How do I install the Favicon skill?

Run npx skillmds@latest add thedaviddias/favicon in your terminal (requires Node.js), paste this page's agent-chat prompt into Claude, Cursor, or any MCP-connected agent, or download the SKILL.md file and copy it into your agent's skills directory.

What does the Favicon skill do?

Use when checking whether a site has a correctly configured favicon, auditing ` ` tags in the ` `, or setting up favicon infrastructure for a new project. It is listed under Coding & Dev Tools on SkillMD.

Is Favicon safe to use?

This skill has not completed SkillMD's automated safety review yet. SkillMD never runs a skill's scripts for you; review the SKILL.md before installing.

Which AI agents work with Favicon?

This skill is tagged as working with Claude Code, Claude.ai, OpenAI Codex. SKILL.md is an open format, so most agents that read a skills directory can load it too.

Is Favicon free to use?

Yes. Installing skills from SkillMD is free, and the skill stays under its author's original license.

Who published Favicon?

thedaviddias (@thedaviddias) published this skill. Their other Agent Skills are listed on their SkillMD profile.

Favicon by thedaviddias — Agent Skill

Name: Favicon
Author: thedaviddias

File contents

Add a favicon to every page

Google displays favicons next to search results on mobile devices, making your brand immediately recognisable in the SERP. A missing or inaccessible favicon prevents Google from showing it, reducing visual brand presence in search.

Quick Reference

Provide a <link rel="icon"> pointing to a favicon file; Google uses it to identify your site in search results
Serve the favicon via HTTPS, ensure it is publicly accessible (not blocked by robots.txt), and at least 48×48px for Google's use
Include both an ICO fallback and SVG/PNG versions for broad browser and device compatibility

Check

In the page <head>, look for <link rel="icon"> or <link rel="shortcut icon"> elements. Verify: (1) The href points to an accessible URL (returns 200, not blocked by robots.txt). (2) The file is at least 48×48px (for Google Search use). (3) A PNG or SVG version is provided alongside the ICO fallback. (4) The favicon is accessible over HTTPS.

Fix

Create favicon files:
- favicon.ico (16×16 and 32×32, ICO format) — legacy browser fallback
- favicon.svg (scalable, modern browsers)
- apple-touch-icon.png (180×180 PNG) — iOS home screen
Place them in the root or /public directory.

Add to <head>:

<link rel="icon" href="/favicon.ico" sizes="any">
<link rel="icon" href="/favicon.svg" type="image/svg+xml">
<link rel="apple-touch-icon" href="/apple-touch-icon.png">

Verify the favicon URL returns a 200 response (not 404).
Check that /robots.txt does not block the favicon path.
Test Google's display using the URL Inspection tool in Search Console.

Explain

Favicons appear next to your site's name in browser tabs, bookmarks, and Google Search mobile results. Google explicitly states it uses the favicon from <link rel='icon'> for display in search results. A missing, blocked, or too-small favicon means Google cannot show your brand icon, reducing search result click-through rate.

Code Review

Check the <head> for <link rel='icon'> and <link rel='apple-touch-icon'>. Verify the href values are valid relative or absolute paths. Confirm the favicon files exist and return HTTP 200. Flag if only favicon.ico at site root is used without an explicit <link> element (relying on browser default discovery is less reliable).

For full implementation details, code examples, and framework-specific guidance, see references/rule.md.

Rule page: https://frontendchecklist.io/en/rules/seo/favicon

---name: favicondescription: Use when checking whether a site has a correctly configured favicon, auditing `<link rel='icon'>` tags in the `<head>`, or setting up favicon infrastructure for a new project.---# Add a favicon to every pageGoogle displays favicons next to search results on mobile devices, making your brand immediately recognisable in the SERP. A missing or inaccessible favicon prevents Google from showing it, reducing visual brand presence in search.## Quick Reference- Provide a `<link rel="icon">` pointing to a favicon file; Google uses it to identify your site in search results- Serve the favicon via HTTPS, ensure it is publicly accessible (not blocked by robots.txt), and at least 48×48px for Google's use- Include both an ICO fallback and SVG/PNG versions for broad browser and device compatibility## CheckIn the page `<head>`, look for `<link rel="icon">` or `<link rel="shortcut icon">` elements. Verify: (1) The href points to an accessible URL (returns 200, not blocked by robots.txt). (2) The file is at least 48×48px (for Google Search use). (3) A PNG or SVG version is provided alongside the ICO fallback. (4) The favicon is accessible over HTTPS.## Fix1. Create favicon files: - `favicon.ico` (16×16 and 32×32, ICO format) — legacy browser fallback - `favicon.svg` (scalable, modern browsers) - `apple-touch-icon.png` (180×180 PNG) — iOS home screen2. Place them in the root or `/public` directory.3. Add to `<head>`: ```html <link rel="icon" href="/favicon.ico" sizes="any"> <link rel="icon" href="/favicon.svg" type="image/svg+xml"> <link rel="apple-touch-icon" href="/apple-touch-icon.png"> ```4. Verify the favicon URL returns a 200 response (not 404).5. Check that /robots.txt does not block the favicon path.6. Test Google's display using the URL Inspection tool in Search Console.## ExplainFavicons appear next to your site's name in browser tabs, bookmarks, and Google Search mobile results. Google explicitly states it uses the favicon from `<link rel='icon'>` for display in search results. A missing, blocked, or too-small favicon means Google cannot show your brand icon, reducing search result click-through rate.## Code ReviewCheck the `<head>` for `<link rel='icon'>` and `<link rel='apple-touch-icon'>`. Verify the `href` values are valid relative or absolute paths. Confirm the favicon files exist and return HTTP 200. Flag if only `favicon.ico` at site root is used without an explicit `<link>` element (relying on browser default discovery is less reliable).---For full implementation details, code examples, and framework-specific guidance,see `references/rule.md`.Rule page: https://frontendchecklist.io/en/rules/seo/favicon

Frequently asked questions

Favicon