Responsive Simulator

View your site on mobile & desktop viewports side by side.

Chrome Extensions Design Tools Developer Toolsローンチ 2026年7月25日

Responsive Simulator とは？

Responsive Simulator is a responsive web design checker and multi device viewport tester for developers, designers, and QA teams. View your website on mobile, tablet, and desktop viewports side by side, so you can test layouts faster without constantly resizing your browser.

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