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Logo options

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Carter Li edited this page May 3, 2024 · 15 revisions

General

Option Default Description
--logo, -l "" The logo source, interpreted depending on type
--logo-type auto The logo type. See the following categories for possible values
--<type> "" Short for --logo-type <type> --logo <value>
--logo-padding "" Sets the padding left and right of the logo
--logo-padding-left 0 Sets the padding left of the logo
--logo-padding-right 4 Sets the padding right of the logo
--logo-padding-top 0 Sets the padding top of the logo

All filesytem paths can be:

  • Absolute
  • Relative to the current working directory
  • Relative to any of the directories listed by fastfetch --list-data-paths + /logos
    For example, the file ~/.local/share/fastfetch/logos/shrek can simply be referenced as shrek.

Note: when using environment variables in config file:

  1. On Windows, only %ENV_VAR% syntax is supported, for example %USERPROFILE%/path/to/logo file.txt. See ExpandEnvironmentStringsA for detail.
  2. On *nix, all special charactors ( |&;<>(){}) must be quoted with \, for example ~/path/to/logo\ file.txt or $HOME/path/to/logo\ file.txt. See wordexp for detail.
    • Command substitution is allowed. For example, it's possible to use "source": "$(ls ~/path/to/images/*.png | shuf -n 1)" to randomly choose an image to display

Text

Option Default Description
--logo-color-[1-9] "" Overrides a color for logos that support it
--logo-print-remaining true Print the remaining logo, if it is higher than the keys
  • Color placeholders are in the form $[1-9]. To print a $, use $$.
  • If a color placeholder value is not set, the placeholder is simply discarded.

Image

Option Default Description
--logo-width "" Sets the width of the logo for logos that support it
--logo-height "" Sets the height of the logo for logos that support it
  • If one of the height / width options is set, but the other not, the aspect ratio is preserved.
  • If neither height nor width is set, the original size is used.

Logo types

auto

Trys to detect the logo type depending on the value of --logo, in the following order:

  • If the value is empty / not set, an autodected builtin logo is displayed.
  • If the value is the name of a builtin logo, it is displayed.
  • If the value is the path to an image file, and the terminal emulator is known to support an image protocol, the image is displayed.
  • If the value is the path to a text file, the content is displayed.
  • The autodetected builtin logo is displayed.

builtin

The value of --logo is interpreted as the name of a builtin logo.

  • If the value is empty / not set, it is autodetected.
  • Use --list-logos to get a list of all available logos.
  • Use --print-logos to see all available logos.
  • All builtin logos set default values for --logo-color-[1-9].
  • Use none to disable the logo, but keep key colors from the detected logo.

small

Like builtin, but search for small logos. Assume you are running macOS

  • default -> macos
  • -l small -> macos_small
  • --logo-type small -> macos_small
  • -l macos -> macos
  • -l macos --logo-type small -> macos_small
  • -l macos_small -> macos_small
  • -l macos_small --logo-type small -> error, because Logo macos_small_small doesn't exist

file

The value of --logo is interpreted as the path to a file. The content of the file is displayed.

  • If the file can't be read, the autodetected builtin logo is displayed.

file-raw

The value of --logo is interpreted as the path to a file. The content of the file is displayed.

  • No color placeholder replacement is done.
  • If the file can't be read, the autodetected builtin logo is displayed.
  • Single dash (-) is alias of /dev/stdin, which can be used to pipe another program's output to fastfetch.

data

The value of --logo is interpreted as the logo and directly displayed.

  • If the value is empty / not set, the autodetected builtin logo is displayed.

data-raw

The value of --logo is interpreted as the logo and directly displayed.

  • No color placeholder replacement is done.
  • If the value is empty / not set, the autodetected builtin logo is displayed.

sixel

The value of --logo is interpreted as the path to an image file. It is displayed using the sixel graphics protocol.

  • fastfetch must be compiled with the imagemagick6 or imagemagick7 feature.
  • Has widest terminal support.

See also this issue for rendering transparent backgrounds.

kitty

The value of --logo is interpreted as the path to an image file. It is displayed using the kitty graphics protocol.

  • fastfetch must be compiled with the imagemagick6 or imagemagick7 feature.

kitty-direct

The value of --logo is interpreted as the path to an image file. It is displayed using the kitty graphics protocol, and the image is directly send to the terminal emulator.

  • Both --logo-width and --logo-height must be specified.
  • This is by far the fastest image protocol because the image content is loaded dirently by terminal but not encoded and passed through tty. We suggest using it if supported by the terminal you use.
  • Known to work with wezterm (png, jpg, webp and maybe more) and kitty (png only).
  • Note konsole (up to 23.04) is said to support kitty image protocol, it doesn't support kitty-direct.

iterm

The value of --logo is interpreted as the path to an image file. It is displayed using the iTerm graphics protocol.

  • Both --logo-width and --logo-height must be specified.
  • Known to work with wezterm ( kitty-direct is preferred ), iterm2 and konsole.

chafa

The value of --logo is interpreted as the path to an image file. It is converted to an ascii logo using libchafa.

  • fastfetch must be compiled with the chafa feature.
  • fastfetch must be compiled with the imagemagick6 or imagemagick7 feature.
  • Use --chafa-fg-only to set weather to render foreground only.
  • Use --chafa-symbols to set the symbols.
  • Use --chafa-canvas-mode to set the canvas mode.
  • Use --chafa-color-space to set the color space.
  • Use --chafa-dither-mode to set the dither mode.
  • See the chafa documentation for more information.

raw

The value of --logo is interpreted as the path to a binary file. It is printed as-is.

  • Both --logo-width and --logo-height must be specified.
  • Use this to display a pre converted image file.
  • If the file can't be read, the autodetected builtin logo is displayed.

This is preferred way to display sixel images. For example

$ # make sure libsixel is installed
$ img2sixel /path/to/image > image.sixel # convert an image to sixel format
$ cat image.sixel && echo END # check if it works fine, and get the number of rows and columns the image uses ( before `END` is printed )
$ fastfetch --raw image.sixel --logo-width $NUMBER_OF_COLUMNS_USES --logo-height $NUMBER_OF_ROWS_USES

Some terminal provided imgcat. It can be used for --raw too

$ imgcat /path/to/image > image.bin $ convert an image to whatever format that terminal supports
$ cat image.bin && echo END
$ fastfetch --raw image.bin --logo-width $NUMBER_OF_COLUMNS_USES --logo-height $NUMBER_OF_ROWS_USES

Troubleshooting

  1. My logo won't display: Try --pipe false. Fastfetch detects if its output is piped ( stdout is not a tty ), in this case, all colors and logo will be removed. See fastfetch -h pipe
  2. Image collapses command line text: This is a known issue. Try specifying --logo-width and --logo-height, or prefix fastfetch with clear && to clear screen before printing logos ( this matches the behavior of neofetch )

Docs

  1. Configuration
  2. Json Schema
  3. Logo Options
  4. Migrate Neofetch Logo To Fastfetch
  5. Dependencies
  6. Building
  7. Support Status
  8. Benchmark
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