Hi guys, I’m new to Zbrush (and loving it!), and I’m wondering if it’s possible to export a compressed document. I’m always chatting with the other people in my project, and often find myself wanting to send them a picture (fast) of my work so far. To do this, I have to export to bmp from Zbrush, open in paint (or GIMP if I want to show in high quality), and export from there to either bmp or jpg to get basic compression (speeds up send time by a minute, 2MB to 79kb). Is there a way I can directly compress a document when exporting it inside zbrush so I can do this MUCH faster?
No. ZBrush will only export PSD, BMP, TIFF, or PICT.
that’s a bummer. Would be a nice feature for the next ZBrush version (and I can’t imagine it’d be more than a day’s coding)
The reason that ZBrush doesn’t export compressed files is because there’s always a loss of quality. There also are no hard and fast values for what will look good. It varies based on the image and personal preferences.
For example, if you use Photoshop’s Save For Web feature, sometimes you’ll use Maximum quality setting, but sometimes you’ll use High or even Medium. It all depends on your needs and wants.
Since there’s no “one size fits all” solution, ZBrush only exports the raw image. You can then do with it whatever you want. 
but in other apps I’ve seen quality sliders for exporting, 100 meaning uncrompressed, and 0 meaning good luck making out the picture.
Why not use a screen-capture utility?
Screen Hunter is a free grabber you call up with an assignable hot-key. Just draw a box around what you want to save. Works great with ZBrush or ANY software and costs you nothing.
Sven