Quote:
Originally Posted by JSWolf
One thing I have seen is B&W/grayscale images saved as RGB (from the publisher).
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Sometimes saving as grayscale gives you bigger images than rgb (even if it doesn't make sense at 1st glance) I haven't archive the links to explanations but in short it's because the difference in which data is saved in both types (rgb in col. vs. I think satur. in grayscale type images) so it can be what you have seen.
As to your other statement: suggested converting from a losless (PNG) into a lossy (JPG) format as an optimisation (sic!) step is
:facepalm:.
Go and wash your mouth out for that (or your hands - you were typing)