Favicons Are Viewed Smaller Than You Think
Most browser tabs display a favicon at around 16 to 32 pixels square, smaller than a typical emoji. At that size, fine detail simply disappears, intricate line work blurs into a smudge, and small text becomes completely illegible. Whatever you design needs to be recognizable as a simple shape or color, not as a detailed illustration.
Why Many Logos Get Simplified for Favicon Use
It's common for brands to use a full, detailed logo on their website header but a stripped-down version, often just a single letter, a simple mark, or a basic shape, as the favicon. This isn't a downgrade; it's a deliberate adaptation to a context where detail can't survive the scale-down.
Circular Framing Works Well at Small Sizes
Because a circle removes corner detail entirely, circular favicons often read more cleanly at small sizes than square ones with sharp corners, especially against the rounded-rectangle tab shapes most browsers use. If your logo already has a circular or near-circular mark, that's usually your best starting point for a favicon.
Practical Steps to Prepare One
Start with the highest-resolution version of your logo or icon you have. Identify or create a simplified version that reads clearly as a small shape, ideally with no text. Circle crop that simplified version if it doesn't already have a round silhouette, and export at a reasonably large size, since most modern site setups will automatically generate the smaller sizes browsers need from one larger source file.
Test at Actual Size Before Publishing
Once you have a candidate favicon, view it at its real, tiny size, not zoomed in on your editing screen, before finalizing it. What looks clear at 200% zoom can turn into an unrecognizable blur at the 16 pixels a browser tab will actually use.