path: root/man/feh.pre

.Dd $DATE$
.Dt FEH 1
.Os
.
.
.Sh NAME
.
.Nm feh
.Nd image viewer and cataloguer
.
.
.Sh SYNOPSIS
.
.Nm
.Op Ar options
.Op Ar files No | Ar directories No | Ar URLs ...
.
.
.Sh VERSION
.
This manual documents
.Nm
$VERSION$
.
.Pp
.
Compile-time switches: libcurl support $MAN_CURL$, Xinerama support
$MAN_XINERAMA$, builtin EXIF support $MAN_EXIF$$MAN_DEBUG$
.
.
.Sh DESCRIPTION
.
.Nm
is a mode-based image viewer.  It is especially aimed at command line users who
need a fast image viewer without huge GUI dependencies, though it can also be
started by
.Pq graphical
file managers to view an image.
By default
.Pq unless arguments or a filelist are specified ,
.Nm
displays all files in the current directory.
.
.Pp
.
.Nm
supports filelists, various image sorting modes, image captions, HTTP and more.
Configurable keyboard and mouse shortcuts are used to control it.
.
.Pp
.
.Nm
can also be used as wallpaper setter.
.
.Pp
.
EXIF tags are supported either using exiv2 / exifgrep via
.Cm --info
.Pq see the Sx USAGE EXAMPLES No section ,
or as a builtin feature by compiling
.Nm
with exif=1. In this build of
.Nm ,
builtin EXIF support is $MAN_EXIF$.
.
.
.Sh MODES
.
.Nm
is based on various modes, which are selected at startup by command line
options.
.
.Pp
.
Slideshow mode is the default.  It opens a window and displays the first
image in it; the slideshow position can be advanced
.Pq or otherwise changed
using keyboard and mouse shortcuts.
In slideshow mode, images can be deleted either from the filelist or from the
disk, a changed filelist can also be saved to the disk and reopened at a later
time.
An image can also be read from stdin via
.Qq feh - .
.
.Pp
.
Montage mode forms a montage from the filelist.  The resulting image can be
viewed or saved, and its size can be limited by height, width or both.
.
.Pp
.
Index mode forms an index print from the filelist.  Image thumbnails are shown
along with the filename, filesize and pixel size, printed using a truetype
font of your choice.  The resulting image can be viewed or saved, and its size
can be limited by height, width or both.
.
.Pp
.
Thumbnail mode is like index mode, but the mini-images are clickable and open
the selected image in a new window.
.
.Pp
.
Multiwindow mode shows images in multiple windows, instead of as a slideshow
in one window.  Don't use with a large filelist ;)
.
.Pp
.
List mode doesn't display images.  Instead, it outputs an
.Cm ls Ns No - Ns style
listing of the files in the filelist, including image info such as size, number
of pixels, type, etc.  There is also a Customlist mode which prints image info
in a custom format specified by a printf-like format string.
.
.Pp
.
.Nm
can also list either all the loadable files in a filelist or all the
unloadable files.  This is useful for preening a directory.
.
.
.Sh SUPPORTED FORMATS
.
.Nm
can open any format supported by Imlib2, most notably jpeg, png,
pnm, tiff, and bmp. The gif format is also supported, but only for static
images. In case of animations, only the first frame will be shown.
.
If the convert binary
.Pq supplied by ImageMagick
is available, it also has limited support for many other filetypes, such as
svg, xcf and otf. Use
.Cm --magick-timeout Ar num
with a non-negative value to enable it.
.
.
.Sh OPTIONS
.
.Bl -tag -width indent
.
.It Cm -A , --action Oo Ar flag Oc Ns Oo [ Ar title ] Oc Ns Ar action
.
Specify a shell command as an action to perform on the image.  In slideshow or
multiwindow mode, the action will be run when the action_0 key is pressed, in
list mode, it will be run for each file.  In loadable/unloadable mode, it will
be run for each loadable/unloadable file, respectively.  In thumbnail mode,
clicking on an image will cause the action to run instead of opening the image.
.
.Pp
.
If
.Ar flag
is
.Qq \&; ,
.Nm
will reload the current image instead of switching to the next one
.Pq slideshow mode
or closing the window
.Pq multiwindow mode
after
executing the action.
.
If
.No [ Ar title ]
is specified
.Pq note the literal Qo \&[ Qc and Qo ] Qc ,
.Cm --draw-actions
will display
.Ar title
instead of
.Ar action
in the action list. Note that
.Ar title
must not start with a space. If it does, the action is handled as if it did
not have a title. This special case exists for backwards compatibility reasons
and makes sure that actions like
.Qq \&[ -L %F \&] && foo
still work.
.
.
.Pp
.
The action will be executed by /bin/sh.  Use format specifiers to refer to
image info, see
.Sx FORMAT SPECIFIERS
for details.  Example usage:
.Qq feh -A Qo mv ~/images/%N Qc * .
.
.It Cm --action1 No .. Cm --action9 Oo Ar flag Oc Ns Oo [ Ar title ] Oc Ns Ar action
.
Extra actions which can be set and triggered using the appropriate number key.
.
.It Cm --auto-rotate
.
.Pq only if compiled with exif=1
Automatically rotate images based on EXIF data. Does not alter the image files.
.
.It Cm -Z , --auto-zoom
.
Zoom pictures to screen size in fullscreen / fixed geometry mode.
.
.It Cm -x , --borderless
.
Create borderless windows.
.
.It Cm -P , --cache-thumbnails
.
