User-Agent Parser
Parse raw User-Agent strings to extract browser name, OS version, and device type.
User Agent Parser & Inspector
Parse client User-Agent strings into browser, operating system, and engine details.
About User-Agent Parser
The User Agent Parser detects and analyzes browser User-Agent strings to extract detailed operating system, browser engine, device vendor, and hardware architecture data. It allows developers to debug device detection and cross-browser compatibility issues.
How to Use User-Agent Parser
Step 1
View auto-detected details for your current web browser device.
Step 2
Or paste any custom HTTP User-Agent string into the parser input box.
Step 3
Inspect the extracted OS, Browser, Engine, and Device breakdown.
Practical Use Cases for User-Agent Parser
Debugging Mobile vs Desktop Web Issues
Inspect exact browser version numbers (Chrome, Safari, Firefox, Edge) and OS build details.
Verifying Bot & Crawler Headers
Test User-Agent strings sent by search engine bots (Googlebot, GPTBot, Bingbot).
Checking User Device Hardware Specs
Identify device model, CPU architecture (x86_64, ARM64), and rendering engine (Blink, WebKit, Gecko).
Input & Output Examples
Parsing macOS Safari User-Agent
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15...
OS: macOS 10.15.7 | Browser: Safari 18.2 | Engine: WebKit | Device: Mac Desktop
Key Features & Performance
- ✓Auto-detects current browser User-Agent string upon loading.
- ✓Detailed breakdown: Browser Name, Version, OS, Architecture, Device Type, Engine.
- ✓Custom User-Agent string parsing box.
- ✓1-Click Copy User-Agent string.
Key Terminology & Definitions
User-Agent String
A characteristic string header sent by web browsers in HTTP requests identifying the client software and version to servers.
Rendering Engine
The core software module inside a web browser that transforms HTML, CSS, and JS code into visual pixels (e.g., Blink, WebKit, Gecko).