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Files from Export Layers are different physical file sizes.

New Here ,
Aug 11, 2020

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When I Export Layers from a 1080p 72dpi size.psd to .jpg, the physical file sizes are different.
I can’t figure out why. How can I fix this and why is it happening?

Thanks

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Import and export, Problem or error

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Files from Export Layers are different physical file sizes.

New Here ,
Aug 11, 2020

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When I Export Layers from a 1080p 72dpi size.psd to .jpg, the physical file sizes are different.
I can’t figure out why. How can I fix this and why is it happening?

Thanks

Topics

Import and export, Problem or error

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37

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Most Valuable Participant ,
Aug 11, 2020

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Data compression size change with content. How well something compresses depends on the data

JJMack

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Marko361 LATEST
New Here ,
Aug 12, 2020

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Thanks.
The images on the Layers are pretty similar. They did, though, come from very hi-res image of different original dpi's.
I just wondered if Photoshop, somehow, wasn't interpolating(?) them to 72dpi for some reason. Thought I did check in the Info Viewer. 

I know there used to be a thing where if you didn't Select All, Select Inverse and Delete the surrounding pixels, then PS kept all the invisible pixels around the edges. I tried that but it says Nothing Selected. 
I will continue investigating...

 

Thanks again. 

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