Enable thumbnail caching in
.Pa ~/.thumbnails .
Only works with thumbnails <= 256x256 pixels.
.
.It Cm -K , --caption-path Ar path
.
Path to directory containing image captions.  This turns on caption viewing,
and if captions are found in
.Ar path ,
which is relative to the directory of each image, they are overlayed on the
displayed image.  E.g. with caption path
.Qq captions/ ,
and viewing image
.Qq images/foo.jpg ,
the caption will be looked for in
.Qq images/captions/foo.jpg.txt .
.
.It Cm -L , --customlist Ar format
.
Don't display images, print image info according to
.Ar format
instead.  See
.Sx FORMAT SPECIFIERS .
.
.It Cm --cycle-once
.
Exit
.Nm
after one loop through the slideshow.
.
.It Cm -G , --draw-actions
.
Draw the defined actions and what they do at the top-left of the image.
.
.It Cm --draw-exif
.
.Pq only if compiled with exif=1
display some EXIF information in the bottom left corner, similar to using
.Cm --info
with exiv2 / exifgrep .
.
.It Cm -d , --draw-filename
.
Draw the filename at the top-left of the image.
.
.It Cm --draw-tinted
.
Show overlay texts
.Pq as created by Cm --draw-filename No et al
on a semi-transparent background to improve their readability
.
.It Cm -f , --filelist Ar file
.
This option is similar to the playlists used by music software.  If
.Ar file
exists, it will be read for a list of files to load, in the order they appear.
The format is a list of image filenames, absolute or relative to the current
directory, one filename per line.
.
.Pp
.
If
.Ar file
doesn't exist, it will be created from the internal filelist at the end of a
viewing session.  This is best used to store the results of complex sorts
.Pq Cm -Spixels No for example
for later viewing.
.
.Pp
.
Any changes to the internal filelist
.Pq such as deleting a file or it being pruned for being unloadable
will be saved to
.Ar file
when
.Nm
exits.  You can add files to filelists by specifying them on the command line
when also specifying the list.
.
.Pp
.
If
.Ar file
is
.Qq - ,
.Nm
will read the filelist from its standard input.
.
.It Cm -e , --font Ar font
.
Set global font.  Should be a truetype font, resident in the current directory
or the font directory, and should be defined in the form fontname/points, like
.Qq myfont/12 .
.
.It Cm -C , --fontpath Ar path
.
Specify
.Ar path
as extra directory in which to search for fonts; can be used multiple times to
add multiple paths.
.
.It Cm --force-aliasing
.
Disable antialiasing for zooming, background setting etc.
.
.It Cm -I , --fullindex
.
Same as index mode, but with additional information below the thumbnails.
Works just like
.Qq feh --index --index-info \&"\&%n\en\&%S\en\&%wx\&%h\&" .
Enables
.Sx MONTAGE MODE OPTIONS .
.
.Pp
.
Note: This option needs to load all images to calculate the dimensions of the
.Nm
window, so when using it with many files it will take a while before a
.Nm
window is visible.  Use
.Cm --preload
to get a progress bar.
.
.It Cm -F , --fullscreen
.
Make the window fullscreen.
Note that in this mode, large images will always be scaled down to fit the
screen,
.Cm --zoom Ar zoom
only affects smaller images and never scales larger than necessary to fit the
screen size. The only exception is a
.Ar zoom
of 100, in which case images will always be shown at 100% zoom, no matter
their dimensions.
.
.It Cm -g , --geometry Oo Ar width No x Ar height Oc Op + Ar x No + Ar y
.
Limit (and don't change) the window size.  Takes an X-style geometry
.Ar string
like 640x480 with optional +x+y window offset.
Note that larger images will be zoomed out to fit, but you can see them at 1:1
by clicking the zoom button.
.
Also note that this option does not enforce the geometry, changing it by a tiling
WM or manually is still possible. After each resize, the resulting window size
is used as the new size limit.
.
.It Cm -Y , --hide-pointer
.
Hide the pointer
.Pq useful for slideshows .
.
.It Cm -B , --image-bg Ar style
.
Use style as background for transparent image parts and the like.
Accepted values: checks, white, black.
.
The default for windowed mode is checks, while fullscreen defaults to black.
.
.It Cm -i , --index
.
Enable Index mode.  Index mode is similar to montage mode, and accepts the
same options.  It creates an index print of thumbnails, printing the image
name beneath each thumbnail.  Index mode enables certain other options, see
.Sx INDEX MODE OPTIONS
and
.Sx MONTAGE MODE OPTIONS .
.
.It Cm --index-info Ar format
.
Show image information based on
.Ar format
below thumbnails in index / thumbnail mode.  See
.Sx FORMAT SPECIFIERS .
May contain newlines.
.
Use
.Qq --index-info So Sc
to display thumbnails without any info text
.
.Pp
.
Note: If you specify image-related formats
.Pq such as \&%w or \&%s ,
.Nm
needs to load all images to calculate the dimensions of its own window.
So when using them with many files, it will take a while before a
.Nm
window becomes visible.  Use
.Cm --preload
to get a progress bar.
.
.It Cm --info Oo Ar flag Oc Ns Ar commandline
.
Execute
.Ar commandline
and display its output in the bottom left corner of the image.  Can be used to
display e.g. image dimensions or EXIF information.  Supports
.Sx FORMAT SPECIFIERS .
.
If
.Ar flag
is set to
.Qo ; Qc ,
the output will not be displayed by default, but has to be enabled by the
toggle_info key.
.
.It Cm -k , --keep-http
.
