un1t/django-resized

Resizes image origin to specified size. Compatible with sorl-thumbnail. Inherits from ImageField.

Features

• Tested on Django 2.2, 3.0, 3.1, 3.2, 4.0
• Python 3 support

Installation

pip install django-resized

Configuration (optional)

settings.py

DJANGORESIZED_DEFAULT_SIZE = [1920, 1080]
DJANGORESIZED_DEFAULT_SCALE = 0.5
DJANGORESIZED_DEFAULT_QUALITY = 75
DJANGORESIZED_DEFAULT_KEEP_META = True
DJANGORESIZED_DEFAULT_FORCE_FORMAT = 'JPEG'
DJANGORESIZED_DEFAULT_FORMAT_EXTENSIONS = {'JPEG': ".jpg"}
DJANGORESIZED_DEFAULT_NORMALIZE_ROTATION = True

Usage

models.py

from django_resized import ResizedImageField

class MyModel(models.Model):
    ...
    image1 = ResizedImageField(size=[500, 300], upload_to='whatever')
    image2 = ResizedImageField(size=[100, 100], crop=['top', 'left'], upload_to='whatever')
    image3 = ResizedImageField(size=[100, 150], crop=['middle', 'center'], upload_to='whatever')
    image4 = ResizedImageField(scale=0.5, quality=75, upload_to='whatever')
    image5 = ResizedImageField(size=None, upload_to='whatever', force_format='PNG')
    image6 = ResizedImageField(size=[100, None], upload_to='whatever')

Options

• size - max width and height, for example [640, 480]. If a dimension is None, it will resized using the other value and maintains the ratio of the image. If size is None, the original size of the image will be kept.
• scale - a float, if not None, which will rescale the image after the image has been resized.
• crop - resize and crop. ['top', 'left'] - top left corner, ['middle', 'center'] is center cropping, ['bottom', 'right'] - crop right bottom corner.
• quality - quality of resized image 0..100, -1 means default
• keep_meta - keep EXIF and other meta data, default True
• force_format - force the format of the resized image, available formats are the one supported by pillow, default to None

How to run tests

pip install tox
tox