The sorl-thumbnail package provides an easy way to generate image
thumbnails.

Some of its features:
- Storage support
- Pluggable Engine support for Pillow, GraphicsMagick, ImageMagick and Wand
- Pluggable Key Value Store support (cached db and redis)
- Pluggable Backend support
- Admin integration with possibility to delete
- Dummy generation (placeholders)
- Flexible, simple syntax, generates no html
- ImageField for model that deletes thumbnails
- CSS style cropping options
- Back smart cropping, and remove borders from the images when cropping
- Margin calculation for vertical positioning
- Alternative resolutions versions of a thumbnail

WWW: https://github.com/jazzband/sorl-thumbnail