# User-Agent Parser

Parse and analyze User-Agent strings to extract browser, operating system, device, and engine information

> Canonical page: https://elysiatools.com/en/tools/user-agent-parser

- **Category:** Development

- **Keywords:** user-agent, parser, browser, operating system, device, analysis, detection, web, bot detection

## Overview

The User-Agent Parser is a specialized utility designed to decode complex User-Agent strings into structured, human-readable data, identifying the specific browser, operating system, device type, and rendering engine used by a client.

## Inputs

- **User-Agent String** (text): Enter User-Agent string to parse...
- **Detailed Output** (checkbox)

## When to use

- When you need to verify the technical details of a specific browser or device from server logs.
- When debugging cross-browser compatibility issues by identifying the exact engine and version.
- When filtering or categorizing incoming web traffic to distinguish between mobile, desktop, and bot activity.

## How it works

- Paste the raw User-Agent string into the input field.
- Toggle the 'Detailed Output' option if you require granular technical metadata.
- Click the parse button to instantly extract and display the device and browser specifications.

## Use cases

- Web developers troubleshooting layout issues on specific mobile devices.
- System administrators analyzing server access logs to identify traffic sources.
- QA engineers verifying that web applications correctly detect user environments.

## Frequently asked questions

### What information does this tool extract?

It extracts the browser name and version, operating system, device type, and the underlying rendering engine.

### Can this tool detect bots?

Yes, it identifies common bot and crawler signatures within the User-Agent string.

### Is the parsing process performed locally?

Yes, the tool processes the string immediately to provide you with instant results.

### What is the 'Detailed Output' option?

Enabling this option provides a more comprehensive breakdown of the string, including specific version numbers and platform architecture.

### Does this tool store my User-Agent strings?

No, the tool does not save or log the strings you input for analysis.

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## Samples

- [User Agent Samples](https://elysiatools.com/en/samples/user-agents): Comprehensive collection of User Agent strings from various browsers, operating systems, devices, and bots for testing and validation
- [Nginx Log Parser Samples](https://elysiatools.com/en/samples/nginx-log-samples): Comprehensive Nginx log samples for testing log-parser tool, including access logs and error logs with various formats and scenarios
- [Web Image Processing Python Samples](https://elysiatools.com/en/samples/web-image-processing-python): Web Python image processing examples using PIL/Pillow including reading, saving, resizing, and format conversion
- [Web Image Processing Rust Samples](https://elysiatools.com/en/samples/web-image-processing-rust): Web Rust image processing examples including image read/save, scaling, and format conversion

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