FEH

Section: User Commands (1)
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NAME

feh - image viewer and cataloguer

SYNOPSIS

[options ] [-- ] [files | directories | URLs ... ]

VERSION

This manual documents 3.6.3

Compile-time switches in this build:

libcurl remote file support enabled
Xinerama multi-monitor support enabled
libexif builtin EXIF reader available
inotify-based auto-reload of changed files disabled

DESCRIPTION

is a light-weight, configurable and versatile image viewer. It is aimed at command line users, but can also be started from graphical file managers. Apart from viewing images, it can compile text and thumbnail listings, show (un)loadable files, set X11 backgrounds, and more.

Features include filelists, various image sorting modes, custom action scripts, and image captions. can be controlled by configurable keyboard and mouse shortcuts, terminal input and signals. When no file arguments or filelists are specified and --start-at is not used, displays all files in the current directory.

EXIF tags are supported either using exiv2 / exifgrep via --info (see the Sx USAGE EXAMPLES section ) or as a builtin feature by compiling with exif=1. In this build of , builtin EXIF support is available.

MODES

is based on various modes, which are selected at startup by command line options.

Slideshow mode is the default. It opens a window and displays the first image in it; the slideshow position can be advanced (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 - .

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.

Index mode forms an index print from the filelist. Image thumbnails are shown along with the filename, size and dimensions, 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.

Thumbnail mode is like index mode, but the mini-images are clickable and open the selected image in a new window.

Multiwindow mode shows images in multiple windows, instead of as a slideshow in one window. Don't use with a large filelist ;)

List mode doesn't display images. Instead, it outputs an ls - 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.

can also list either all the loadable files in a filelist or all the unloadable files. This is useful for preening a directory.

SUPPORTED FORMATS

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 (supplied by ImageMagick) is available, it also has limited support for many other file types, such as svg, xcf and otf. If dcraw is available, also supports RAW files provided by cameras and will display the embedded thumbnails. Use --conversion-timeout timeout with a non-negative value to enable support for these formats.

As Imlib2 may take several seconds to determine whether it can load a file or not (e.g. when attempting to open a large video) checks each file's header before loading it. If it looks like an image, it is passed on to Imlib2, otherwise, it is assumed to be unloadable. This greatly improves performance when working in directories with mixed files (i.e., directories which do not exclusively contain image files) If you think that Imlib2 can load a file which has determined to be likely not an image, set the environment variable Qq FEH_SKIP_MAGIC to pass all files directly to Imlib2, bypassing the header check. The environment variable's value does not matter, it just needs to be set.

OPTIONS

-A , --action [flag [[ title ] 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.

If flag is Qq ; , will reload the current image instead of switching to the next one (slideshow mode) or closing the window (multiwindow mode) after executing the action. If [ title is specified (note the literal Qo [ Qc and Qo ] Qc , ) --draw-actions will display title instead of action in the action list. Note that 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.

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 %F ~/images/%N Qc * .

--action1 .. --action9 [flag [[ title ] action ] ]

Extra actions which can be set and triggered using the appropriate number key.

--auto-reload

(optional feature, disabled in this build) automatically reload image when the underlying file changes. Note that auto-reload (if enabled in the build) is on by default. This option is only useful to re-enable auto-reload after it has been disabled by a preceding --reload=0 option.

Automatic reload is not supported in montage, index, or thumbnail mode.

--auto-rotate

(optional feature, available in this build) Automatically rotate images based on EXIF data. Does not alter the image files.

-Z , --auto-zoom

Zoom pictures to screen size in fullscreen / fixed geometry mode.

-x , --borderless

Create borderless windows.

--cache-size size

Set imlib2 in-memory cache to size MiB. A higher cache size can significantly improve performance especially for small slide shows, however at the cost of increased memory consumption. size must be between 0 and 2048 MiB and defaults to 4.

-P , --cache-thumbnails

Enable thumbnail caching. Thumbnails are saved in $XDG_CACHE_HOME/thumbnails which defaults to ~/.cache/thumbnails Note that thumbnails are only cached if the configured thumbnail size does not exceed 256x256 pixels.

