I would think there would be a script for it, perhaps. You might try the InDesign Secrets forums or the scripting forums here in the Adobe forums. I thought I had seen one, but not sure it retained info from the InDesign file (cropping, etc.).
The wonderful thing about this is that in a printed booklet of about 250 mugshots, which have to be used also on the web, it's a ****huge**** time and sanity saver.
If you are trying to re-purpose the placed images for web, you can export a PDF and force the output resolution via the export compression tab—Downsample to 72ppi for images above 72ppi would export all the images at 72ppi. Then in AcrobatPro you can export the cropped images:
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There is a script that may serve your needs.
Ran a quick test and it downsampled to a given dpi AND maintained the cropping I applied in ID.
Thanks Rob, I tried exporting from Acrobat Pro, and it does work, but it renames all of the files, so it won't work for this purpose ...
Thank you Colin ... it looks promising! Will post back with results. It's my first time using a script ...
I wonder if this is what you mean?
Can you package your file to a safe place as a back up
Run the script
From what I can see it will resize all images in the document to 100% and replace them in the layout
This is another useful script that I'd love to use, but not what I was looking for. Colin's script worked great!