Favicon
Browser tab icon for the site. Upload under Branding; applies when you save settings.
Favicon
Small icon in the browser tab and bookmarks for this site.
Where to find it
Admin → Settings → Settings (first tab) → Branding → Favicon
Stored as branding asset (faviconUrl), not a plain SiteSetting string. Applies on Save settings. Max size about 2 MiB (ICO/PNG/SVG/JPEG/WebP/GIF).
How it works
Upload a square ICO or PNG. Browsers cache favicons hard — after replace, hard-refresh or try a private window.
Remove uses the Branding remove control for the favicon slot.
Common problems
Still see the old icon
Cache. Another browser or private window usually proves the new file is live.
Members see their own favicon on download pages
That is User branding (Mods), not this site favicon.