Implement favicons for all devices
SkillWeb & browsingLets your agent check that a website's favicon markup is correct for all devices when reviewing HTML or components.
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Then ask your AI: use the Implement favicons for all devices skill
About this capability
Use when reviewing templates, rendered HTML, or shared components related to Implement favicons for all devices. Validate the final browser-facing markup, not just the source framework abstraction.
What this skill tells your AI
The instructions your AI receives, as published by thedaviddias/front-end-checklist in skills/favicons/SKILL.md and read by ahel’s review.
Missing or low-quality favicons make sites look unprofessional in browser tabs, bookmarks, and home screens—damaging brand recognition and user trust.
Quick Reference
- Minimum: favicon.ico (32x32) + apple-touch-icon.png (180x180)
- Modern: SVG favicon with dark mode support
- PWA: Include in manifest.json with multiple sizes
- Use RealFaviconGenerator or favicons npm package
Check
Verify that all necessary favicon formats and sizes are implemented correctly for optimal display across different browsers, devices, and platforms.
Fix
Generate and implement a complete favicon set including ICO, PNG, SVG, and mobile/PWA icons with proper HTML declarations.
Explain
Explain how proper favicon implementation improves brand recognition, user experience, and ensures consistent display across all browsers and devices.
Code Review
Review templates, server-rendered HTML, and shared components that output markup related to Implement favicons for all devices. Flag exact elements, attributes, and routes where the rendered HTML violates the rule.
For full implementation details, code examples, and framework-specific guidance,
see references/rule.md.
Rule page: https://frontendchecklist.io/en/rules/html/favicons
Signals
- GitHub stars
- 74k
- Forks
- 7k
- Last commit
- Aug 2026
- Hacker News mentions
- 2
Advanced
- Catalog kind
- skill
- Gateway key
favicons- Source
- github.com/thedaviddias/front-end-checklist