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How can I export both jpg and tif versions of the same file, simultaneously? In the past I've used Bridge with Dr. Brown's 123 script to do this (select a bunch of images, and simultaneously have them exported in multiple sizes/file types).
I am also curious about this, if we could export using the same format (jpg) but with different settings such as image size and sharpening settings, that would be great.
You can run multiple simultaneous exports. You can't do this in a single click, but you can start the second export before the first has completed.
Alternately, if you're on a Mac, you could just export the TIFF and create a Folder Action to make JPEGs from the TIFFs as they appear in the output folder.