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Quality jpeg Python PIL

I use python to save jpegs in lower quality

im = Image.open(file) im.save(cached_file, quality=80, optimize=True, progressive=True)

In some images, the file size of the new image is larger than the original. How can this happen? Thanks

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Is it possible that the original image was saved with quality <80? So, do you mainly use more space to save reconstruction artifacts?

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Source: https://habr.com/ru/post/914143/

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