Q: Do you have a tool to make in batch 2 PDFs from one original PDF:
One with only images and one with only text?
A: You could separate text from the rest of the graphics on the page
using the approach similar to the one illustrated in ElementEdit
sample project (http://www.pdftron.com/pdfnet/
samplecode.html#ElementEdit). In ElementEdit sample all images on the
page are removed and text color is changed to blue. Using a similar
approach you can remove all text from the page (or separate the page
into text and 'everything else').
You may also want to take a look at the following article: