man(1)                         jfbview man page                         man(1)



NAME
       jfbview - PDF and image viewer for the Linux framebuffer.

SYNOPSIS
       jfbview [OPTIONS] FILE

DESCRIPTION
       jfbview is a PDF and image viewer for the Linux framebuffer.

OPTIONS
       --help, -h
              Shows help message.

       --fb=/path/to/dev
              Specifies the path to the output framebuffer device. The default
              is /dev/fb0.

       --password=xxx, -P xxx
              Unlock PDF document with the given password.

       --page=n, -p n
              Go to page n on start up.

       --zoom=n, -z n
              Set initial zoom to be n percent. For example, "-z 75" sets zoom
              to 75%.

       --zoom_to_fit
              Start in zoom-to-fit mode.

       --zoom_to_width
              Start in zoom-to-width mode. This is the default.

       --rotation=n, -r n
              Set initial rotation to n degrees clockwise.

       --color_mode=invert, -c invert
              Start in inverted color mode.

       --color_mode=sepia, -c sepia
              Start in sepia color mode.

       --format=image
              Forces the program to treat the input file as an image.

       --format=pdf
              Forces the program to treat the input file as a PDF. By default,
              the file format is detected based on its extension. If the  file
              does  not  have  a ".pdf" (case is ignored) extension, this will
              force jfbview to load it as a PDF.

       --cache_size=n
              Selects the number of pages to cache. jfbview  has  a  in-memory
              cache  of  pages rendered at a particular zoom and rotation set‐
              ting. However, you may wish to adjust the  cache  size  down  if
              this  cache is consuming too much memory, or you may wish to ad‐
              just the cache size up for increased performance. If you have an
              older  machine  with limited RAM you may want to set it close to
              zero.

KEY BINDINGS - MAIN VIEW
       jfbview has a set of vi-like key bindings and many commands can be pre‐
       fixed with a number. These are shown with a [n] prefix below.

       q      Quit.

       Tab    Open OUTLINE VIEW (table of contents, i.e., TOC; see below).

       /      Open SEARCH VIEW (see below).

       [n]arrow keys, [n]h/l/k/j
              Move left/right/up/down.

       [n]Space/^F
              Move n screens down. Default is 1.

       [n]^B  Move n screens up. Default is 1.

       [n]PageDown/PageUp
              Go down / up n pages. Default is 1.

       [n]=/+ Zoom in n times. Default is 1.

       [n]-   Zoom out n times. Default is 1.

       s      Zoom to screen width.

       a      Zoom to fit.

       HOME/END
              Go to first / last page in document.

       [n]G/g Go to page n. Default for G is last page; default for g is first
              page.

       [n]m   Save current position, zoom and rotation in document in bookmark
              n. The default is 0.

       [n]`   Restore saved position, zoom and rotation in bookmark n. The de‐
              fault is 0.

       [n]r   Set rotation to n degrees. Default is 0.

       [n]>/. Rotate 90 degrees clockwise n times. Default is 1.

       [n]</, Rotate 90 degrees counter-clockwise n times. Default is 1.

       [n]z   Set zoom to n percent.

       e      Reload current file from disk.

       I      Toggle inverted color mode.

       S      Toggle sepia color mode.

KEY BINDINGS - OUTLINE VIEW
       The outline view is toggled by the Tab key.

       Tab/q/Esc
              Toggle outline view.

       j/Down, k/Up
              Move down or up.

       PageDown/PageUp
              Go down / up one page.

       Enter/g
              Go to selected item.

       Space  Fold/unfold selected item.

       zR     Unfold all.

       zM     Fold all.

KEY BINDINGS - SEARCH VIEW - SEARCH TEXT
       Esc    Toggle search view.

       Enter  Start search.

       Tab/Down/PageDown
              Go to search results.

KEY BINDINGS - SEARCH VIEW - SEARCH RESULTS
       q/Esc  Toggle search view.

       Space/Enter/g
              Go to selected item.

       j/Down, k/Up
              Move down or up.

       PageDown/PageUp
              Go down / up one page.

       Tab//  Go to search text.

BUGS
       Please submit bugs reports  and  any  suggestions  for  improvement  at
       https://github.com/jichu4n/jfbview/issues.

AUTHOR
       Chuan Ji (chuan@jichu4n.com)




2020-05-25                        25 May 2020                           man(1)