The User-Agent string identifies the type of web browser you are using. User agents are snippets of code written by web browsers. Your browser tells websites who you are.
User-Agent Lookup Tool helps you to identify your web browser information. This tool relies on the following libraries to find out the requisite information. These are JavaScript libraries that assist in browser detection.
If you are having difficulty using User-Agent lookup, Please Report a Problem.
Navigator userAgent property is used to send the User-Agent and other HTTP headers to inform the web servers of its identity.
| Your Browser | Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com) |
|---|---|
| Browser JavaScript | Enabled |
| Browser Cookie | true |
| Browser Vendor | Google Inc. |
| Screen Size | 1280 X 720 |
| Browser Type | Desktop PC |
| Websockets |
Supported According to Modernizr |
| System Time | Sun Apr 06 2025 03:21:38 GMT+0000 (Coordinated Universal Time) |
| System Date | Sunday, April 6, 2025 |
| Time Format | 3:21:38 AM |
| Time Zone | UTC |
UAParser.js is a JavaScript library that detects the browser, Operating System, Engine, device type or model, and CPU from the User-Agent data. It has a small footprint and can be used in the browser at the client end or the node.js at the server end.
| User Agent | Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com) |
|---|---|
| Browser Name | WebKit |
| Browser Version | 537.36 |
| Browser Engine | WebKit |
| Engine Version | 537.36 |
| OS Name | undefined |
| OS Version | undefined |
| OS Architecture | undefined |
| Device Vendor | undefined |
| Device Model | undefined |
| Device Type | undefined |
Platform.js is a browser detection library that applies to all JavaScript platforms.
| Browser Name | null |
|---|---|
| Browser Version | null |
| Engine Version | WebKit |
| OS Name | null |
| Prodcut | null |
| Manufacturer | null |
| OS Device | Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com) |
When we consider the different operating systems, the User-Agent is instrumental here. For instance, if you want to check out a specific site on your mobile, the page will be tailored in size and orientation according to your mobile screen for ease of use. Similarly, if you try to access a site on your pc, the page will appear according to the screen size. User-Agent is also helpful in collecting stats on how the browser or OS is being used.
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