CODEWITHSUNDEEP
pythonpython-imaging-library
mohanakrishnavh
mohanakrishnavh

Reputation: 139

Why does the size of the jpg file reduce when we open and save an image using PIL in python?

Why does the size of the jpg file reduce when we open and save an image using PIL in python?

img = Image.open("Koala.jpg") # Size of the image is 763 KB
width,height = img.size
pixel_values = list(img.getdata())
im= Image.new('RGB', (1024, 768))
im.putdata(pixel_values)
im.save('test.jpeg')          # Size of the image is 142 KB

Upvotes: 2

Views: 134

Answers (1)

Hugo
Hugo

Reputation: 29314

JPEG is a lossy format. The size changes because you are saving it with Pillow's encoder which is very likely different to the one the image was originally created with. Also using a different quality makes a difference.

Upvotes: 2

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