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A simple Django app to manage image/photo thumbnails. Supports remote/cloud storage systems like Amazon S3.

Project description

Build Status


  • Uses Django Storage API
  • Uses flexible meta data store. Database and Redis metadata backend supported at the moment.


  • Add thumbnails to INSTALLED_APPS in
  • Run python migrate to create database metadata backend.


    'METADATA': {
        'BACKEND': 'thumbnails.backends.metadata.DatabaseBackend',
    'STORAGE': {
        'BACKEND': '',
        # You can also use Amazon S3 or any other Django storage backends
    'SIZES': {
        'small': {
            'PROCESSORS': [
                {'PATH': 'thumbnails.processors.resize', 'width': 10, 'height': 10},
                {'PATH': 'thumbnails.processors.crop', 'width': 80, 'height': 80}
            'POST_PROCESSORS': [
                    'processor': 'thumbnails.post_processors.optimize',
                    'png_command': 'optipng -force -o7 "%(filename)s"',
                    'jpg_command': 'jpegoptim -f --strip-all "%(filename)s"',
        'large': {
            'PROCESSORS': [
                {'PATH': 'thumbnails.processors.resize', 'width': 20, 'height': 20},
                {'PATH': 'thumbnails.processors.flip', 'direction': 'horizontal'}

If you prefer to use Redis as your metadata storage backend (like I do :):

    'METADATA': {
        'PREFIX': 'thumbs',
        'BACKEND': 'thumbnails.backends.metadata.RedisBackend',
        'db': 2,
        'port': 6379,
        'host': 'localhost',

In python:

import thumbnails

class Food(models.Model):
    image = thumbnails.Field()

food = Food.objects.latest('id')
food.image.thumbnails.small  # Generates "small" sized thumbnail
food.image.thumbnails.large  # Generates "large" sized thumbnail
food.image.thumbnails.small.url  # Returns "small" sized thumbnail URL

django-thumbnails comes with a few builtin image processors:

# To use the following processors, put the arguments of processors in SIZES definition
thumbnails.processors.resize(width, height)
thumbnails.processors.crop(width, height, center)

Processors are applied sequentially in the same order of definition.

Management Commands

If you changed your size definition and want to regenerate the thumbnails, use:

python delete_thumbnails --model=app.Model --size=thumbnail_size_to_delete

Running Tests

To run tests:

`which` test thumbnails --settings=thumbnails.tests.settings --pythonpath=.


Version 0.2.1

  • Add support for Django 1.11, 2.0 and 2.1

Version 0.2.0

  • Improves performance on fields that have a large number of thumbnails
  • Add support for Django 1.8, 1.9 and 1.10

Version 0.1.3

  • Fixes deprecation warning in Django 1.8

Version 0.1.2

  • Fixes deprecation warning in Django 1.8

Version 0.1.1

  • Use shortuuid instead of uuid4() to be more space efficient

Version 0.1.0

  • First public release

As of February 2015, this library is suitable for production use and has been used for more than a year in Stamps, an Indonesian based CRM/loyalty system.

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