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Stripping the thumbnails from EXIF

PostPosted: Sat Feb 19, 2005 3:47 pm
by ATJ
Does anyone know a way to strip the EXIF thumbnail from JPEG but still preserve the other information?

When I upload images to my website, I try to keep the size small (around 70K) so that people on dialup are not pissed off. I use PaintShopPro which I generally like although version 8.00 has a few bugs. One of the "good" bugs, however, is that it stores the thumbnail as a JPEG, and so it only a few K. When I upgraded to 8.10 it fixed many of the bugs, but changed the EXIF thumbnail to a BMP which can be as much as 50K. I ended up going back to PSP 8.00 as I hated wasting 50K+ and losing quality.

Are there any tools that can manipulate the EXIF data and either delete the thumbnail or convert it to JPEG?

Re: Stripping the thumbnails from EXIF

PostPosted: Sat Feb 19, 2005 3:57 pm
by xorl
ATJ wrote:Does anyone know a way to strip the EXIF thumbnail from JPEG but still preserve the other information?


I use jhead to automate removing thumbnails and/or exif data. It can also perform automatic lossless rotate on jpegs (with the help of jpegtran) to get them the right way up.

http://www.sentex.net/~mwandel/jhead/

PostPosted: Sat Feb 19, 2005 4:35 pm
by ATJ
Thanks Mark.