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Browser sniffing increases maintenance needed. Websites treating some browsers differently should provide an alternative version for other browsers. Use of user agent strings are error-prone because the developer must check for the appropriate part, such as "Gecko" instead of "Firefox". They must also ensure that future versions are supported.
User agent sniffing is considered poor practice, since it encourages browser-specific design and penalizes new browsers with unrecognized user agent identifications. Instead, the W3C recommends creating standard HTML markup, [ 11 ] allowing correct rendering in as many browsers as possible, and to test for specific browser features rather than ...
On the Web, a user agent is a software agent responsible for retrieving and facilitating end-user interaction with Web content. [1] This includes all web browsers , such as Google Chrome and Safari , some email clients , standalone download managers like youtube-dl , and other command-line utilities like cURL .
This information is then used to make the application adapt in some way to suit the environment: to make use of certain APIs, or tailor for a better user experience. [1] Its proponents claim it is more reliable and future-proof than other techniques like user agent sniffing and browser-specific CSS hacks. [1]
They define how information sent/received through the connection are encoded (as in Content-Encoding), the session verification and identification of the client (as in browser cookies, IP address, user-agent) or their anonymity thereof (VPN or proxy masking, user-agent spoofing), how the server should handle data (as in Do-Not-Track or Global ...
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Edge will recognize if a page requires any of the removed technologies to run properly and suggest to the user to open the page in Internet Explorer instead. Another change was spoofing the user agent string , which claims to be Chrome and Safari , while also mentioning KHTML and Gecko , so that web servers that use user agent sniffing send ...
Maybe it was a husband trying to catch up with his wife's lover, whom he caught red-handed, or a secret service agent chasing an elusive alien in the body of an earthling...