User Agent Parser
Parse browser and device user agents instantly with this free online User Agent Parser.
Parsed Result
Understanding User Agent Strings
User agent strings help websites identify browsers, operating systems, rendering engines, and device types making a request. Browsers, mobile apps, bots, crawlers, API tools, and automated systems often send user agent data with every HTTP request.
During debugging workflows, raw user agent strings can become difficult to inspect because they contain long browser and system identifiers packed into a single line. This parser extracts the important details into a readable format for easier analysis.
The tool is useful for browser compatibility testing, analytics, SEO debugging, bot detection, traffic analysis, frontend troubleshooting, and API request inspection directly inside your browser.
How to Use the User Agent Parser
- Copy the user agent string from your browser or logs.
- Paste the user agent into the input field.
- Click Parse User Agent.
- Review the detected browser, operating system, and device type.
- Copy the parsed output if needed for debugging or reporting.
Common Use Cases
- Debugging browser compatibility issues.
- Analyzing mobile, tablet, and desktop traffic.
- Testing analytics and visitor tracking systems.
- Inspecting crawler and bot requests.
- Reviewing API requests and automated traffic sources.
- Checking browser information from server logs.
- Understanding traffic patterns during SEO audits.
Example User Agent String
Raw user agent:
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/124.0 Safari/537.36
Parsed result:
{
"Browser": "Google Chrome",
"OperatingSystem": "Windows",
"DeviceType": "Desktop"
}Frequently Asked Questions
What is a user agent string?
A user agent string is information sent by browsers, apps, or bots that identifies the browser, operating system, rendering engine, and device making the request.
Why inspect user agent strings?
User agent inspection helps debug browser compatibility issues, analyze website traffic, detect bots, test responsive behavior, and troubleshoot API requests.
Can this detect mobile devices?
Yes. The parser can identify mobile, desktop, and tablet device types based on the user agent string.
Where can I find user agent strings?
User agent strings can be copied from browser DevTools, server logs, analytics platforms, API requests, crawlers, or debugging tools.
Is parsing done on the server?
No. User agent parsing happens entirely inside your browser.
Related Tools
User agent analysis often connects with HTTP headers, browser requests, cookies, CORS debugging, analytics systems, and traffic inspection workflows.