-K , --caption-path path

Path to directory containing image captions. This turns on caption viewing, and if captions are found in 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 .

--conversion-timeout timeout

can use ImageMagick to try converting unloadable files into a supported file format. As this can take a long time, it is disabled by default. Set timeout to a non-negative value to enable it. A positive value specifies after how many seconds conversion attempts should be aborted, zero causes to try indefinitely. Negative values restore the default by disabling conversion altogether.

--class class

Set the X11 class hint to class Default: feh

-L , --customlist format

Don't display images, print image info according to format instead. See Sx FORMAT SPECIFIERS .

-G , --draw-actions

Draw the defined actions and what they do at the top-left of the image.

--draw-exif

(optional feature, available in this build) display some EXIF information in the bottom left corner, similar to using --info with exiv2 / exifgrep.

-d , --draw-filename

Draw the file name at the top-left of the image.

--draw-tinted

Show overlay texts (as created by --draw-filename et al ) on a semi-transparent background to improve their readability.

--edit

Enable basic editing of files. This makes rotation and mirroring (bound to Qo < Qc , Qo > Qc , Qo | Qc , and Qo _ Qc by default ) change the underlying file and not just its displayed content.

-f , --filelist file

This option is similar to the playlists used by music software. If 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 file names, absolute or relative to the current directory, one file name per line.

If 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 (-Spixels for example ) for later viewing.

Any changes to the internal filelist (such as deleting a file or it being pruned for being unloadable) will be saved to file when exits. You can add files to filelists by specifying them on the command line when also specifying the list.

If file is Qq - , will read the filelist from its standard input.

-e , --font 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 .

-C , --fontpath path

Specify path as extra directory in which to search for fonts; can be used multiple times to add multiple paths.

--force-aliasing

Disable anti-aliasing for zooming, background setting etc.

-I , --fullindex

Same as index mode, but with additional information below the thumbnails. Works just like Qq feh --index --index-info %n\n%S\n%wx%h . Enables Sx MONTAGE MODE OPTIONS .

Note: This option needs to load all images to calculate the dimensions of the window, so when using it with many files it will take a while before a window is visible. Use --preload to get a progress bar.

-F , --fullscreen

Make the window fullscreen. Note that in this mode, large images will always be scaled down to fit the screen, and --zoom zoom only affects smaller images and never scales larger than necessary to fit the screen size. The only exception is a zoom of 100, in which case images will always be shown at 100% zoom.

When combined with --thumbnails this option only affects images opened from the thumbnail overview. The thumbnail list itself will still be windowed.

-g , --geometry width x height | + x + y | width x height + x + y

Use a fixed window size as specified in the X-style geometry string e.g. 640x480. An optional +x+y window offset can be specified. Combine with --scale-down to scale down larger images like in fullscreen mode. Note that this option does not enforce the window size; changing it by a tiling WM or manually is still possible. However, auto-resize remains disabled.

-Y , --hide-pointer

Hide the pointer (useful for slideshows)

-B , --image-bg style

Use style as background for transparent image parts and the like. Accepted values: default, checks, or an XColor (e.g. Qo black Qc or Qo #428bdd Qc ) Note that some shells treat the hash symbol as a special character, so you may need to quote or escape it for the XColor code to work. In windowed mode, the default is checks (a checkered background so transparent image parts are easy to see) In fullscreen and background setting mode, checks is not accepted and the default is black.

-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 AND THUMBNAIL MODE OPTIONS and Sx MONTAGE MODE OPTIONS .

--info [flag command_line ]

Execute command_line 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 flag is set to Qo ; Qc , the output will not be displayed by default, but has to be enabled by the toggle_info key.

--insecure

When viewing files with HTTPS, this option disables all certificate checks. It allows images on sites with self-signed or expired certificates to be opened, but is no more secure than plain HTTP.

