Responsive Design Checker

Check how responsive is your website across device sizes

#2 Product of the DayDecember 15, 2018

Responsive Design Checker is simple tool to check responsiveness of your website across common screen sizes

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I don't know how this is at #2. It doesn't even work on most other websites, since everyone usually sets the header to same origin. Enter or Return key doesn't even work, and so you have to manually focus and press the test button. Maybe this could be a heads-up for Product Hunt to fix their X-Frame-Options or CSP.
Why would you use it instead of the device toolbar we have on chrome dev tools?
@victor_baudot Hi, chrome device toolbar is great. You can use it as well.
Sorry to say, I find chrome dev tools more useful than this.