• Zoom in: CTRL++
• Zoom out: CTRL+-
• Toggle between Fit Width and Fit Page: CTRL+\
• Rotate clockwise: CTRL+]
• Rotate counter-clockwise: CTRL+[
• Download PDF: CTRL+S
• Print PDF: CTRL+P
• Scroll one page up: PgUp
• Scroll one page down: PgDn
• Search Document: CTRL+F