-k , --keep-http

When viewing files using HTTP, normally deletes the local copies after viewing, or, if caching, on exit. This option permanently stores them on disk, either in the directory specified by --output-dir or in the current working directory.

--keep-zoom-vp

When switching images, keep zoom and viewport settings (zoom level and X, Y offsets)

-l , --list

Don't display images. Analyze them and display an ls(1)-Nostyle listing. Useful in scripts to hunt out images of a certain size/resolution/type etc.

-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.

--max-dimension width x height

Only show images with width <= width and height <= height If you only care about one parameter, set the other to 0 (or a negative value)

-M , --menu-font font

Use font (truetype, with size, like Qq yudit/12 ) as menu font.

--min-dimension width x height

Only show images with width >= width and height >= height If you only care about one parameter, set the other to 0.

-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 .

-w , --multiwindow

Disable slideshow mode. With this setting, instead of opening multiple files in slideshow mode, multiple windows will be opened; one per file.

--no-conversion-cache

When loading images via HTTP, ImageMagick or dcraw, will only load/convert them once and re-use the cached file on subsequent slideshow passes. This option disables the cache. It is also disabled when --reload is used. Use it if you rely on frequently changing files loaded via one of these sources. Note that it will impair performance.

--no-jump-on-resort

Don't jump to the first image after resorting the filelist.

-N , --no-menus

Don't load or show any menus.

--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.

--no-xinerama

(optional feature, enabled in this build) Disable Xinerama support.

--on-last-slide hold | quit | resume

Select behaviour when trying to select the next image on the last slide (or the previous image on the first slide) in a slide show.

With hold will stop advancing images in this case and continue displaying the first/last image, respectively. This is intended for linear slide shows. Behaviour is unspecified when using other navigation commands than previous and next image.

quit will cause to quit when trying to advance past the last image in the slide show.

resume is the default behaviour: On the last (first) image, will wrap around to the first (last) image.

-j , --output-dir directory

Save files to directory when using --keep-http or the save_image or save_filelist command. By default, files are saved in the current working directory.

-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.

-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.

-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).

-r , --recursive

Recursively expand any directories in the command line arguments to the content of those directories, all the way down to the bottom level.

--no-recursive

Don't recursively expand any directories. This is the default, but this option is useful to override themes containing --recursive

-R , --reload int

Reload filelist and current image after int seconds. Useful for viewing HTTP webcams or frequently changing directories. (Note that filelist reloading is still experimental.) Set to zero to disable any kind of automatic reloading.

If an image is removed, will either show the next one or quit. However, if an image still exists, but can no longer be loaded, will continue to try loading it.

Setting this option causes inotify-based auto-reload to be disabled. Reload is not supported in montage, index, or thumbnail mode.

-n , --reverse

Reverse the sort order. Use this to invert the order of the filelist. E.g. to sort in reverse width order, use -nSwidth

-. , --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 and thumbnail list mode.

In tiling environments, this also causes the image to be centered in the window.

--scroll-step count

Scroll 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 reverse the scroll direction. See Sx KEYS CONFIG SYNTAX for how to reverse it permanently. Default: 20

-D , --slideshow-delay float

For slideshow mode, wait float seconds between automatically changing slides. Useful for presentations. Specify a negative number to set the delay (which will then be float * (-1) ) but start in paused mode.

-S , --sort sort_type

Sort file list 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 is necessary, causing a delay proportional to the number of images in the list.

mtime starts with the most recently modified image. width , height , pixels and size start with the smallest. Use --reverse to sort by oldest or largest first.

For name , filename and dirname you can use --version-sort to sort numbers naturally, so that e.g. 10.jpg comes after 2.jpg.

-| , --start-at filename

Start the filelist at filename If no other files or filelists were specified on the command line, will first load all files from the directory in which filename resides. This way, it's possible to look at a specific image and use the next / prev keys to browse through the directory. See Sx USAGE EXAMPLES for examples. If filename is a remote URL and no files or filelists were specified, will show filename and not attempt to load additional files or directories.

Note: If you use relative paths in your filelist, filename should also be a relative path. If you use absolute paths, it should also be an absolute path. If cannot find an exact match, it will compare basenames (filenames without the directory suffix) This may lead to mismatches if several files in your filelist have the same basename.

-T , --theme theme

Load options from config file with name theme - see Sx THEMES CONFIG SYNTAX for more info. Note that command line options always override theme options. The theme can also be set via the program name (e.g. with symlinks) so by default will look for a Qq Nm theme.

-t , --thumbnails

Same as Index mode, but the thumbnails are clickable image launchers. Note that --fullscreen and --scale-down do not affect the thumbnail window. They do, however, work for image windows launched from thumbnail mode. Also supports Sx INDEX AND THUMBNAIL MODE OPTIONS as well as Sx MONTAGE MODE OPTIONS .

-~ , --thumb-title string

Set title for windows opened from thumbnail mode. See also Sx FORMAT SPECIFIERS .

-^ , --title title

Set window title. Applies to all windows except those opened from thumbnail mode. See Sx FORMAT SPECIFIERS .

-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.

-V , --verbose

output useful information, progress bars, etc.

-v , --version

output version information and exit.

--version-sort

When combined with --sort name , --sort filename or --sort dirname use natural sorting for file and directory names. In this mode, filenames are sorted as an ordinary human would expect, e.g. Qq 2.jpg comes before Qq 10.jpg . Note that this option only has an effect when a sort mode is set using --sort

--xinerama-index screen

(optional feature, enabled in this build) Override '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 assumes that it will be placed on screen B.

In background setting mode: When used with any option other than --bg-tile Only set wallpaper on 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.

--zoom percent | max | fill

Zoom images by percent when in full screen mode or when window geometry is fixed. When combined with --auto-zoom zooming will be limited to the specified percent Specifying max is like setting --auto-zoom using fill makes zoom the image like the --bg-fill mode.

MONTAGE MODE OPTIONS

These additional options can be used for index, montage and (partially) thumbnail mode.

-a , --alpha int: When drawing thumbnails onto the background, set their transparency level to int (0 - 255)
-b , --bg file | trans: Use file as background for your montage. With this option specified, the montage size will default to the size of file if no size restrictions were specified. Alternatively, if file is Qq trans , the background will be made transparent.
-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 --thumb-width and --thumb-height This will prevent any empty space in the final montage.
-H , --limit-height pixels: Limit the height of the montage.
-W , --limit-width pixels: Limit the width of the montage, defaults to 800 pixels.
If both --limit-width and --limit-height are specified, the montage will be exactly width x height pixels in dimensions.
-o , --output file: Save the created montage to file
-O , --output-only file: Just save the created montage to file without displaying it.
-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 --ignore-aspect is specified.
-E , --thumb-height pixels: Set thumbnail height.
-y , --thumb-width pixels: Set thumbnail width.

INDEX AND THUMBNAIL MODE OPTIONS

In addition to Sx MONTAGE MODE OPTIONS --alpha , --bg , --limit-height , --limit-width , --output , --output-only --thumb-height , --thumb-width the following options can be used.

--index-info format: Show image information based on format below thumbnails in index / thumbnail mode. See Sx FORMAT SPECIFIERS . May contain newlines. Use Qq --index-info '' to display thumbnails without any info text
Note: If you specify image-related formats (such as %w or %s) 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 window becomes visible. Use --preload to get a progress bar.
-@ , --title-font font: Set font to print a title on the index, if no font is specified, no title will be printed.
-J , --thumb-redraw n: Redraw thumbnail window every n images while generating thumbnails. Redrawing takes quite long, so the default is 10. Set n = 1 to update the thumbnail window immediately. With n = 0 there will only be one redraw once all thumbnails are loaded.

BACKGROUND SETTING

In many desktop environments, can also be used as a background setter. Unless you pass the --no-fehbg option, it will write a script to set the current background to ~/.fehbg So to have your background restored every time you start X, you can add Qq ~/.fehbg & to your X startup script (such as ~/.xinitrc ) Note that the commandline written to ~/.fehbg always includes the --no-fehbg option to ensure that it is not inadvertently changed by differences in X11 screen layout or similar.