When viewing files using HTTP,
.Nm
normally deletes the local copies after viewing, or, if caching, on exit.
This option prevents this so that you get to keep the local copies.
They will be in
.Pa /tmp
with
.Qq Nm
in the name.
.
.It Cm --insecure
.
When viewing files with HTTPS, this option disables strict hostname and peer
checking. This allows images on sites with self-signed certificates to be
opened, but is no more secure than plain HTTP.
.
.It Cm --keep-zoom-vp
.
When switching images, keep zoom and viewport settings
.Pq zoom level and X, Y offsets
.
.It Cm -l , --list
.
Don't display images.  Analyze them and display an
.Xr ls 1 - No style
listing.  Useful in scripts to hunt out images of a certain
size/resolution/type etc.
.
.It Cm -U , --loadable
.
Don't display images.  Just print out their names if imlib2 can successfully
load them.
Returns false if at least one image failed to load.
.
.It Cm --magick-timeout Ar timeout
.
Stop trying to convert unloadable files after
.Ar timeout
seconds. A negative value disables covert / magick support altogether, a value
of zero causes
.Nm
to try indefinitely. By default, magick support is disabled.
.
.It Cm --max-dimension Ar width No x Ar height
.
Only show images with width <=
.Ar width
and height <=
.Ar height .
If you only care about one parameter, set the other to 0
.Pq or a negative value .
.
.It Cm -M , --menu-font Ar font
.
Use
.Ar font
.Pq truetype, with size, like Qq yudit/12
as menu font.
.
.It Cm --min-dimension Ar width No x Ar height
.
Only show images with width >=
.Ar width
and height >=
.Ar height .
If you only care about one parameter, set the other to 0.
.
.It Cm -m , --montage
.
Enable montage mode.  Montage mode creates a new image consisting of a grid of
thumbnails of the images in the filelist.  When montage mode is selected,
certain other options become available.  See
.Sx MONTAGE MODE OPTIONS .
.
.It Cm -w , --multiwindow
.
Disable slideshow mode.  With this setting, instead of opening multiple files
in slideshow mode, multiple windows will be opened; one per file.
.
.It Cm --no-jump-on-resort
.
Don't jump to the first image after resorting the filelist.
.
.It Cm -N , --no-menus
.
Don't load or show any menus.
.
.It Cm --no-screen-clip
.
By default, window sizes are limited to the screen size.  With this option,
windows will have the size of the image inside them.  Note that they may
become very large this way, making them unmanageable in certain window
managers.
.
.It Cm --no-xinerama
.
Disable Xinerama support.  Only makes sense when you have Xinerama support
compiled in.
.
.It Cm -j , --output-dir Ar directory
.
Save files to
.Ar directory
.Pq only useful with -k
.
.It Cm -p , --preload
.
Preload images.  This doesn't mean hold them in RAM, it means run through
them and eliminate unloadable images first.  Otherwise they will be removed
as you flick through.  This also analyses the images to get data for use in
sorting, such as pixel size, type etc.  A preload run will be automatically
performed if you specify one of these sort modes.
.
.It Cm -q , --quiet
.
Don't report non-fatal errors for failed loads.  Verbose and quiet modes are
not mutually exclusive, the first controls informational messages, the second
only errors.
.
.It Cm -z , --randomize
.
When viewing multiple files in a slideshow, randomize the file list before
displaying. The list is re-randomized whenever the slideshow cycles (that is,
transitions from last to first image).
.
.It Cm -r , --recursive
.
Recursively expand any directories in the commandline arguments
to the content of those directories, all the way down to the bottom level.
.
.It Cm --no-recursive
.
Don't recursively expand any directories (enabled by default).
Useful to override theme options.
.
.It Cm -R , --reload Ar int
.
Reload filelist and current image after
.Ar int
seconds.  Useful for viewing HTTP webcams or frequently changing directories.
.Pq Note that the filelist reloading is still experimental.
.
.Pp
.
If an image is removed,
.Nm
will either show the next one or quit.  However, if an image still exists, but
can no longer be loaded,
.Nm
will continue to try loading it.
.
.It Cm -n , --reverse
.
Reverse the sort order.  Use this to invert the order of the filelist.
E.g. to sort in reverse width order, use
.Cm -nSwidth .
.
.It Cm -. , --scale-down
.
Scale images to fit window geometry (defaults to screen size when no geometry
was specified). Note that the window geometry is not updated when changing
images at the moment. This option is recommended for tiling window managers.
.
This option is ignored when in fullscreen mode.
.
.Pp
.
In tiling environments, this also causes the image to be centered in the window.
.
.It Cm --scroll-step Ar count
.
Scroll
.Ar count
pixels whenever scroll_up, scroll_down, scroll_left or scroll_right is pressed.
Note that this option accepts negative numbers in case you need to inverse the
scroll direction; see
.Sx KEYS CONFIG SYNTAX
to change it permanently.
Default: 20
.
.It Cm -D , --slideshow-delay Ar float
.
For slideshow mode, wait
.Ar float
seconds between automatically changing slides.  Useful for presentations.
Specify a negative number to set the delay
.Pq which will then be Ar float No * (-1) ,
but start
.Nm
in paused mode.
.
.It Cm -S , --sort Ar sort_type
.
The file list may be sorted according to image parameters.  Allowed sort types
are: name, filename, dirname, mtime, width, height, pixels, size, format.  For
sort modes other than name, filename, dirname, or mtime, a preload run will be
necessary, causing a delay proportional to the number of images in the list.
