webmanifest:

{
  "name": "Your Business Name",
  "short_name": "Business",
  "icons": [
    { "src": "/icon-192.png", "sizes": "192x192", "type": "image/png" },
    { "src": "/icon-512.png", "sizes": "512x512", "type": "image/png" }
  ],
  "theme_color": "#0066cc",
  "background_color": "#ffffff",
  "display": "standalone"
}

Step 5: Add HTML Tags

<link rel="icon" type="image/svg+xml" href="/favicon.svg">
<link rel="icon" type="image/x-icon" href="/favicon.ico">
<link rel="apple-touch-icon" sizes="180x180" href="/apple-touch-icon.png">
<link rel="manifest" href="/site.webmanifest">
<meta name="theme-color" content="#0066cc">

Place all files in site root (/public/ in Vite/React).

Critical Rules

  • Always generate ALL formats — SVG, ICO, apple-touch-icon, 192, 512, manifest
  • iOS icons MUST have solid backgrounds — transparent = black square
  • Always use bold font weight for monogram text (regular disappears at 16x16)
  • Test at 16x16 — if it's not legible, simplify
  • Never launch with CMS defaults (WordPress "W", etc.)

Format Quick Reference

FormatSizeTransparencyPurpose
favicon.svgVectorYesModern browsers
favicon.ico16+32YesLegacy browsers
apple-touch-icon.png180x180NoiOS home screen
icon-192.png192x192YesAndroid
icon-512.png512x512YesPWA

Asset Files

  • assets/favicon-svg-circle.svg — Circle monogram template
  • assets/favicon-svg-square.svg — Rounded square template
  • assets/favicon-svg-shield.svg — Shield template
  • assets/manifest.webmanifest — Web manifest template

Reference Files

  • references/format-guide.md — Complete format specifications
  • references/extraction-methods.md — Logo icon extraction steps
  • references/monogram-patterns.md — Advanced monogram design
  • references/shape-templates.md — Industry-specific shapes with SVG code

FAQ

What does the favicon-gen skill do?

Generate custom favicons from logos, text, or brand colours. Produces favicon.svg, favicon.ico, apple-touch-icon.png, icon-192/512.png, and web manifest. Use whenever the user wants a favicon, mentions replacing a CMS default favicon, converting a logo into a favicon, creating branded initials icons, or troubleshooting favicon not displaying / iOS black square / missing manifest.

How do I install favicon-gen?

Run npx skills add https://github.com/jezweb/claude-skills --skill favicon-gen in your project. The skills CLI detects the agents you use and copies the skill into the right folder. For Claude Code you can also place the skill folder at ~/.claude/skills/favicon-gen/ (personal) or .claude/skills/favicon-gen/ (project).

Which AI agents can use favicon-gen?

Any agent that supports the open Agent Skills format (a folder with a SKILL.md file), including Claude Code, Codex, Cursor, GitHub Copilot, Gemini CLI, Windsurf, Cline, OpenCode and more.

Is favicon-gen safe to install?

No partner security audit is available yet. Skills can run commands and scripts, so read the SKILL.md and any bundled files before installing.

Who maintains favicon-gen?

It is published by jezweb in jezweb/claude-skills. It has 2,226 recorded installs.

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