Note that does not support setting the wallpaper of GNOME shell desktops. In this environment, you can use Qq gsettings set org.gnome.desktop.background picture-uri file:/// Ns Ar path instead.

For --bg-center , --bg-fill and --bg-max you can use --geometry 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.

Note that all options except --bg-tile support Xinerama. For instance, if you have multiple screens connected and use e.g. --bg-center 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.

Use --no-xinerama to treat the whole X display as one screen when setting wallpapers. You may also use --xinerama-index to use as a background setter for a specific screen.

--bg-center: Center the file on the background. If it is too small, it will be surrounded by a border as specified by --image-bg
--bg-fill: Like --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
--bg-max: Like --bg-fill but scale the image to the maximum size that fits the screen with borders on one side. The border color can be set using --image-bg
--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
--bg-tile: Tile (repeat) the image in case it is too small for the screen
--no-fehbg: Do not write a ~/.fehbg file

FORMAT SPECIFIERS

%a: Information about slideshow state (playing/paused)
%f: Image path/filename
%F: Escaped image path/filename (for use in shell commands)
%g: w,h window dimensions in pixels (mnemonic: geometry)
%h: Image height
%l: Total number of files in filelist
%L: Temporary copy of filelist. Multiple uses of %L within the same format string will return the same copy.
%m: Current mode
%n: Image name
%N: Escaped image name
%o: x,y offset of top-left image corner to window corner in pixels
%p: Number of image pixels
%P: Number of image pixels in human-readable format with k/M (kilopixels / megapixels) suffix
%r: Image rotation. A half right turn equals pi.
%s: Image size in bytes
%S: Human-readable image size (kB / MB)
%t: Image format
%u: Number of current file
%w: Image width
%v: version
%V: Process ID
%z: Current image zoom, rounded to two decimal places
%Z: Current image zoom, higher precision
%%: A literal %

CONFIGURATION

has three config files: themes for theme definitions, keys for key bindings and buttons for mouse button bindings. It will try to read them from $XDG_CONFIG_HOME/feh/ which (when XDG_CONFIG_HOME is unset) defaults to ~/.config/feh/ If the files are not found in that directory, it will also try /etc/feh/

All config files treat lines starting with a Qq # character as comments. Comments at the end of a line are not supported.

THEMES CONFIG SYNTAX

.config/feh/themes allows the naming of option groups, called themes.

It takes entries of the form Qq Ar theme options ... , where theme is the name of the entry and options are the options which will be applied when the theme is used.

Note that the option parser does not behave like a normal shell: filename expansion and backslash escape sequences are not supported and passed to feh's option parser as-is. However, quoting of arguments is respected and can be used for arguments with whitespace. So, the sequence Qq --info Qq foo bar works as intended (that is, it display the string Qq foo bar ) whereas the option string Qq --info foo\ bar will only display Qq foo\ and complain about the file bar not existing. Please keep this in mind when writing theme files.

An example entry is Qq imagemap -rVq --thumb-width 40 --thumb-height 30 --index-info '%n\n%wx%h' .

You can use this theme in two ways. Either call Qo -Timagemap *.jpg Qc , or create a symbolic link to with the name of the theme you want it to use. For the example above, this would be Qo ln -s `which ` ~/bin/imagemap Qc . Now just run Qq imagemap *.jpg to use these options.

Note that you can split a theme over several lines by placing a backslash at the end of an unfinished line. A single option-argument-pair must not span multiple lines. A single line must not be longer than 1023 characters, but there's no upper limit for the length of a theme.

Command line options always override theme options.

KEYS CONFIG SYNTAX

.config/feh/keys defines key bindings. It has entries of the form Qq Ar action Op Ar key1 Op Ar key2 Op Ar key3 .

Each key is an X11 keysym name as shown by xev(1), like Qq Delete . It may optionally start with modifiers for things like Control, in which case key looks like mod - keysym Po for example Qq C-Delete for Ctrl+Delete or Qq C-1-Delete for Ctrl+Alt+Delete Pc

Available modifiers are C for Control S for Shift and 1 , 4 for Mod1 and Mod4 To match an uppercase letter like Qq S instead of Qq s , the Shift modifier is not required.

Specifying an action without any keys unbinds it (i.e. the default bindings are removed).

Note: Do not use the same keybinding for multiple actions. When binding an action to a new key (or mouse button) make sure to unbind it from its previous action, if present. does not check for conflicting bindings, so their behaviour is undefined.

For a list of the action names, see Sx KEYS . Note that not all of the key names used there correspond to X11 keysyms. Most notably, page up (Prior / Page_Up , ) page down (Next / Page_Down) and the keypad keys (KP_*) do not.

KEYS

The following actions and default key bindings can be used in an image window. (The strings in Bo square brackets Bc are the config action names ) If is running inside a terminal and its standard input is not used for images or filelists, key input from the terminal is also accepted. However, terminal input support is currently limited to most alphanumeric characters (0-9 a-z A-Z and some more) arrow keys, return and backspace. The Alt (Mod1) modifier is also supported.

a Bq toggle_actions: Toggle actions display (see --draw-actions )
A Bq toggle_aliasing: Enable/Disable anti-aliasing
c Bq toggle_caption: Caption entry mode. If --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 .
d Bq toggle_filenames: Toggle filename display (see --draw-filename )
e Bq toggle_exif: (optional feature, available in this build) Toggle EXIF tag display
f Bq toggle_fullscreen: Toggle fullscreen
g Bq toggle_fixed_geometry: Enable/Disable automatic window resize when changing images.
h Bq toggle_pause: Pause/Continue the slideshow. When it is paused, it will not automatically change slides based on --slideshow-delay
i Bq toggle_info: Toggle info display (see --info )
k Bq toggle_keep_vp: Toggle zoom and viewport keeping. When enabled, will keep zoom and X, Y offset when switching images.
L Bq save_filelist: Save the current filelist as Qq feh_PID_ID_filelist . It is saved in the directory specified by --output-dir if set, and in the current working directory otherwise.
m Bq toggle_menu: Show menu. Use the arrow keys and return to select items, and Aq escape to close the menu.
n , Ao space Ac , Ao Right Ac Bq next_img: Show next image. Selects the next image in thumbnail mode.
o Bq toggle_pointer: Toggle pointer visibility
p , Ao BackSpace Ac , Ao Left Ac Bq prev_img: Show previous image. Selects the previous image in thumbnail mode.
q , Ao Escape Ac Bq quit: Quit
r Bq reload_image: Reload current image. Useful for webcams
s Bq save_image: Save the current image as Qq feh_PID_ID_FILENAME . It is saved in the directory specified by --output-dir if set, and in the current working directory otherwise.
w Bq size_to_image: Change window size to fit current image size (plus/minus zoom, if set) In scale-down and fixed-geometry mode, this also updates the window size limits.
x Bq close: Close current window
z Bq jump_random: Jump to a random position in the current filelist
Z Bq toggle_auto_zoom: Toggle auto-zoom.
[, ] 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.
< , > Bq orient_3 , orient_1: rotate the image 90 degrees (counter)clockwise.
When --edit is used, this also rotates the image in the underlying file. 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 jpegtran(1) for more about lossless JPEG rotation. Note: assumes that this feature is used to normalize image orientation. For JPEG images, it will unconditionally set the EXIF orientation tag to 1 (Qq 0,0 is top left ) after every rotation. See jpegexiforient(1) for details on how to change this flag.
_ Bq flip: Vertically flip image. When --edit is used, this also flips the image in the underlying file (see above)
| Bq mirror: Horizontally flip image. When --edit is used, this also flips the image in the underlying file (see above)
0 .. 9 Bq action_0 .. action_9: Execute the corresponding action (0 = --action , 1 = --action1 etc. )
Ao Return Ac Bq action_0: Run the command defined by --action
Ao Home Ac Bq jump_first: Show first image
Ao End Ac Bq jump_last: Show last image
Ao page up Ac Bq jump_fwd: Go forward ~5% of the filelist
Ao page down Ac Bq jump_back: Go backward ~5% of the filelist
+ Bq reload_plus: Increase reload delay by 1 second
- Bq reload_minus: Decrease reload delay by 1 second
Ao Delete Ac Bq remove: Remove current file from filelist
Ao Ctrl+Delete Ac Bq delete: Remove current file from filelist and delete it
Ao keypad Left Ac , Ao Ctrl+Left Ac Bq scroll_left: Scroll to the left
Ao keypad Right Ac , Ao Ctrl+Right Ac Bq scroll_right: Scroll to the right
Ao keypad up Ac , Ao Ctrl+Up Ac Bq scroll_up: Scroll up
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 anti-alias the image.
Aq Alt+Left Bq scroll_left_page: Scroll to the left by one page
Aq Alt+Right Bq scroll_right_page: Scroll to the right by one page
Aq Alt+Up Bq scroll_up_page: Scroll up by one page
Aq Alt+Down Bq scroll_down_page: Scroll down by one page
R, Ao keypad begin Ac Bq render: Anti-alias the image. Opens the currently selected image in thumbnail mode.
Ao keypad + Ac , Ao Up Ac Bq zoom_in: Zoom in
Ao keypad - Ac , Ao Down Ac Bq zoom_out: Zoom out
*, Ao keypad * Ac Bq zoom_default: Zoom to 100%
/, Ao keypad / Ac Bq zoom_fit: Zoom to fit the window size
! Bq zoom_fill: Zoom to fill the window size like --bg-fill