.
.Pp
.
The mtime sort mode sorts images by most recently modified. To sort by oldest
first, reverse the filelist with --reverse.
.
.It Cm -| , --start-at Ar filename
.
Start the filelist at
.Ar filename .
.
Note that at the moment,
.Ar filename
must match an
.Pq expanded
path in the filelist. So, if the file to be matched is passed via an absolute
path in the filelist,
.Ar filename
must be an absolute path. If the file is passed via a relative path,
.Ar filename
must be an identical relative path. This is a known issue.
See also
.Sx USAGE EXAMPLES .
.
.It Cm -T , --theme Ar theme
.
Load options from config file with name
.Ar theme
- see
.Sx THEMES CONFIG SYNTAX
for more info.  Note that commandline options always override theme options.
The theme can also be set via the program name
.Pq e.g. with symlinks ,
so by default
.Nm
will look for a
.Qq Nm
theme.
.
.It Cm -t , --thumbnails
.
Same as Index mode, but the thumbnails are clickable image launchers.
Note that
.Cm --fullscreen
and
.Cm --scale-down
do not affect the thumbnail window. They do, however, work for image windows
launched from thumbnail mode.
Also supports
.Sx MONTAGE MODE OPTIONS .
.
.It Cm -~ , --thumb-title Ar string
.
Set
.Ar title
for windows opened from thumbnail mode.  See also
.Sx FORMAT SPECIFIERS .
.
.It Cm -^ , --title Ar title
.
Set window title.  Applies to all windows except those opened from thumbnail
mode.  See
.Sx FORMAT SPECIFIERS .
.
.It Cm -u , --unloadable
.
Don't display images.  Just print out their names if imlib2 can NOT
successfully load them.
Returns false if at least one image was loadable.
.
.It Cm -V , --verbose
.
output useful information, progress bars, etc.
.
.It Cm -v , --version
.
output version information and exit.
.
.It Cm --xinerama-index Ar screen
.
Override
.Nm Ns No 's
idea of the active Xinerama screen. May be useful in certain circumstances
where the window manager places the feh window on Xinerama screen A while
.Nm
assumes that it will be placed on screen B.
.
.Pp
.
In background setting mode: When used with any option other than
.Cm --bg-tile :
Only set wallpaper on
.Ar screen .
All other screens will be filled black/white.
.
This is most useful in a Xinerama configuration with
overlapping screens.  For instance, assume you have two overlapping displays
(index 0 and 1), where index 0 is smaller. To center a background on the
display with index 0 and fill the extra space on index 1 black/white, use
.Qq --xinerama-index 0
when setting the wallpaper.
.
.It Cm --zoom Ar percent No | Cm max No | Cm fill
.
Zoom images by
.Ar percent
when in full screen mode or when window geometry is fixed.  When combined with
.Cm --auto-zoom ,
zooming will be limited to the specified
.Ar percent .
Specifying
.Cm max
is like setting
.Cm --auto-zoom ,
using
.Cm fill
makes
.Nm
zoom the image like the
.Cm --bg-fill
mode.
.
.El
.
.
.Sh MONTAGE MODE OPTIONS
.
These additional options can be used for index, montage and
.Pq partially
thumbnail mode.
.
.Bl -tag -width indent
.
.It Cm -a , --alpha Ar int
.
When drawing thumbnails onto the background, set their transparency level to
.Ar int
.Pq 0 - 255 .
.
.It Cm -b , --bg Ar file No | Cm trans
.
Use
.Ar file
as background for your montage.  With this option specified, the montage size
will default to the size of
.Ar file
if no size restrictions were specified.  Alternatively, if
.Ar file
is
.Qq trans ,
the background will be made transparent.
.
.It Cm -X , --ignore-aspect
.
By default, the montage thumbnails will retain their aspect ratios, while
fitting into thumb-width/-height.  This options forces them to be the size set
by
.Cm --thumb-width No and Cm --thumb-height .
This will prevent any empty space in the final montage.
.
.It Cm -H , --limit-height Ar pixels
.
Limit the height of the montage.
.
.It Cm -W , --limit-width Ar pixels
.
Limit the width of the montage, defaults to 800 pixels.
.
.Pp
.
If both
.Cm --limit-width No and Cm --limit-height
are specified, the montage will be exactly
.Ar width No x Ar height
pixels in dimensions.
.
.It Cm -o , --output Ar file
.
Save the created montage to
.Ar file .
.
.It Cm -O , --output-only Ar file
.
Just save the created montage to
.Ar file
without displaying it.
.
.It Cm -s , --stretch
.
Normally, if an image is smaller than the specified thumbnail size, it will
not be enlarged.  If this option is set, the image will be scaled up to fit
the thumbnail size.  Aspect ratio will be maintained unless
.Cm --ignore-aspect
is specified.
.
.It Cm -E , --thumb-height Ar pixels
.
Set thumbnail height.
.
.It Cm -y , --thumb-width Ar pixels
.
Set thumbnail width.
.
.It Cm -J , --thumb-redraw Ar n
.
Only relevant for
.Cm --thumbnails :
Redraw thumbnail window every
.Ar n
images.  In
.Nm
<= 1.5, the thumbnail image used to be redrawn after every computed thumbnail
.Pq so, it updated immediately .
However, since the redrawing takes quite long
.Pq especially for thumbnail mode on a large filelist ,
this turned out to be a major performance penalty.
As a workaround, the thumbnail image is redrawn every 10th image now by
default. Set
.Ar n No = 1
to get the old behaviour,
.Ar n No = 0
will only redraw once all thumbnails are loaded.
