What is Responsive Web Design Tester?
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Add-on summary
Responsive Web Design Tester is a quick and easy way to test your responsive website. Test your mobile site on different devices. This extension reflects both the size and the browser of the mobile device.
Quickly preview your websites design at the dimensions they will be seen on popular devices.
This extension also uses the correct User-Agent, but it does not render web pages in the same way as the mobile device. It is primarily for developers who want to test how a page responds to different devices.
Supports both external and internal network (localhost).
Add your own devices if you don´t find anything that suits your needs.
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Add-on safety
Risk impact
Responsive Web Design Tester requires some sensitive permissions that could impact your browser and data security. Exercise caution before installing.
Risk likelihood
Responsive Web Design Tester has earned a fairly good reputation and likely can be trusted.