*Instagram* is an online mobile
photo-sharing
, video-sharing
and social networking
service that enables its users to take pictures and videos, and share them on a variety of social networking platforms, such asFacebook
, Twitter
, Tumblr
and Flickr
.[7]
A distinctive feature is that it confines photos to a square shape, similar to Kodak Instamatic
and Polaroid
images, in contrast to the 4:3 aspect ratio
typically used by mobile device cameras. Users can also apply digitalfilters
to their images. The maximum duration for Instagram videos is 15 seconds.[8]