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Discussion: Image Format Problem


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GeneralGuy
GeneralGuy
Image Format Problem
Jun 24 2008, 5:00 PM EDT
I tried uploading a PNG image and it turned into a JPEG when it showed up.
I know it's large, but it's a sprite sheet. its 1700x2166 and is 507 kb
http://shyguystudios.wetpaint.com/page/%7Ebig+shy+guy+sprite+sheet%7E
I'm using Flock on Vista.
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Stickmeninc
Stickmeninc
RE: Image Format Problem
Jun 24 2008, 5:06 PM EDT
All PNG images do this, I should know, I use them all of the time on my wikis. Do you find this valuable?    
GeneralGuy
GeneralGuy
RE: Image Format Problem
Jun 24 2008, 5:35 PM EDT
"All PNG images do this, I should know, I use them all of the time on my wikis."
that was the only one it happened on
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Phil_wetpaint
Phil_wetpaint
RE: Image Format Problem
Jun 24 2008, 9:39 PM EDT
GeneralGuy, it appears that you and Stickmeninc are BOTH correct.

Small PNG images are stored as PNGs. Larger PNG images appear to be converted internally to JPEG before saving. I'm not sure where the line is between "small" and "larger," but your sprite sheet definitely seems to fall on the "larger" side of it.


Phil
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GeneralGuy
GeneralGuy
RE: Image Format Problem
Jun 24 2008, 10:13 PM EDT
ok ill have to split it in two then... Do you find this valuable?    
Phil_wetpaint
Phil_wetpaint
RE: Image Format Problem
Jul 7 2008, 6:15 PM EDT
I found the answer: if an image is less than 500KB in size, it will be stored as-is. If it's larger, it will be converted to a JPEG using fairly aggressive compression, and probably losing some detail in the process.

So if you want to preserve the detail and original format of your images, they must be under 500KB.

Thanks for bringing this question up -- I always enjoy having a reason to learn something new about our system!


Phil
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