To use django-ultimatethumb in your templates, just load the templatetags and call the ultimatethumb tag with proper parameters:

{% load ultimatethumb_tags %}
{% ultimatethumb 'mythumb' sizes='200x0,400x0' %}
{% for source in mythumb %}
        srcset="{{ source.url_2x }} 2x, {{ source.url }} 1x"
        {% if not forloop.last %}media="(max-width: {{ source.viewport.width }}px)"{% endif %}
    {% if forloop.last %}<img src="{{ source.url }}" />{% endif %}
{% endfor %}

This gives you a full-featured picture tag including multiple sources with media queries for different browser sizes and also provides retina images.

You can also use django-ultimatethumb in a much simpler way:

{% load ultimatethumb_tags %}
{% ultimatethumb 'mythumb' sizes='400x0' %}
<img src="{{ mythumb.0.url }}" />

To resize static images, just prefix the path with static:, for example:

{% load ultimatethumb_tags %}
{% ultimatethumb 'mythumb' 'static:img/logo.jpg' sizes='400x0' %}
<img src="{{ mythumb.0.url }}" />

There are many other options/parameters to pass to the templatetag. Please refer to the codebase until the documentation is more complete.

You can also pass the viewport size in addition to the requested thumbnail size:

{% load ultimatethumb_tags %}
{% ultimatethumb 'mythumb' 'static:img/logo.jpg' sizes='400x0:600x0' %}
<img src="{{ mythumb.0.url }}" />

This will set the thumbnail.viewport.width to 600.

If you want so save some characters, you might short cut the sizes by leaving out the “x0” for the auto’ed dimesion.

{% load ultimatethumb_tags %}
{% ultimatethumb 'mythumb' 'static:img/logo.jpg' sizes='400:600' %}
<img src="{{ mythumb.0.url }}" />

The sizes are now the same as if you would use sizes=’400x0,600x0’.


You can pass some options to the thumbnail tag:

  • upscale: Configures if the input should be upscaled if requested sizes are larger than source.

  • retina: Option to enable retina support (by providing both url and url_2x)

  • crop: Deside if images should be cropped if requested sizes doesn’t fit source aspect ratio.

  • quality: Configures quality for image compression

  • pngquant: Configures the pngquant compression factor


The crop option can be set to True for default gravity when cropping (which is Center). You can also pass valid GraphicsMagick gravities (North, NorthEeast, East, SouthEast, …) or their abbreviation (N, NE, E, SE, …)