django-exposure provides a mechanism for resizing photos and streaming the resulting data as an HTTP response. It avoids the need to store the resized files on disk and assumes that you are using upstream cache.
To install the latest release (currently 1.0.5) using pip:
pip install django-exposure
To install the development version from github using pip:
pip install -e git://github.com/natgeo/django-exposure.git
Add exposure to INSTALLED_APPS:
INSTALLED_APPS = (
...
'exposure',
...
)
Add the following to your project’s settings.py file:
EXPOSURE_MAX_HEIGHT = 1000
EXPOSURE_MAX_WIDTH = 1000
EXPOSURE_EXPIRE_SECS = 3600
Then access your files as you normally would through templates:
<img src="{{ object.photo|resize:"WIDTH HEIGHT [CROP]" }}" alt="some image" />
For example, the following will yield a 200x200 version of your image, cropped:
<img src="{{ object.photo|resize:"200 200 0" }}" alt="some image" />
You can also use an alternate syntax for resize dimensions:
<img src="{{ object.photo|resize:"200x200 0" }}" alt="some image" />