Well it was quite fun this week when I was searching for the solution to online image crop but I discovered with new ideas and implement it in my app.. now I am here with somethings that I don’t even thought about to add in my app 
. Most of all thankyou so much for your solution to image crop online and your weekend to make me effort to do more research to discover some new ideas. 
And for all those who are looking for extension link and documentation guide please click the guide below 
.Thankyou.