Multi backend image processing and thumbnailer
Miniature is two tools in one:
- A library providing helpers for simple image manipulation with multiple backends
- A optional Django application for easy thumbnail management
Note: Although Wand backend produce is very powerful in some areas it faces some performance issues and memory leaks.
To install Miniature with Pillow backend if you don’t have Django installed:
pip install "miniature[pillow,six]"
With wand backend if you don’t have Django installed:
pip install "miniature[wand,six]"
If you plan to use Miniature with Django you can omit the “six” dependency:
pip install "miniature[pillow]"
Miniature provides common functions to manipulate images. First thing to do is to load your processing class:
from miniature.processor import get_processor Processor = get_processor('pillow')
get_processor will automatically load miniature.processor.pillow_processor and return its Processor class. You could pass a full python path as a string to load any other processor. You can of course also load your own processor class in a traditional way.
Once you have your processor class you can work on images:
with Processor('my-image.jpg') as p: p.thumbnail(200, 200).save('my-image-mini.jpg')
Note that all image operation returns the processor instance allowing you to chain operations in a big and ugly one line operation.
save(file, [format], **options)
Save the image in file. file could be a file name or a file descriptor. format should be an available format. If not provided the extension of the file name (if any) is used or the original format of the image. Other arguments are passed to the internal save method. You could pass quality for JPEG images.
Closes the image resource and the associated file descriptor. You don’t have to call this method if you use the processor as a context manager.
Changes the image background color:
Crops the image using variable specs.
To crop with coordinates:
p.crop(10, 20, 50, 70)
To crop with a ratio and a position:
Position could be: center, top-left, top-right, bottom-right, bottom-left.
To crop with a ratio a a position offset:
p.crop(1, '-50%', 20)
Offsets are dimensions moving the cropped section from the center of the image. They could be percentage or integer (for pixels).
Finally to let the processor determine where to move the cropped zone, you can ask him to be smart (what it sometime fails to be, let’s face it):
Well, I think it’s obvious.
Creates a thumbnail of the image while keeping aspect ratio. You can pass the upscale option with True value to force the image size even when it’s smaller than provided dimensions (default is False).
Rotates the image in a counter clockwise direction following the provided angle.
Adds a border of provided width and color around image.
To be coded and documented.
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