Variable height for image assets in Django

Howard Chan

March 13, 2021 23:17

I have jpegs of paintings. The paintings have certain dimensions.

Painting 1: 52cm x 40cm

Painting 2: 30cm x 50cm

The jpeg of these images may with various widths in pixels in similar dimensions and I have uploaded them into Cloudinary using CloudinaryField in Django.

Now I want to show the thumbnails of these images by translating cm -> px. Meaning I was to show the thumbnail in 52px x 40px.  How can I use template tag to display them in the new sizes?

 

 

 

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  Erwin Lukas

  March 15, 2021 20:30

  Hi Howard,

  In digital imaging, the image is stored as pixels, physical units such as centimeters, inches, is usually a calculated based on this pixel dimension and other metadata, such as DPI (Dot Per Inch) or PPI (Pixel Per Inch). So dimensions in cm shouldn't be relevant for this intent & purposes.

  With that said, if you want to transform to 52x40px, you can specify width and height values. Example:

  https://res.cloudinary.com/demo/image/upload/w_52,h_40/sample.jpg.

  By default the above will do `crop: scaling`. To learn different kind of cropping, please refer to the following documentation: https://cloudinary.com/documentation/transformation_reference#c_crop_resize

  Hope this helps, let me know if you have any question.

  Regards,
  Erwin Lukas

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