On 08/01/2009 01:05 PM, photocomix wrote:
>   i never noticed a similar bug, even if i used Gimp to save as copy  
> thousands
> of jpeg, and i would never believed this possible, but i have to face
> evidence
> to the point image dimensions: 90x116 Size: 547KB
> And what is really weird is that seems impossible , re-saving from gimp  as
> jpg reduce the file size...even at quality 1 ( !!) i can't shrink it

The JPEG has an embedded ICC color profile which GIMP ignores since it's 
a CMYK profile, but it keeps it around anyway and writes it to the JPEG 
if you resave it.

To see the size of the attached color profile, first extract it:

   $ exiftool -icc_profile -b -w icc lightbulb.jpg

Then look at how big it (and the image) is:

   $ du -hb lightbulb.*

which gives the output

   557168  lightbulb.icc
   560484  lightbulb.jpg

/ Martin
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