Image Style
Image Shape
In <img>,use different class like .img-rounded , .img-circle , .img-default to style image.
<img class="img-rounded">
<img class="img-circle">
<img class="img-default">
Custom Content
Anytime you need to display a piece of content—like an image—with an optional caption. Use .caption class.
Thumbnails-default
The .thumbnail class shapes the image to a thumbnail:
Aligning images
Align images with the .pull-left, .center-block or .pull-right.
Images - Responsive
Create responsive images by adding an .img-responsive class to the img tag. It applies display: block; and max-width: 100%; and height: auto; to the image: