What are the PDF.js keyboard shortcuts?
(warning, the following list may be incomplete)
Navigation
next page: n, j, right arrow key, click in presentation mode previous page: p, k, left arrow key, Shift + click in presentation mode The home, end, page up, page down and all arrow keys can be used to navigate the document.
Viewer controls
User interface buttons or ctrl + mouse wheel can be used to change the zooming level, but keyboard shortcuts are also available:
zoom in: ctrl + +, ctrl + = zoom out: ctrl + - restore normal zoom: ctrl + 0 rotate the document clockwise: r rotate counterclockwise: shift + r presentation mode: ctrl + alt + p (does not work in IE11) toggle hand tool: h move focus to the 'go to page' box: ctrl + alt + g (replace ctrl with meta on some configurations)