The Comprehensive Favicon & App Icon Standards Guide for 2026
Comprehensive Technical Guide & Best Practices
1Why Favicons Are Crucial for Google SERP CTR & Brand Trust
Google prominently displays 16x16px and 32x32px website favicons next to every search result title in mobile and desktop SERPs. Websites with missing or broken favicons display a generic globe icon, which decreases user trust and lowers organic click-through rates.
Modern web standards also require support for high-DPI displays (SVG vectors), Apple iOS home screen bookmarks (180x180 PNGs), and Progressive Web App manifests for Android and ChromeOS devices.
- Google displays favicons directly next to search snippets in SERPs.
- Use an SVG icon (<link rel='icon' type='image/svg+xml'>) for infinite vector scaling and dark mode support.
- Always provide a fallback favicon.ico for legacy browsers and automated feed crawlers.