With Responsiveness Check you can check the responsiveness of your website directly in your back-end.
With Responsiveness Check you can simulate different devices and check the responsiveness of your website directly in your backend.
No options needed, just install and activate it, then click on “Check responsiveness” on the plugins page, or go to Appearence => Customize => Responsiveness Check
Running a dynamic screen width animation, you will be able to quickly check if your design is full responsive.
The simulation takes only in account the viewport sizes.
freesoul-responsive-check
folder to the /wp-content/plugins/
directory or install it using the usual installation button in the Plugins administration page.