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Reload this Page Large Filesizes
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Art & Imaging in Linux Stuff made with The GIMP and/or others

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Old 01-19-2006   #1 (permalink)
Cabhan
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Large Filesizes
Alrighty. This isn't GIMP-specific, but it is an image issue.

I was making a wallpaper from today's APoD. The image is at:

http://antwrp.gsfc.nasa.gov/apod/ima.../m42_hst_f.jpg

Anyway, the filesize is 184 KB, and in JPEG.

So I used the GIMP to scale it back to 1280x1024, and I resaved it as a PNG. And its new filesize is 1.3 MB. Which is huge.


I'm curious if anyone has any ideas as to why this is, or ways to fix it.

Gracie.
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Old 01-19-2006   #2 (permalink)
Darl
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It is because .png is not equal to .jpg. One of the best formats for compression vs quality is .jpg, however, I believe, and I have not tested this, .png compression is better at smaller file sizes. As well, .jpg does not support translucency or transparency as .png does.
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Old 01-19-2006   #3 (permalink)
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That did it!

Thanks.
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