Unagent User Agent Switcher
Justin Xin
About this app
- Category Utilities
- Age 10
- Updated Jun 1, 2025
- OS IOS
Editor reviews
Unagent User Agent Switcher is a lightweight developer tool that lets you change your browser user agent instantly. Quickly test how websites render and respond across desktop, mobile, tablet, and crawler profiles without leaving the page. Key features include one click switching from the toolbar, per site rules that auto apply profiles, and support for custom user agent strings with import and export. Ideal for web developers, QA, and SEO teams who need fast, reliable responsive and cross browser testing. Simple, efficient, and unobtrusive, it streamlines debugging of headers, content negotiation, and device specific behavior. Keywords include user agent switcher, developer tools, QA testing, responsive testing, cross browser testing.
Screenshots
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How to use:
1. Download and install Unagent User Agent Switcher, then pin it to your browser toolbar.
2. Open a site you want to test and click the extension icon to view available device profiles.
3. Select a profile to switch the user agent instantly, then refresh the page to see changes if needed.
4. Create per site rules so a chosen profile applies automatically on specific domains.
5. Add custom user agent strings, set a default profile, configure keyboard shortcuts, and restore the original agent at any time.