Mobile Friendly Test by Search Google
PageSpeed Tools by Google Developers
Mobile Friendliness Test Tool by bing
Caution- If you are not a developer or optimizer then Don't try this tools at home , it's may damage your site structure .
Andrew Kucheriavy - Founder and CEO of Intechnic,
1-Most people have chosen mobile.
2-Most's of a site's web traffic comes from a mobile device .
3-Mobile users behave differently .
4-Mobile Users are bigger buyers.
5-Mobile users have lots on the go.
6-Mobile landing pages require different strategies .
7-Google favors mobile responsiveness.
8-Social Media shares are huge on mobile.
9-Mobile advertising is less obtrusive .
10-Having a good mobile site makes you more memorable .