How do extract images from my PDFs?

Image/figure extraction is disabled by default both in the Chrome Extension and Scholarcy Library web app. You can enable it in the Chrome Extension by choosing Options, and in the Library by choosing Settings, and then checking the Extract figures checkbox (about half-way down the Basic options section).

You may need to experiment with both the v1 and v2 options for the Image engine setting in the Advanced section to get the best results. Generally, the default v1 option works best for figures made up of a single bitmap, whereas v2 works well when each figure is made of multiple bitmaps or a mixture of bitmap and line drawings.