Can you change a pdf picture file to a jpeg

I get the error message “Video not available, cannot find XYZ decompressor”! I receive a can you change a pdf picture file to a jpeg error message.

Why is the saved JPG file much bigger than the original JPG file? How can I create selection with exact size or ratio? How can I insert another image into the current image? How can I fix that?

How to extract images from the EXE Slideshow? How can I load only desired file types during the browsing? Problem: If I decrease the color depth to 8 or less BPP, the saved JPG file is always 24 BPP? How can I load file types WITHOUT any extension during the browsing? How to print only a part of the image?