What it does
User-Agent Switcher Pro lets you change your browser’s user agent string to emulate different browsers, operating systems, and devices. Useful for testing responsive designs, accessing mobile-only sites, and web development.
540+ users
Install from Chrome Web Store →
Key features
Pre-built user agents — Includes profiles for Chrome, Firefox, Safari, Edge, Opera, and mobile devices (iPhone, Android, iPad).
Custom user agents — Add your own user agent strings for specific testing needs.
Per-tab or global — Apply user agent changes to a single tab or all tabs.
Network-level spoofing — Changes the actual HTTP header, not just navigator.userAgent. Sites see the spoofed value in their server logs.
Common use cases
- Test how your site looks to Googlebot
- Access mobile-only versions of websites
- Test responsive designs without device switching
- Bypass browser-specific restrictions
- QA across different browser identities
Included profiles
| Category | Examples |
|---|---|
| Desktop | Chrome (Windows/Mac/Linux), Firefox, Safari, Edge |
| Mobile | iPhone Safari, Android Chrome, iPad |
| Bots | Googlebot, Bingbot |
| Legacy | IE 11, older Chrome versions |
Privacy
This extension modifies HTTP headers locally. No data is collected or sent externally.
Support
Having issues? Contact us or leave a review on the Chrome Web Store.