I cropped figures (*.pdf) from scientific PDF articles with the excellent Krop tool by Armin Straub:
Everything worked fine until I needed to convert my final thesis from the usual PDF format to PDF/A-1b format for archiving. Suddenly, the surrounding full page around the images (that is, the text around the cropped picture) becomes visible in the PDF/A output. Maybe because this format does not support transparency.
Is their any way to tell LaTex to not embed the whole page of the image into the document, but only the cropped part that has been "marked" by Krop? Something like a "clipping area" or anything like this?