Best Favicon Sizes for Websites
There are dozens of recommendations online. Here's the minimal set that actually covers 100% of users.
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What browsers request
Desktop browsers request 16×16 (tab), 32×32 (bookmark bar), and 48×48 (search results). All three live happily inside one .ico file.
What operating systems request
Windows Start menu and File Explorer can request up to 256×256. macOS prefers an .icns but accepts .ico. Bundle 16, 32, 48, 64, 128, 256 in your .ico to cover everything.
What PWAs and mobile request
Add 180×180 (apple-touch-icon) and 192×192 + 512×512 PNGs (web manifest) for clean home-screen installs.
The minimum viable set
Multi-size favicon.ico + apple-touch-icon.png (180×180) + a 512×512 PNG in your manifest. That's it.
FAQ
What is the best favicon size for websites?
Ship a multi-size favicon.ico with 16, 32, 48, 64, 128, and 256 pixels. Add 180×180 for Apple and 192/512 PNGs for PWAs.
What favicon size do browsers use in tabs?
Desktop browsers typically request 16×16 for tabs, 32×32 for bookmark bars, and 48×48 for some search results.
What is the minimum favicon setup?
A multi-size favicon.ico plus apple-touch-icon.png (180×180) and a 512×512 PNG in your web manifest.
Do I need a 256×256 favicon?
Yes for Windows shortcuts and high-DPI surfaces. Bundle it inside your .ico file.