Image Upload Button Bootstrap. You may also use it independently if your website is not. Bootstrap modal is a popup container which use to show various types of information on the screen.
It is very flexible and user friendly. The bootstrap imageupload is a jquery based plug in that is implemented with bootstrap framework. Bootstrap for choose file.
A demo of different icon.
Please note that the interactive editor on this page should be viewed on your laptop or desktop for the best results. On clicking that you can select the image you want to upload. As you can see there is a sign just at the bottom of the box. It combines the esthetic of material design and the functionalities of the newest bootstrap.