django-image-optimizer

Django Image Optimizer is a simple Django library that allows optimization of images by using TinyPNG or Pillow.

Installation

Django Image Optimizer is available directly from PyPI:

1. Installing the package.

$ pip install django-image-optimizer

2. Don’t forget to add 'image_optimizer' to your 'INSTALLED_APPS'.

# settings.py
INSTALLED_APPS = [
    ....
    'image_optimizer',
]

3. You have the option to use either TinyPNG or Pillow for optimizing images. Inform optimized_image which one you want to use by setting the following

# To use Pillow
OPTIMIZED_IMAGE_METHOD = 'pillow'
# To use TinyPNG
OPTIMIZED_IMAGE_METHOD = 'tinypng'

Any other string that is set for this setting will mean that optimization does not occur. If you are unsure of whether you would like to use TinyPNG or Pillow, feel free to consult the documentation of each.

If you choose to use TinyPNG, you will need to get an API key from TinyPNG. Visit https://tinypng.com/developers for more details on getting an API key. Once you have done so, add the following setting to your settings file. Note: it is a good idea to keep this secret

TINYPNG_KEY = 'your-key'

4. You may use the OptimizedImageField by importing it

from django.db import models

from image_optimizer.fields import OptimizedImageField


class MyModel(models.Model):
    ...
    image = OptimizedImageField()


class MyModel2(models.Model):
    """
    If you using OPTIMIZED_IMAGE_METHOD = 'pillow'
    You can use this optional arguments.

    This model represents a MyModel2 with a few
    fields including a `image` field which is an OptimizedImageField
    instance with `optimized_image_output_size` and
    `optimized_image_resize_method` arguments set.

    This means that image would be a resized
    version of the source image, meant to keep a given screen resolution,
    in this case (400, 300) pixels.
    """
    image = OptimizedImageField(
        upload_to="uploads/%Y/%m/%d",
        optimized_image_output_size=(400, 300),
        optimized_image_resize_method="cover"  #  "crop", "cover", "contain", "width", "height", "thumbnail" or None
    )

and saving images into it, the same way you would to a Django ImageField. The optimized image will be saved into the url field in place of the unoptimized image.

5. Or you can directly use the image_optimizer function from utils.

from image_optimizer.utils import image_optimizer


def post_image(request):
    image_data = request.FILES.get('image')
    image_data = image_optimizer(image_data=image_data,
                                 output_size=(400, 300),
                                 resize_method='cover')
    ....

P.S:

Note about TinyPNG API keys: If you obtain the free TinyPNG API token, you are limited to 500 image optimizations per month, so this function may fail if you have a lot of images. You may either obtain a paid API key, or wait until next month.

This project forked from: https://github.com/dchukhin/django_optimized_image