How to reduce size of a PDF file without loss of sharp graphics

Hi, I'm working in Acrobat Pro X.  I have combined a file of graphics, and need to reduce the size.  Original graphics were created in PScs6, and saved as .jpg's.  What would be the best way to reduce the overall size of the PDF file and still maintain the clarity of the graphics?  Advice would be appreciated.

When you are dealing with graphics, you are almost always talking about reducing the resolution or color depth. A lot depends on the graphics themselves. You might check one of the graphics and see what the color depth and resolution are. The 300 dpi setting is fine in most cases, unless you are wanting folks to zoom in. For many applications a color depth of 256 is fine rather than millions of colors. If those are acceptable options, be sure your graphics are set that way. You can try the Optimize to see if you can improve the size and still have adequate resolution (File>Save As>Optimize PDF).

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