Is this user agent reference completely free?

Yes! This browser user agent reference is 100% free to use with no signup, registration, or hidden fees. Browse and copy UA strings as many times as you need.

Does this tool work offline?

Yes! Once the page is loaded, you can use this user agent reference completely offline without an internet connection.

What is a User-Agent string?

A User-Agent (UA) string is a text identifier sent by browsers to web servers, containing information about the browser type, version, operating system, and device.

Why do websites check User-Agent strings?

Websites use UA strings to detect the browser and device type, enabling them to serve optimized content, apply browser-specific fixes, provide mobile-friendly layouts, or block incompatible browsers.

Can I change my User-Agent?

Yes! Most browsers allow UA modification through developer tools or extensions. This is useful for testing how websites appear on different browsers or devices without switching hardware.

Are User-Agent strings reliable for detection?

Not entirely. UA strings can be spoofed easily, and many modern browsers use similar UA strings. For critical detection, use feature detection (checking if specific APIs exist) instead of UA sniffing.

UA sniffing is the practice of parsing User-Agent strings to determine browser capabilities. It's generally discouraged in favor of feature detection, which tests for specific functionality rather than assuming based on browser identity.

Why are modern UA strings so long and complex?

UA strings have grown complex due to backward compatibility. Browsers include legacy tokens (like "Mozilla/5.0") to avoid breaking websites that check for specific strings. This historical baggage makes UA strings verbose and sometimes misleading.

Free Online Browser User Agents Reference

Free online collection of common browser User-Agent strings for Chrome, Firefox, Safari, Edge, and mobile browsers. No signup required. Essential for web development and testing. 100% free and works offline.

Chrome 120 (Windows 11)

Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.36

Chrome 120 (macOS)

Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.36

Chrome 120 (Linux)

Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.36

Firefox 121 (Windows)

Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:121.0) Gecko/20100101 Firefox/121.0

Firefox 121 (macOS)

Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:121.0) Gecko/20100101 Firefox/121.0

Firefox 121 (Linux)

Mozilla/5.0 (X11; Linux x86_64; rv:121.0) Gecko/20100101 Firefox/121.0

Safari 17 (macOS)

Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/17.0 Safari/605.1.15

Edge 120 (Windows)

Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.36 Edg/120.0.0.0

Edge 120 (macOS)

Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.36 Edg/120.0.0.0

Safari (iPhone iOS 17)

Mozilla/5.0 (iPhone; CPU iPhone OS 17_0 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/17.0 Mobile/15E148 Safari/604.1

Safari (iPad iOS 17)

Mozilla/5.0 (iPad; CPU OS 17_0 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/17.0 Mobile/15E148 Safari/604.1

Chrome (iPhone)

Mozilla/5.0 (iPhone; CPU iPhone OS 17_0 like Mac OS X) AppleWebKit/537.36 (KHTML, like Gecko) CriOS/120.0.0.0 Mobile/15E148 Safari/604.1

Chrome (Android 14)

Mozilla/5.0 (Linux; Android 14) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Mobile Safari/537.36

Firefox (Android)

Mozilla/5.0 (Android 14; Mobile; rv:121.0) Gecko/121.0 Firefox/121.0

Samsung Internet

Mozilla/5.0 (Linux; Android 14; SM-S918B) AppleWebKit/537.36 (KHTML, like Gecko) SamsungBrowser/23.0 Chrome/115.0.0.0 Mobile Safari/537.36

user agents

Free Online Browser User Agents Reference Tool Introduction

A comprehensive browser User-Agent reference featuring UA strings for all major browsers and devices. Essential for web developers, testers, and anyone working with browser detection.

User-Agent strings identify the browser, operating system, and device making a request. Our collection includes desktop browsers (Chrome, Firefox, Safari, Edge, Opera), mobile browsers (iOS, Android), and various devices.

Free Online Browser User Agents Reference User Guide

Basic Usage

Browse by Category: View UAs by browser type or device
Search: Find specific UA strings
Copy: Click to copy UA string to clipboard

Frequently Asked Questions

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