It seems PNG exporting is some kind of left-over or not-(yet?)-fully implemented. The other export formats *do* have various options, but PNG does not. It can’t be coincidental that “PNG” is also missing from the list of exportable formats (at least, it is in my CS4).
Here is a small function I wrote a while ago that implements a PNG export. Since you cannot export an entire *page*, you have to target a *group* instead. So first thing the script does is over-riding all master page items on each page, so they can be included; then it adds all items on the page to a new group, and finally exports *that*.
So it changes your document — Save before running and Do Not “Save” it afterwards!
This script exports all pages in your document but can easily be rewritten to export a certain page range only.
for (pg=0; pg<app.activeDocument.pages.length; pg++)
{
page = app.activeDocument.pages[pg];
for (mas=0; mas < page.appliedMaster.pageItems.length; mas++)
try {
page.appliedMaster.pageItems[mas].override(app.activeDocument.pages[pg]);
} catch (a_bah) { }
g = page.groups.add(page.pageItems);
g.exportFile(ExportFormat.PNG_FORMAT, File(Folder.myDocuments.fsName+”/”+(page.name)+”.png”));
}
.