.
.El
.
.
.Sh INDEX MODE OPTIONS
.
.Bl -tag -width indent
.
.It Cm -@ , --title-font Ar font
.
Set font to print a title on the index, if no font is specified, no title will
be printed.
.El
.
.
.Sh BACKGROUND SETTING
.
.Nm
can also be used as a background setter.  Unless you pass the
.Cm --no-fehbg
option, it will write a script to set the current background to
.Pa ~/.fehbg .
So to have your background restored every time you start X, you can add
.Qq sh ~/.fehbg &
to your X startup script
.Pq such as Pa ~/.xinitrc .
As of
.Nm
2.13, this script is executable, so
.Qq ~/.fehbg &
will work as well.
.
.Pp
.
For the
.Cm --bg-center
and
.Cm --bg-max
options, you can use the
.Cm --geometry
option to specify an offset from one side of the screen instead of
centering the image.  Positive values will offset from the left/top
side, negative values from the bottom/right.  +0 and -0 are both
valid and distinct values.
.
.Pp
.
Note that all options except
.Cm --bg-tile
support Xinerama.
For instance, if you have multiple screens connected and use e.g.
.Cm --bg-center ,
.Nm
will center or appropriately offset the image on each screen.
You may even specify more than one file, in that case, the first file is set
on screen 0, the second on screen 1, and so on.
.
.Pp
.
Use
.Cm --no-xinerama
to treat the whole X display as one screen when setting wallpapers. You
may also use
.Cm --xinerama-index
to use
.Nm
as a background setter for a specific screen.
.
.Bl -tag -width indent
.
.It Cm --bg-center
.
Center the file on the background.  If it is too small, it will be surrounded
by a black border
.
.It Cm --bg-fill
.
Like
.Cm --bg-scale ,
but preserves aspect ratio by zooming the image until it fits.  Either a
horizontal or a vertical part of the image will be cut off
.
.It Cm --bg-max
.
Like
.Cm --bg-fill ,
but scale the image to the maximum size that fits the screen with black borders on one side.
.
.It Cm --bg-scale
.
Fit the file into the background without repeating it, cutting off stuff or
using borders.  But the aspect ratio is not preserved either
.
.It Cm --bg-tile
.
Tile
.Pq repeat
the image in case it is too small for the screen
.
.It Cm --no-fehbg
.
Do not write a
.Pa ~/.fehbg
file
.
.El
.
.
.Sh FORMAT SPECIFIERS
.
.Bl -tag -width indent
.
.It %f
.
Image path/filename
.
.It %F
.
Escaped image path/filename
.Pq for use in shell commands
.
.It %h
.
Image height
.
.It %l
.
Total number of files in filelist
.
.It %L
.
Temporary copy of filelist. Multiple uses of %L within the same format string will return the same copy.
.
.It %m
.
Current mode
.
.It %n
.
Image name
.
.It \&%N
.
Escaped image name
.
.It %o
.
x,y offset of top-left image corner to window corner in pixels
.
.It %p
.
Number of image pixels
.
.It \&%P
.
Number of image pixels
.Pq kilopixels / megapixels
.
.It %r
.
Image rotation. A half right turn equals pi.
.
.It %s
.
Image size in bytes
.
.It %S
.
Human-readable image size
.Pq kB / MB
.
.It %t
.
Image format
.
.It %u
.
Number of current file
.
.It %w
.
Image width
.
.It %v
.
.Nm
version
.
.It \&%V
.
Process ID
.
.It %z
.
current image zoom
.
.It %%
.
A literal %
.
.El
.
.
.Sh CONFIGURATION
.
.Nm
has three config files:
.Pa themes
for theme definitions,
.Pa keys
for key bindings and
.Pa buttons
for mouse button bindings.
It will try to read them from
.Pa $XDG_CONFIG_HOME/feh/ ,
which
.Pq when XDG_CONFIG_HOME is unset
defaults to
.Pa ~/.config/feh/ .
If the files are not found in that directory, it will also try
.Pa /etc/feh/ .
.Pp
All config files treat lines starting with a
.Qq #
character as comments.
Note that mid-line comments are not supported.
.
.
.Sh THEMES CONFIG SYNTAX
.
.Pa .config/feh/themes
allows the naming of option groups, called themes.
.
.Pp
.
It takes entries of the form
.Qq Ar theme options ... ,
where
.Ar theme
is the name of the entry and
.Ar options
are the options which will be applied when the theme is used.
.
Note that the options are not parsed by any shell. Therefore, filename expansion
.Po
.Qq *.jpg
and similar
.Pc
is not supported. Quoting with both single and double quotes works, though.
.
.Pp
.
An example entry would be
.Qq imagemap -rVq --thumb-width 40 --thumb-height 30 --index-info \&'%n\en\&%wx\&%h\&' .
.
.Pp
.
You can use this theme in two ways.  Either call
.Qo
.Nm
-Timagemap *.jpg
.Qc ,
or create a symbolic link to
.Nm
with the name of the theme you want it to use.  For the example above,
this would be
.Qo
ln -s `which
.Nm
` ~/bin/imagemap
.Qc .
Now just run
.Qq imagemap *.jpg
to use these options.
.
.Pp
.
Note that you can split a theme over several lines by placing a backslash at
the end of an unfinished line.
.
.Pp
.
Command line options always override theme options.
.
.
.Sh KEYS CONFIG SYNTAX
.
