Partly this is doable because although RFC 2616 (HTTP/1.1) specifies a max URL length of 2048 bytes, all the major browsers will process URLs which are much lon

Partly this is doable because although RFC 2616 (HTTP/1.1) specifies a max URL length of 2048 bytes, all the major browsers will process URLs which are much longer, with Safari allowing URL strings up to 2GB in size![1] In 2021 probably one of the bigger blockers of giant URLs is CDNs, which impose various limits on URL size. e.g. Cloudflare limits URLs to 16kb. [1] https://github.com/apple/swift-corelibs-foundation/blob/b23dc8e249987442811e9e0097c326d7083784ac/CoreFoundation/URL.subproj/CFURLComponents_URIParser.c#L708 https://github.com/apple/swift-corelibs-foundation/blob/b23d...