CODEWITHSUNDEEP
imagemagickpngjpeg
vipul
vipul

Reputation: 114

Converting png to jpeg increases image size

When I convert png to jpeg , size of image is increasing for 2 percent cases. I am using convert command of imagemagick for this. Also able to handle alpha transparency factor by maintaing white background . But , I am not getting increase in size of image . It is very well known that pngs are lossless and jpegs are lossy , then what is the specific reason and what can be work around for it.enter image description here

Please refer above mentioned example pic

Upvotes: 1

Views: 774

Answers (1)

David Jashi
David Jashi

Reputation: 4511

Try decreasing JPEG quality setting. Jpeg uses Discreet Cosine Transform (DCT) to decrease the size of spatial data, but on high quality setting with high-detailed input images you will get some size increase due to the fact, that data is not quantized enough and DCT-ed data needs some storage too.

Upvotes: 1

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