← Back to extensions
Test websites across mobile, tablet, desktop and custom viewports. Find responsive layout and breakpoint issues faster.
Test websites across mobile, tablet, desktop and custom viewports. Find responsive layout and breakpoint issues faster.
User reviews
No reviews collected yet.
More in this category
Tampermonkey
🧑💻 Developer ToolsChange the web at will with userscripts
4.711,000,000
Free
ChromeEdgeFirefoxSafari
View details →React Developer Tools
🧑💻 Developer ToolsAdds React debugging tools to the Chrome Developer Tools. Created from revision 3cde211b0c on 10/20/2025.
4.05,000,000
FreeOpen source
ChromeEdgeFirefox
View details →Wappalyzer - Technology profiler
🧑💻 Developer ToolsIdentify web technologies
4.63,000,000
Free
ChromeEdgeFirefox
View details →