About User Agent Parser & Client Deconstructor
Analyze and deconstruct HTTP User-Agent strings. Detects web browser name and major/minor version, operating system architecture, rendering engine (Blink, Gecko, WebKit), device form factor (desktop, mobile, tablet), and bot/crawler identity.
Key Capabilities & Features
- Automatic detection of current visitor User-Agent on page load
- Accurate extraction of browser name (Chrome, Safari, Firefox, Edge, Brave, Opera) and version
- Operating system identification (Windows, macOS, Linux, iOS, Android)
- Rendering engine detection (Blink, WebKit, Gecko, Trident)
- Quick test buttons for popular device User-Agent profiles (iPhone, Android, Desktop Mac, Googlebot)
How to Use User Agent Parser & Client Deconstructor
Inspect Your UA
Your current browser User-Agent is parsed automatically on launch.
Test Custom UA
Paste any User-Agent string from web server access logs to inspect the client.
Review Device Profile
Examine detailed breakdown of browser, operating system, and hardware architecture.
Privacy & In-Browser Execution Guarantee
100% Client-Side. Analyzes User-Agent strings locally without storing your device data.
Frequently Asked Questions
What is an HTTP User-Agent string?
The User-Agent header is sent by web browsers to identify software name, version, rendering engine (Blink, Gecko, WebKit), and host operating system to the web server.
Why do modern Chrome and Edge user agents include "Safari" and "Mozilla"?
This is historical compatibility legacy. Early browsers mimicked Netscape Mozilla and Apple Safari so web servers would not block them or serve degraded legacy pages.
Can websites accurately determine my device hardware from my User-Agent?
The User-Agent provides general platform info (Windows, macOS, Linux, Android, iOS). Modern browsers are phasing out fine-grained UA details in favor of Client Hints for privacy.