Nowadays it’s important to verify your website mobile responsive or not responsive is must because Google started ranking a website based on mobile responsiveness. Responsive web design makes your website look good on all devices such as desktops, laptops, and mobile phones, etc. Nowadays websites responsiveness play a major role in SEO also. The website must be responsive to get a better ranking in SEO. This algorithm change was happened due to 60% of users are surfing through their mobile phones so that they made the change in algorithm. Here is the list of free responsiveness checker online.
1. Ipad Peek
7. Quirk Tools
8. Design Modo
9. Pixeltuner
10. Responsivepx
Note : Please click on the above links so that you can be respective websites.