MENU KEYS

The following keys bindings are used for the menu:

Ao Escape Ac Bq menu_close: Close the menu
Ao Up Ac Bq menu_up: Highlight previous menu item
Ao Down Ac Bq menu_down: Highlight next menu item
Ao Left Ac Bq menu_parent: Highlight parent menu item
Ao Right Ac Bq menu_child: Highlight child menu item
Ao Return Ac , Ao space Ac Bq menu_select: Select highlighted menu item

BUTTONS CONFIG SYNTAX

.config/feh/buttons This works like the keys config file: the entries are of the form Qq Ar action Op Ar binding .

Each binding is a button number. It may optionally start with modifiers for things like Control, in which case binding looks like mod - button (for example C-1 for Ctrl + Left button)

Note: Do not use the same button for multiple actions. 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.

For the available modifiers, see Sx KEYS CONFIGURATION SYNTAX .

BUTTONS

In an image window, the following buttons may be used (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.

unbound Bq reload: Reload current image
1 Ao left mouse button Ac Bq pan: pan the current image
2 Ao middle mouse button Ac Bq zoom: Zoom the current image
3 Ao right mouse button Ac Bq toggle_menu: Toggle menu
4 Ao mousewheel down Ac Bq prev_img: Show previous image
5 Ao mousewheel up Ac Bq next_img: Show next image
Ctrl+1 Bq blur: Blur current image
Ctrl+2 Bq rotate: Rotate current image
unbound Bq zoom_in: Zoom in
unbound Bq zoom_out: Zoom out

MOUSE ACTIONS

Default Bindings: When viewing an image, mouse button 1 pans the image (moves it around) or, when only clicked, moves to the next image (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.

Ctrl+Button 1 blurs or sharpens the image (drag left to blur, right to sharpen) Ctrl+Button 2 rotates the image around the center point.

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, will warp your cursor to the opposite border so you can continue panning.

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.

SIGNALS

In slideshow and multiwindow mode, handles the following signals:

SIGUSR1: Slideshow mode: switch to next image; reload current image if the slideshow consists of a single file. Multiwindow mode: reload all images.
SIGUSR2: Slideshow mode: switch to previous image; reload current image if the slideshow consists of a single file. Multiwindow mode: reload all images.

