Favicon Specifications & Guide.

Essential Favicon File Standards (2026)

• favicon.ico (Multi-Resolution): Should contain 16x16, 32x32, and 48x48 icon frames for legacy browser compatibility.
• favicon.svg: Scalable vector format supporting adaptive dark mode CSS via `@media (prefers-color-scheme: dark)`.
• apple-touch-icon.png (180x180): Required for iOS Safari home screen bookmarks.
• android-chrome-192x192.png & 512x512.png: High-resolution icons linked in `site.webmanifest` for Android Progressive Web Apps.