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No. 86
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>>6
that's kind of a roundabout way to do it if the metadata theory is true.
1) get Irfanview http://www.irfanview.com/
2) add the lossless jpeg transform, exif, and iptc plugins (attached archive, or iv_misc.zip on the official plugin page if you don't trust me)
3) open jpeg image with irfanview
4) press [Shift]+{J]
5) for transformation, say none (unless you need to rotate it) you can also select "Optimize JPG file" to further rearrange the data structure
6) switch from "Keep all APP markers" to "Clean all app markers"
7) all comments, exif info, iptc metadata, and thumbnails are discarded from the file completely
for png images, you can just drop them onto these utilities:
*optipng- does some quick calculations to compress the file better and decrease color depth if the image content would allow for it:
http://optipng.sourceforge.net/
*deflopt- discards all ancillary (meta) chunks from the png file and further optimizes the image data compression:
http://www.walbeehm.com/download/
gifs? just no. png works better anyway. you *can* store some text data within a gif file without hacking, but I've only run across one such file, and I've cracked open just about ever image accumulated on my HD for the past 2 1/2 years.
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