USAGE EXAMPLES

Here are some examples of useful option combinations. See also: Aq https://feh.finalrewind.org/examples/

feh ~/Pictures: Show all images in ~/Pictures
feh -r ~/Pictures: Recursively show all images found in ~/Pictures and subdirectories
feh -rSfilename --version-sort ~/Pictures: Same as above, but sort naturally. By default, feh will show files in the string order of their names, meaning e.g. Qq foo 10.jpg will come before Qq foo 2.jpg . In this case, they are instead ordered as a human would expect.
feh -t -Sfilename -E 128 -y 128 -W 1024 ~/Pictures: Show 128x128 pixel thumbnails, limit window width to 1024 pixels.
feh -t -Sfilename -E 128 -y 128 -W 1024 -P -C /usr/share/fonts/truetype/ttf-dejavu/ -e DejaVuSans/8 ~/Pictures: Same as above, but enable thumbnail caching and use a smaller font.
feh -irFarial/14 -O index.jpg ~/Pictures: Make an index print of ~/Pictures 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
feh --unloadable -r ~/Pictures: Print all unloadable images in ~/Pictures, recursively
feh -f by_width -S width --reverse --list .: Write a list of all images in the directory to by_width, sorted by width (widest images first)
feh -w ~/Pictures/holidays: Open each image in ~/Pictures/holidays in its own window
feh -FD5 -Sname ~/Pictures/presentation: Show the images in .../presentation, sorted by name, in fullscreen, automatically change to the next image after 5 seconds
feh -rSwidth -A Qo mv %F ~/images/%N Qc ~/Pictures: View all images in ~/Pictures and below, sorted by width, move an image to ~/image/image_name when enter is pressed
feh --start-at ~/Pictures/foo.jpg: View all images in ~/Pictures, starting with foo.jpg. All other images are still in the slideshow and can be viewed normally
feh --start-at ~/Pictures/foo.jpg ~/Pictures: Same as above.
feh --info "exifgrep '(Model|DateTimeOriginal|FNumber|ISO|Flash)' %F | cut -d . -f 4-" .: Show some EXIF information, extracted by exifprobe/exifgrep
feh --action 'rm %F' -rl --max-dimension 1000x800: Recursively remove all images with dimensions below or equal to 1000x800 pixels from the current directory.
feh -L '%w %h %f' | awk '{ if ($1 > $2) { print $0 } }' | cut -d ' ' -f 3- | feh -f: Show landscape pictures (image width greater than height) in the current directory.

DEPENDENCIES

When --edit is used, needs the jpegtran and jpegexiforient binaries (usually distributed in Qo libjpeg-progs Qc or similar ) for lossless JPEG rotation.

To view images from URLs such as "http://", must be compiled with libcurl support. It is enabled in this build

KNOWN BUGS

On systems with giflib 5.1.2, 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 a bug in giflib, see Aq https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=813729 for details. Workaround: Use --conversion-timeout 5 (or some other positive value) to load gifs with imagemagick instead, or downgrade to giflib 5.1.1, or upgrade to giflib 5.1.4.

While loading images using libcurl, will not react to key or mouse actions.

Thumbnail mode is somewhat inefficient, and because of that not nearly as fast as it could be.

--scale-down does not take window decorations into account and may therefore make the window slightly too large.

REPORTING BUGS

If you find a bug, please report it to Aq derf+feh@finalrewind.org or via Aq https://github.com/derf/feh/issues . You are also welcome to direct any feh-related comments/questions/... to #feh on irc.oftc.net.

Please include the feh version Aq the output of Qq feh --version , steps to reproduce the bug and, if necessary, images to reproduce it.

LICENSE

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:

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.

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.

Current developer: Daniel Friesel Aq derf@finalrewind.org

Original author (no longer developing) Tom Gilbert Aq feh_sucks@linuxbrit.co.uk

Website: https://feh.finalrewind.org