Migrate to User-Agent Client Hints | Articles | web.dev

The User-Agent string is a significant passive fingerprinting surface in browsers, as well as being difficult to process. However, there are all kinds of valid reasons for collecting and processing user-agent data, so what's needed is a path to a better solution. User-Agent Client Hints provide both an explicit way to declare your need for user-agent data and methods to return the data in an easy-

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`navigator.userAgent`などがDeprecatedとなり固定化されるため、その代わりとなるUser-Agent Client Hintsについて。 JavaScriptのAPIとしての`navigator.userAgentData`と`navigator.userAgentData.getHighEntropyValues`。 HTTPヘッダUA Client Hintを扱う`Accept-CH`と`Sec-