django-ultimatethumb is another Django library for generating thumbnails but has some advantages:

• Thumbnails are not generated when the templatetag is called. Instead, images are generated on demand when they are requested by the browser. This can lead to a major speedup of your page response times.
• Thumbnails can be generated from static files too (for example to downscale retina-optimized images and therefore reducing traffic).
• Generate multiple thumbnail sizes at once for use in picture html tags with multiple sources (e.g. with media queries).

django-ultimatethumb supports Python 3 only and requires at least Django 1.11.

A Python 3.6 interpreter is required in addition to pipenv.

$ poetry install

Now you're ready to run the tests:

$ make tests

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