I find jhead pretty useful for removing extraneous stuff from thumbnails, though I don’t know if it deals with RGB profiles (not sure where those are stored.)

jhead is also useful for batch adjustment of timestamps if you shoot a bunch of photos with an incorrect time setting in your camera.

(jpegtran is also useful, e.g. for lossless rotation)

jpegtran -copy none -outfile new-thumb.jpg thumb.jpg

Add a bit of scripting to preserve filenames and you’re done. If you’r really out of time, let me know. I figure, having access to photo.net, I may be able to do this as well.

I’d be happy to fix the problem if I knew how. I’m not sure how to do it in the PhotoShop JavaScripts that I’m running and am definitely clueless as to how to do it on Unix in a way that doesn’t decompress and recompress the JPEGs. Any experts out there want to contribute some pointers?

(I’ve been spending a lot of time lately on Piper Malibu transition training and also need to finish my commercial helicopter rating and CFI so time at the keyboard is limited to snowstorms…)

Well, Tim, leaving useless profiles attached that make your images larger without doing anything for quality is about as big a sin a omnitting width and height tags.

Still got one of those HP keyboards to fight your way through the lynch mob, Philip?

No one has better pictures on the Web than Philip Greenspun. I don’t care how big they are or how long they take to load – and yes, I have a 56 K dial up modem – but is that supposed to be anyone else’s fault?

Philip does know about keeping Jpeg sizes small, but his new digital camera workflow seems to mess up the Jpeg thumbnails.

For the record, the first page contains 91 thumbs at 3.1MB, and the second has 46 thumbs at 1.5MB (the guideline is 200 to 300KB per page).

Reducing each thumb to 10KB would make a huge difference to the download times on a 56Kdial-up modem (less than 1/3 of the size/time).

Well, Gordon does have a point. Looks like they have the rather large Adobe RGB profile atached, for which there really is no need. Converted to sRGB and with no profile or EXIF attached, there is no reason these images should be bigger than 10K!

Clearly you do mean to complain. It all looks good to me.

I don’t mean to complain, but the Jpeg thumbnails are rather large (30KB+) and seem to have EXIF and unecessary embedded info.