.Pa .config/feh/keys
defines key bindings.
It has entries of the form
.Qq Ar action Op Ar key1 Op Ar key2 Op Ar key3 .
.
.Pp
.
Each
.Ar key
is an X11 keysym name as shown by
.Xr xev 1 ,
like
.Qq Delete .
It may optionally start with modifiers for things like Control, in which case
.Ar key
looks like
.Ar mod Ns No - Ns Ar keysym
.Po
for example
.Qq C-Delete
for Ctrl+Delete or
.Qq C-1-Delete
for Ctrl+Alt+Delete
.Pc
.
.Pp
.
Available modifiers are
.Ar C No for Control ,
.Ar S No for Shift and
.Ar 1 , 4 No for Mod1 and Mod4 .
To match an uppercase letter like
.Qq S
instead of
.Qq s ,
the Shift modifier is not required.
.
.Pp
.
Specifying an
.Ar action
without any keys unbinds it (i.e. the default bindings are removed).
.
.Pp
.
.Em Note :
Do not use the same keybinding for multiple actions. When binding an action
to a new key
.Pq or mouse button ,
make sure to unbind it from its previous action, if present.
.Nm
does not check for conflicting bindings, so their behaviour is undefined.
.
.Pp
.
For a list of the
.Ar action
names, see
.Sx KEYS .
.
.
.Sh KEYS
.
In an image window, the following keys may be used
.Pq The strings in Bo square brackets Bc are the config action names :
.
.Bl -tag -width indent
.
.It a Bq toggle_actions
.
Toggle actions display
.Pq see Cm --draw-actions
.
.It A Bq toggle_aliasing
.
Enable/Disable anti-aliasing
.
.It c Bq toggle_caption
.
Caption entry mode.  If
.Cm --caption-path
has been specified, then this enables caption editing.  The caption at the
bottom of the screen will turn yellow and can be edited.  Hit return to confirm
and save the caption, or escape to cancel editing.  Note that you can insert
an actual newline into the caption using
.Aq CTRL+return .
.
.It d Bq toggle_filenames
.
Toggle filename display
.Pq see Cm --draw-filename
.
.It e Bq toggle_exif
.
.Pq only if compiled with exif=1
Toggle EXIF tag display
.
.It f Bq save_filelist
.
Save the current filelist as
.Qq feh_PID_ID_filelist
.
.It h Bq toggle_pause
.
Pause/Continue the slideshow.  When it is paused, it will not automatically
change slides based on
.Cm --slideshow-delay .
.
.It i Bq toggle_info
.
Toggle info display
.Pq see Cm --info
.
.It k Bq toggle_keep_vp
.
Toggle zoom and viewport keeping. When enabled,
.Nm
will keep zoom and X, Y offset when switching images.
.
.It m Bq toggle_menu
.
Show menu.  Use the arrow keys and return to select items,
.Aq escape
to close the menu.
.
.It n , Ao Space Ac , Ao Right Ac Bq next_img
.
Show next image. Selects the next image in thumbnail mode.
.
.It o Bq toggle_pointer
.
Toggle pointer visibility
.
.It p , Ao Backspace Ac , Ao Left Ac Bq prev_img
.
Show previous image. Selects the previous image in thumbnail mode.
.
.It q , Ao Escape Ac Bq quit
.
Quit
.Nm
.
.It r Bq reload_image
.
Reload current image.  Useful for webcams
.
.It s Bq save_image
.
Save the current image as
.Qq feh_PID_ID_FILENAME
.
.It v Bq toggle_fullscreen
.
Toggle fullscreen
.
.It w Bq size_to_image
.
Change window size to fit current image size
.Pq plus/minus zoom, if set .
In scale-down and fixed-geometry mode, this also updates the window size
limits.
.
.It x Bq close
.
Close current window
.
.It z Bq jump_random
.
Jump to a random position in the current filelist
.
.It \&[, \&] Bq prev_dir, next_dir
.
Jump to the first image of the previous or next sequence of images sharing
a directory name in the current filelist.  Use --sort dirname if you would
like to ensure that all images in a directory are grouped together.
.
.It < , > Bq orient_3 , orient_1
.
In place editing - rotate the image 90 degrees (counter)clockwise.
The rotation is lossless, but may create artifacts in some image corners when
used with JPEG images.  Rotating in the reverse direction will make them go
away.  See
.Xr jpegtran 1
for more about lossless JPEG rotation.
.
.Em Note:
.Nm
assumes that this feature is used to normalize image orientation. For JPEG
images, it will unconditionally set the EXIF orientation tag to 1
.Pq Qq 0,0 is top left
after every rotation. See
.Xr jpegexiforient 1
for details on how to change this flag.
.
.It _ Bq flip
.
In place editing - vertical flip
.
.It | Bq mirror
.
In place editing - horizontal flip
.
.It 0 .. 9 Bq action_0 .. action_9
.
Execute the corresponding action
.Pq 0 = Cm --action , No 1 = Cm --action1 No etc.
.
.It Ao Return Ac Bq action_0
.
Run the command defined by
.Cm --action
.
.It Ao home Ac Bq jump_first
.
Show first image
.
.It Ao end Ac Bq jump_last
.
Show last image
.
.It Ao page up Ac Bq jump_fwd
.
Go forward ~5% of the filelist
.
.It Ao page down Ac Bq jump_back
.
Go backward ~5% of the filelist
.
.It + Bq reload_plus
.
Increase reload delay by 1 second
.
.It - Bq reload_minus
.
Decrease reload delay by 1 second
.
