page – view FAX, image, graphic, PostScript, PDF, and typesetter
page [ –iRw ] [ –p ppi ] [ –j addr ] [ file... ]|
Page is a general purpose document viewer. It can be used to display
the individual pages of a PostScript, PDF, or tex(1) or troff(1)
device independent output file. Tex or troff output is simply
converted to PostScript in order to be viewed. It can also be
used to view any number of graphics files (such as a FAX page,
Plan 9 image(6) file, an Inferno bitmap file, or other common
format). Page displays these in sequence. In the absence of named
files, page reads one from standard input. |
By default, page runs in the window in which it is started and leaves the window unchanged. The –R option causes page to grow the window if necessary to display the page being viewed. The –w option causes page to create a new window for itself. The newly created window will grow as under the –R option.
The –p option sets the resolution for PostScript and PDF files, in pixels per inch. The default is 100 ppi.
When viewing images with page, it listens to the image plumbing channel (see plumber(4)) for more images to display. The –i option causes page to not load any graphics files nor to read from standard input but rather to listen for ones to load from the plumbing channel.
The –j option with a page address addr jumps to the specified page on startup.
Pressing and holding button 1 permits panning about the page.
Button 2 raises a menu of operations on the current image or the
entire set. The image transformations are non–destructive and are
valid only for the currently displayed image. They are lost as
soon as another image is displayed. The button 2 menu operations
Fit Resizes the image so that it fits in the current window.
Prev Displays the previous page.
Snarf Writes the current page address to the snarf buffer.
Zerox Displays the current image in a new page window. Useful for selecting important pages from large documents.
Write Asks for a filename and writes the current image as Plan 9 bitmap.
Ext Shows the current image using external jpg(1) program in a separate window. This is mostly useful for animated gifs.
Button 3 raises a menu of the pages to be selected for viewing in any order.
Typing a q or control–D exits the program.
To go to a specific page, one can type its number followed by enter. Typing left arrow or backspace displays the previous page. Typing right arrow, space, or enter displays the next page. The up and down arrow pan up and down one half screen height, changing pages when panning off the top or bottom of the page.
Page calls gs(1) to draw each page of PostScript and PDF files.
It also calls a variety of conversion programs, such as those
described in jpg(1), to convert the various raster graphics formats
into Inferno bitmap files. Pages are converted ``on the fly,''
gs(1), jpg(1), tex(1), troff(1)|
The interface to the plumber is experimental.|
Page first appeared in Plan 9 from Bell Labs. It was rewritten
from scratch for 9front (September, 2011).|