Lookup Details From User Agent
A user agent is a string of text that identifies the browser and operating system to the web server you are connecting to.
When you connect to a website, your browser sends a user agent string to the web server. The web server can use this information to serve different web pages or just collect visitor information for analytics.
A user agent can also be used in analytics and statistics showing the browsers and operating systems in use by their visitors.
For example, a user agent string might look like this:
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko)
Chrome/58.0.3029.110 Safari/537.3
| # | Field Info | Client Data |
|---|
| # | Device Info | Navigator Data |
|---|
About User Agent Finder
User Agent Finder is a useful tool that helps you easily find the user agent for your browser
Parse a browser User-Agent string into likely browser, rendering engine, operating system, device class, and architecture details.
Key features
- What it examines Parse a browser User-Agent string into likely browser, rendering engine, operating system, device class, and architecture details.
- Analysis input Use the current browser string detected by the page or paste a complete User-Agent value from a request log.
- Signals and controls Inspect browser family/version, engine, OS, device, CPU, mobile/bot indicators, and the raw token sequence.
- How to use the result The parsed summary helps debug compatibility, segment logs, reproduce headers, and understand legacy client reports.
How to use User Agent Finder
Follow this workflow to work with User-Agent strings safely and accurately.
- Provide a sample or target Use the current browser string detected by the page or paste a complete User-Agent value from a request log.
- Choose the relevant checks Inspect browser family/version, engine, OS, device, CPU, mobile/bot indicators, and the raw token sequence.
- Run the analysis Run the analysis on the User-Agent strings and distinguish direct observations from estimates or heuristic classifications.
- Interpret the findings The parsed summary helps debug compatibility, segment logs, reproduce headers, and understand legacy client reports.
Usage tips
- Keep the raw string with parsed output because parser databases and heuristics change.
- Prefer feature detection and Client Hints for application behavior instead of brittle UA branching.
- Treat bot and device classifications as signals, not security controls.