.It Ao delete Ac Bq remove
.
Remove current file from filelist
.
.It Ao CTRL+delete Ac Bq delete
.
Remove current file from filelist and delete it
.
.It Ao keypad left Ac , Ao Ctrl+Left Ac Bq scroll_left
.
Scroll to the left
.
.It Ao keypad right Ac , Ao Ctrl+Right Ac Bq scroll_right
.
Scroll to the right
.
.It Ao keypad up Ac , Ao Ctrl+Up Ac Bq scroll_up
.
Scroll up
.
.It Ao keypad down Ac , Ao Ctrl+Down Ac Bq scroll_down
.
Scroll down.
Note that the scroll keys work without anti-aliasing for performance reasons,
hit the render key after scrolling to antialias the image.
.
.It Aq Alt+Left Bq scroll_left_page
.
Scroll to the left by one page
.
.It Aq Alt+Right Bq scroll_right_page
.
Scroll to the right by one page
.
.It Aq Alt+Up Bq scroll_up_page
.
Scroll up by one page
.
.It Aq Alt+Down Bq scroll_down_page
.
Scroll down by one page
.
.It R, Ao keypad begin Ac Bq render
.
Antialias the image.
Opens the currently selected image in thumbnail mode.
.
.It Ao keypad + Ac , Ao Up Ac Bq zoom_in
.
Zoom in
.
.It Ao keypad - Ac , Ao Down Ac Bq zoom_out
.
Zoom out
.
.It *, Ao keypad * Ac Bq zoom_default
.
Zoom to 100%
.
.It /, Ao keypad / Ac Bq zoom_fit
.
Zoom to fit the window size
.
.It ! Bq zoom_fill
.
Zoom to fill the window size like
.Cm --bg-fill
.
.El
.
.Ss MENU KEYS
.
The following keys bindings are used for the
.Nm
menu:
.
.Bl -tag -width indent
.
.It Ao Escape Ac Bq menu_close
.
Close the menu
.
.It Ao Up Ac Bq menu_up
.
Highlight previous menu item
.
.It Ao Down Ac Bq menu_down
.
Highlight next menu item
.
.It Ao Left Ac Bq menu_parent
.
Highlight parent menu item
.
.It Ao Right Ac Bq menu_child
.
Highlight child menu item
.
.It Ao Return Ac , Ao Space Ac Bq menu_select
.
Select highlighted menu item
.
.El
.
.
.Sh BUTTONS CONFIG SYNTAX
.
.Pa .config/feh/buttons .
This works like the keys config file: the entries are of the form
.Qq Ar action Op Ar binding .
.
.Pp
.
Each
.Ar binding
is a button number.  It may optionally start with modifiers for things like
Control, in which case
.Ar binding
looks like
.Ar mod Ns No - Ns Ar button
.Pq for example "C-1" for Ctrl + Left button .
.
.Pp
.
.Em Note :
Do not use the same button for multiple actions.
.Nm
does not check for conflicting bindings, so their behaviour is undefined.
.
Either unbind the unwanted action, or bind it to another unused button.
.
The order in which you bind / unbind does not matter, though.
.
.Pp
.
For the available modifiers, see
.Sx KEYS CONFIGURATION SYNTAX .
.
.
.Ss BUTTONS
.
In an image window, the following buttons may be used
.Pq The strings in Bo square brackets Bc are the config action names .
Additionally, all actions specified in the
.Sx KEYS
section can also be bound to a button.
.
.Bl -tag -width indent
.
.It unbound Bq reload
.
Reload current image
.
.It 1 Ao left mouse button Ac Bq pan
.
pan the current image
.
.It 2 Ao middle mouse button Ac Bq zoom
.
Zoom the current image
.
.It 3 Ao right mouse button Ac Bq toggle_menu
.
Toggle menu
.
.It 4 Ao mousewheel down Ac Bq prev_img
.
Show previous image
.
.It 5 Ao mousewheel up Ac Bq next_img
.
Show next image
.
.It Ctrl+1 Bq blur
.
Blur current image
.
.It Ctrl+2 Bq rotate
.
Rotate current image
.
.It unbound Bq zoom_in
.
Zoom in
.
.It unbound Bq zoom_out
.
Zoom out
.
.
.El
.
.
.Sh MOUSE ACTIONS
.
Default Bindings:
When viewing an image, mouse button 1 pans the image
.Pq moves it around
or, when only clicked, moves to the next image
.Pq slideshow mode only .
Quick drags with less than 2px of movement per axis will be treated as clicks
to aid graphics tablet users.
.
Mouse button 2 zooms
.Po click and drag left->right to zoom in, right->left to zoom out, click once
to restore zoom to 100%
.Pc
and mouse button 3 opens the menu.
.
.Pp
.
CTRL+Button 1 blurs or sharpens the image
.Pq drag left to blur, right to sharpen ;
CTRL+Button 2 rotates the image around the center point.
.
.Pp
.
A note about pan and zoom modes:
In pan mode, if you reach a window border but haven't yet panned to the end of
the image,
.Nm
will warp your cursor to the opposite border so you can continue panning.
.
.Pp
.
When clicking the zoom button and immediately releasing it, the image will be
back at 100% zoom.  When clicking it and moving the mouse while holding the
button down, the zoom will be continued at the previous zoom level.  The zoom
will always happen so that the pixel on which you entered the zoom mode
remains stationary.  So, to enlarge a specific part of an image, click the
zoom button on that part.
.
.
.Sh SIGNALS
.
