img2irc (1.3.1)

img2irc is a premiere command-line utility which converts images to irc/ansi art, with a lot of post-processing filters

$ img2irc https://i.imgur.com/qP1uBCK.png

   

how to install

• one-line installer (recommended)

  installs img2irc to /usr/local/bin

  curl -sL https://github.com/waveplate/img2irc/releases/download/v1.3.1/img2irc-1.3.1-linux-x86_64.tar.gz | sudo tar -xzf - --strip-components=1 -C /usr/local/bin img2irc-1.3.1/img2irc
  

  statically linked with musl, works on all x86_64 linux platforms

• install with yay (arch linux)

  yay -S img2irc-bin
  

  or

  yay -S img2irc
  

  if you prefer to compile it yourself

---

no sixel, no problem

mandarin duck, ansi24. 80px -- when images are rendered in 24-bit colour, they can look quite good even at small sizes

---

font installation (recommended)

certain glyph types (triangle, corner, geometric, box, legacy) requuire obscure unicode glyphs not found it most fonts. if your output looks broken, try installing cascadia code -- it's a great font regardless. full, half, quarter, and eighth blocks typically work without extra fonts.

if you use linux, you can configuree your system to only use cascadia code as a fallback, i.e., when your preferred font is missing a unicode glyph. check out this guide for more info. it's aimed at arch, but the general idea is the same for all distros

debian/ubuntu

cascadia code is available in debian/ubuntu via the fonts-cascadia-code package:

sudo apt install fonts-cascadia-code

arch linux

on arch linux, cascadia code can be installed from the community repository:

sudo pacman -S ttf-cascadia-code

windows

1. download the latest cascadia code release from github.
2. extract the zip archive.
3. install the .ttf or .otf files you need by right-clicking → install, or copy them to c:\windows\fonts.

usage

img2irc <URL or PATH> [OPTIONS]

option	description	default value
image	image url or file path	required
-w, --width	output image width in columns	auto
-H, --height	output image height in rows	auto
--scale	scaling factors (x:y, e.g., "2:2")	none
--crop	crop image ("x1,y1,x2,y2")	none
--filter	sampling filter	nearest
--rotate	rotate degrees	0
--fliph	flip horizontal	false
--flipv	flip vertical	false

colours rendering modes

option	description	default	options
--render	colour rendering mode	ansi	irc, ansi, ansi24

irc mode has 99 colours, (6.62-bit)

ansi mode has 256 colours (8-bit)

ansi24 has 16777216 colours (24-bit)

pixel rendering modes

option	description	default	options (comma-separated)
--braille	use braille pixels	false	N/A
--blocks[=types]	use block pixels of the provided types	full, half, quarter, eighth, triangle, corner, geometric, box, legacy

braille mode

`--braille$ \text{uses} 2 \times 4 \text{braille} \text{dot} \text{patterns}, \text{doubling} \text{horizontal} \text{and} \text{quadrupling} \text{vertical} \text{resolution}

\text{block} \text{modes}

\text{type}	\text{description}	\text{unicode} \text{range}
$full`	full block	0x20 + 0x2588
half	half block	0x2580-0x2590
quarter	quarter block	0x2596-0x259F
eighth	eighth block	0x2581-0x2595
triangle	triangle shapes	0x25B2-0x25C0
corner	corner triangles	0x25E2-0x25E5
geometric	geometric patterns	0x25A0-0x25FF
box	box-drawing glyphs	0x2500-0x257F
legacy	legacy block styles	0x1FB00-0x1FBFF

must be provided as a comma-delimited string

specifying --blocks with no value uses all available glyph types

full only uses the ASCII space and fullblock glyph

half increases the vertical resolution twofold

quarter increases both vertical and horizontal resolution twofold

eighth increases resolution in one axis at a time up to eightfold

triangle uses triangle shapes

corner uses corner triangle shapes

geometric uses some geometric shapes

box uses some box-drawing characters

legacy uses some legacy geometric shapes

see src/chars.rs for the actual glyphs and bitmaps or read utils/README.md for information on how to generate a custom chars.rs file

image processing options

option	description	default value
-b, --brightness	adjust brightness (0 = no change)	0.0
-c, --contrast	adjust contrast (0 = no change)	0.0
-g, --gamma	adjust gamma (0 to 255)	0.0
-s, --saturation	adjust saturation (0 = no change)	0.0
-u, --hue	rotate hue (0 to 360)	0.0
-i, --invert	colors are inverted, opposite on the color wheel	false
-d, --dither	dithering (1 to 8)	0
-B, --luma-brightness	adjust luma brightness (braille only)	0.0
-C, --luma-contrast	adjust luma contrast (braille only)	0.0
-G, --luma-gamma	adjust luma gamma (braille only)	0.0
-S, --luma-saturation	adjust luma saturation (braille only)	0.0
-I, --luma-invert	luminance is inverted (braille only)	false
--colorspace	colourspace (hsl, hsv, hsluv, lch)	hsv
--grayscale	converts image to black and white	false
--nograyscale	exclude grayscale when picking nearest colour in palette (unless already grayscale)	false
--pixelize	pixelize pixel size	0
--boxblur	simple average of all the neighboring pixels surrounding one	false
--gaussianblur	gaussian blur radius	0
--oil	oil filter ("[radius],[intensity]")	none
--halftone	made up of small dots creating a continuous-tone illusion	false
--sepia	brownish, aged appearance like old photographs	false
--normalize	adjusts brightness and contrast for better image quality	false
--noise	random variations in brightness and color like film grain	false
--emboss	gives a raised, 3d appearance	false
--identity	no modifications, unchanged image	false
--laplace	enhances edges and boundaries in an image	false
--denoise	reduces noise for a cleaner, clearer image	false
--sharpen	increases clarity and definition, making edges and details more distinct	false
--cali	cool blue tone with increased contrast	false
--dramatic	high contrast and vivid colors for a dramatic effect	false
--firenze	warm, earthy tones reminiscent of tuscan landscapes	false
--golden	warm, golden glow like sunset light	false
--lix	high-contrast black and white appearance with increased sharpness	false
--lofi	low-fidelity, retro appearance like old photographs or film	false
--neue	clean, modern appearance with neutral colors and simple design	false
--obsidian	dark, monochromatic appearance with black and gray shades	false
--pastelpink	soft, delicate pink tint like pastel colors	false
--ryo	bright, high-contrast appearance with vivid colors and sharp details	false
--frostedglass	blurred, frosted appearance as if viewed through semi-transparent surface	false
--solarize	strange, otherworldly appearance with inverted colors and surreal atmosphere	false
--edgedetection	highlights edges and boundaries in an image	false