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What is User Agent parser API?

Last Updated: 1 year ago
User agent parser API

Want To Know The Browser Version And Device Type of Your Website Visitors? Here's How: that explains what is a User Agent and a User-agent parser. Plus, what are its potential use cases along with how you can use user agent API in your website or your software system to grow your business.

What is a User agent (UA)?

Each time when a web browser tries to access a website, it sends a request to that website. In that request, it encapsulates an HTTP Header called the "User Agent." This User Agent string provides information about the requesting web browser's name, operating system, device kind, and a variety of other helpful bits of information.

The User-Agent request header is a string that allows servers and network devices to get some specific information about the requesting user. This information is used to identify the application, operating system, vendor, and/or version of the requesting user agent.


The general syntax of a user agent string is as follows:

User-Agent: <product> / <product-version> <comment>

What is a User Parser? and How can it Improve your Business: an article about the benefits of using a user parser and its general uses.

What is a User Agent Parser?

The User Agent Parser or UA Parser is a program or tool that reads the User Agent string and extracts useful information from it like the name of the browser, device type, and operating system from it. It also contains information about crawlers and bots. This information can be used to grow and secure your business by customizing the user experience and preventing crawlers and attackers from accessing your website.

User agent parser

Each browser has its own unique way of formatting the user agent. It makes the parsing of the user agent a challenging task. Thus, an ordinary approach is prone to failure and is not future.

proof since UA strings do not follow any standard pattern. Some samples of famous web browser.

User Agent strings:


Mozilla/5.0 (platform; rv:geckoversion) Gecko/geckotrail Firefox/firefoxversion


Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/ Safari/537.36

Microsoft Edge:

Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/91.0.4472.124 Safari/537.36 Edg/91.0.864.59

Similarly, other web browsers have their own unique format of the UA string.

Another big challenge is the dynamic nature of the internet. You have to look up and update the parsing algorithms on daily basis. Whenever new devices, browsers, and operating systems are launched, the user agent parser must be updated to ensure the compatibility and then run tests to check if the parser is still functional. At some point, this becomes an expensive maintenance task, and over time, there is a genuine danger that you are misdetection or failing to detect a large portion of your traffic. One issue is correctly processing User-Agents.

The true challenge is keeping up with the continuously shifting sands of the device, browser, and operating system markets, which may have millions of variations when things like language and localization or side loading browsers are stacked on.

However, no worries, our powerful user agent parser online API uses robust and competent algorithms to determine a device's attributes in the shortest and most efficient manner. It can parse almost any type of user agent like Chrome, Firefox, Microsoft Edge on Windows and Mac Desktop computers, Chrome on Android, Safari on iPad, and search engine spider bots.

What is a User Agent API?

User agent parser API is a function that provides the services to use and access your User Agent parser program/system. It helps you to capture the User Agent string of a browser, crawler, and some other devices easily. Our user agent parser API use Real-time, lightweight, and fast JSON as well as XML response parser API to parse these User Agent strings.

The API supports multiple devices, browsers, crawlers, and robots. You can use it in a variety of ways. The data you can get includes the browser version, operating system version, name of the browser's scripts, language of the script, and other information about your visitor or user agent (including mobile devices).

Control your UX using User agent

Parsing User Agent Benefits,

  • How can our user agent parser API can boost your business?
    There are a lot of ways you can use the user agent parser system to increase and grow your business. However, a few most popular use cases are discussed below for your help
  • Inside knowledge of your visitors:
    The user agent parser API helps you efficiently fetch the user information and get insight into aspects of your potential visitors. By analyzing this data, one can understand user cognition and run targeted ads according to their user preferences.
    You can run ads according to the OS type of the user, device, and, or browser to narrow the gaps between your potential user.
  • Optimize content for specific mobile and device types:
    By identifying the most used device type of your users, you can focus on optimizing your website especially as per that device's requirements.
  • Protection and Security
    With our advanced user agent parser API, you can also detect the crawler and bots visiting your site. You can identify unwanted crawlers or bots and block them from visiting your site.
  • How to use and access our user agent API? Using our user agent API is very simple. All you need is to create a free account and get your unique API key for the system. You can use this API key in your website or software program to call the user agent parser system directly. The returns the parsed information in form of JSON or XML file format. Complete documentation on how to use the API is published on the site for the ease of the new users. Kindly click on this documentation link to view the detailed instructions:

Now that's it from me.

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Thank you 😊

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