In slideshow mode,
.Nm
handles the following signals:
.
.Bl -tag -width indent
.
.It Dv SIGUSR1
.
Switch to next image
.
.It Dv SIGUSR2
.
Switch to previous image
.
.El
.
.
.Sh USAGE EXAMPLES
.
Here are some examples of useful option combinations. See also:
.Aq http://feh.finalrewind.org/examples/
.
.Bl -tag -width indent
.
.It feh /opt/images
.
Show all images in /opt/images
.
.It feh -r /opt/images
.
Recursively show all images found in /opt/images and subdirectories
.
.It feh -rSfilename /opt/images
.
Same as above, but sort by filename. By default, feh will show files in the
order it finds them on the hard disk, which is usually somewhat random.
.
.It feh -t -Sfilename -E 128 -y 128 -W 1024 /opt/images
.
Show 128x128 pixel thumbnails, limit window width to 1024 pixels.
.
.It feh -t -Sfilename -E 128 -y 128 -W 1024 -P -C /usr/share/fonts/truetype/ttf-dejavu/ -e DejaVuSans/8 /opt/images
.
Same as above, but enable thumbnail caching in ~/.thumbnails and use a smaller
font.
.
.It feh -irFarial/14 -O index.jpg /opt/images
.
Make an index print of /opt/images and all directories below it, using 14 point
Arial to write the image info under each thumbnail.  Save the image as
index.jpg and don't display it, just exit.  Note that this even works without
a running X server
.
.It feh --unloadable -r /opt/images
.
Print all unloadable images in /opt/images, recursively
.
.It feh -f by_width -S width --reverse --list \&.
.
Write a list of all images in the directory to by_width, sorted by width
.Pq widest images first
.
.It feh -w /opt/images/holidays
.
Open each image in /opt/images/holidays in its own window
.
.It feh -FD5 -Sname /opt/images/presentation
.
Show the images in .../presentation, sorted by name, in fullscreen,
automatically change to the next image after 5 seconds
.
.It feh -rSwidth -A Qo mv %F ~/images/\&%N Qc /opt/images
.
View all images in /opt/images and below, sorted by width, move an image to
~/image/image_name when enter is pressed
.
.It feh --start-at ./foo.jpg \&.
.
View all images in the current directory, starting with foo.jpg.  All other
images are still in the slideshow and can be viewed normally
.
.It feh --start-at foo.jpg *
.
Same as above
.
.It feh --info \&"exifgrep '\&(Model\&|DateTimeOriginal\&|FNumber\&|ISO\&|Flash\&)' %F \&| cut -d \&. -f 4-\&" \&.
.
Show some EXIF information, extracted by exifprobe/exifgrep
.
.It feh --action 'rm %F' -rl --max-dim 1000x800
.
Recursively remove all images with dimensions below or equal to 1000x800 pixels
from the current directory.
.
.El
.
.
.Sh DEPENDENCIES
.
.Nm
requires the
.Cm jpegtran
and
.Cm jpegexiforient
binaries
.Pq usually distributed in Qo libjpeg-progs Qc or similar
for lossless rotation.
.
.Pp
.
To view images from URLs such as http://, you need
.Nm
compiled with libcurl support (enabled by default).  See the
.Sx VERSION
section.
.
.
.Sh BUGS
.
.Pp
.
On systems with Imlib2 >= 1.4.7 and giflib >= 5.1.2,
.Nm
may be unable to load gif images. For affected mips, mipsel and arm devices,
gif support is completely broken, while on x86 / x86_64 gifs can usually
only be loaded if they are the first image in the filelist.
This appears to be an Imlib2 and/or giflib bug introduced in giflib 5.1.2.
See
.Aq https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=813729
for details. Workaround: Use
.Cm --magick-timeout 5
.Pq or some other positive value
to load gifs with imagemagick instead, or downgrade giflib to 5.1.1.
.
.Pp
.
Thumbnail mode is somewhat inefficient, and because of that not nearly as fast
as it could be.
.
.Pp
.
.Cm --scale-down
does not take window decorations into account and may therefore make the
window slightly too large.
.
.
.Ss REPORTING BUGS
.
If you find a bug, please report it to
.Aq derf+feh@finalrewind.org
or via
.Aq http://github.com/derf/feh/issues .
You are also welcome to direct any feh-related comments/questions/... to #feh
on irc.oftc.net.
.
.Pp
.
Please include the feh version
.Aq the output of Qq feh --version ,
steps to reproduce the bug and, if necessary, images to reproduce it.
.
.
.Sh FUTURE PLANS
.
Plans for the following releases:
.
.Bl -bullet -compact
.
.It
Make zoom options more intuitive
.
.El
.
.
.Sh LICENSE
.
Copyright (C) 1999, 2000 by Paul Duncan.
Copyright (C) 1999, 2000 by Tom Gilbert (and various contributors).
Copyright (C) 2010-2016 by Daniel Friesel (and even more contributors).
.
.Pp
.
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to
deal in the Software without restriction, including without limitation the
rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
sell copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
.
.Pp
.
The above copyright notice and this permission notice shall be included in
all copies of the Software and its documentation and acknowledgment shall be
given in the documentation and software packages that this Software was
used.
.
.Pp
.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
.
.Pp
.
Current developer: Daniel Friesel
.Aq derf@finalrewind.org
.
.Pp
.
Original author
.Pq no longer developing :
Tom Gilbert
.Aq feh_sucks@linuxbrit.co.uk
.
.Pp
.
See also:
http://feh.finalrewind.org