page – view FAX, image, graphic, PostScript, PDF, and typesetter output files

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 troff(1) device independent output file. 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, a 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 are:
Orig size
Restores the image to the original. All modifications are lost.
Zoom     controls magnification.
Fit      Resizes the image so that it fits in the current window.
Rotate 90
Rotates the image 90 degrees clockwise
Upside down
Toggles whether images are displayed upside–down.
Next     Displays the next page.
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,'' as needed.

page /sys/src/cmd/gs/examples/tiger.eps
Display a color PostScript file.
page /usr/inferno/icons/*.bit
Browse the Inferno bitmap library.
page –j /sys/doc/!7 /sys/doc/
Jump to page 7 in the troff manual.
man –t page | page –w
Preview this manual in a new window.

gs(1), jpg(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).