: Include interactive elements that rely on mouse-hover actions, which don't exist on touchscreens.
: Enable mega-menus and secondary sidebars that require significant screen real estate. Context and Syntax sec,ch,ua,mobile:,?0
When a server identifies a user as desktop-based via this header, you should deliver: : Include interactive elements that rely on mouse-hover
The header sec-ch-ua-mobile: ?0 is a that tells a web server the request is coming from a desktop device . sec,ch,ua,mobile:,?0
: Deliver larger images or background videos that might be too heavy for mobile data connections.
: It is a "low-entropy" hint, meaning browsers like Chrome send it by default on every secure (HTTPS) request without the server needing to ask for it.
: Serve expansive, multi-column designs rather than single-column mobile stacks.