Following a couple of recent postings on pdf-tools, here are a few customisations I've found handy. For scanned pdfs, 'pdf-view-auto-slice-minor-mode can be useful to turn on. You might bind it to something like s a. It auto trims the borders for each page of the pdf as it encounters them. The following sets up a variety of colour-filter modes (good for night-time viewing, or anytime really that y