What Does Your User Agent Say About You?


A user agent is a computer program representing a person, for example, a browser in a Web context.

Besides a browser, a user agent could be a bot scraping webpages, a download manager, or another app accessing the Web. Along with each request they make to the server, browsers include a self-identifying User-Agent HTTP header called a user agent (UA) string. This string often identifies the browser, its version number, and its host operating system.

Spam bots, download managers, and some browsers often send a fake UA string to announce themselves as a different client. This is known as user agent spoofing.

The user agent string can be accessed with JavaScript on the client side using the navigator.userAgent property.

A typical user agent string looks like this: "Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:35.0) Gecko/20100101 Firefox/35.0".


User Agent String

Browser Data

Ios 12 User Agent String

Christina Perez
• Sunday, 22 May, 2022
• 7 min read

We've had to do this because otherwise we get constantly overrun by inconsiderate or malfunctioning bots which overload the system. As such, we're forced to block traffic from popular web hosting companies, VPNs and Proxies, we also rate limit requests and have some other checks too.

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If you need to get access to the listings of user agents you can either get them in an easy-to-use database download or via the API. During authentication flow in Safari, we have a case when in order to satisfy a condition policy, user needs to install the app on his device.

Rv: gecko version indicates the release version of Gecko (such as 17.0 “). For compatibility, it adds strings like HTML, like Gecko and Safari.

The Opera browser is also based on the Blink engine, which is why it almost looks the same, but adds “Or/”. In this example, the useragentstring is mobile Safari’s version.

Mapping UA string tokens to a more human-readable browser name for use in code is a common pattern on the web today. When mapping the new Edge token to a browser name, Microsoft recommends using a different name than the one developer used for the legacy version of Microsoft Edge to avoid accidentally applying any legacy workarounds that are not applicable to Chromium-based browsers.

When Microsoft is notified about these types of issues, website owners are contacted and informed about the updated UA. In these cases, Microsoft uses a list of UA overrides in our Beta and Stable channels to maximize compatibility for users who access these sites.

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This will save you a lot of time and will make testing web pages a snap. Once it has completely launched, look towards the Apple Toolbar.

You will see a button labeled Advanced, click on this option. From this drop-down menu, hover over the Sergeant option.

Check back soon for more Apple related content. Obsessed with tech since the early arrival of A/UX on Apple, Suez (SK) is responsible for the editorial direction of AppleToolBox.

He is based out of Los Angeles, CA. Suez specializes in covering all things macOS, having reviewed dozens of OS X and macOS developments over the years.

In a former life, Suez worked helping Fortune 100 companies with their technology and business transformation aspirations.

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