ascii-image-converter

ascii-image-converter is a command-line tool that converts images into ascii art and prints them out onto the console. Available on Windows, Linux and macOS.

Now supports braille art!

Input formats currently supported:

JPEG/JPG
PNG
BMP
WEBP
TIFF/TIF
GIF

Single image:

Multiple images:

GIF:

Installation
CLI Usage
- Flags
Library Usage
Contributing
Packages Used
License

Installation

Debian or Ubuntu-based Distros

Execute the following commands in order:

echo 'deb [trusted=yes] https://apt.fury.io/ascii-image-converter/ /' | sudo tee /etc/apt/sources.list.d/ascii-image-converter.list

sudo apt update

sudo apt install -y ascii-image-converter

To remove the package source (which means you won't be getting any further updates), execute this command:

sudo rm -rfv /etc/apt/sources.list.d/ascii-image-converter.list

Homebrew

Installation with homebrew is available for both Linux and macOS.

brew install TheZoraiz/ascii-image-converter/ascii-image-converter

Link to homebrew repository

Snap

Note: The snap will not have access to hidden files and files outside the $HOME directory. This includes write access for saving ascii art as well.

sudo snap install ascii-image-converter

Visit the app's snap store listing for instructions regarding enabling snapd on your distribution.

Go

go install github.com/TheZoraiz/ascii-image-converter@latest

For physically installing the binaries, follow the steps with respect to your OS.

Linux

Download the archive for your distribution's architecture here, extract it, and open the extracted directory.

Now, open a terminal in the same directory and execute this command:

sudo cp ascii-image-converter /usr/local/bin/

Now you can use ascii-image-converter in the terminal. Execute ascii-image-converter -h for more details.

Windows

You will need to set an Environment Variable to the folder the ascii-image-converter.exe executable is placed in to be able to use it in the command prompt. Follow the instructions in case of confusion:

Download the archive for your Windows architecture here, extract it, and open the extracted folder. Now, copy the folder path from the top of the file explorer and follow these instructions:

In Search, search for and then select: System (Control Panel)
Click the Advanced System settings link.
Click Environment Variables. In the section User Variables find the Path environment variable and select it. Click "Edit".
In the Edit Environment Variable window, click "New" and then paste the path of the folder that you copied initially.
Click "Ok" on all open windows.

Now, restart any open command prompt and execute ascii-image-converter -h for more details.

CLI Usage

Note: Decrease font size or increase terminal width (like zooming out) for maximum quality ascii art

The basic usage for converting an image into ascii art is as follows. You can also supply multiple image paths and urls as well as a GIF.

ascii-image-converter [image paths/urls]

Example:

ascii-image-converter myImage.jpeg

Flags

--color OR -C

Display ascii art with the colors from original image. Works with the --negative flag as well.

ascii-image-converter [image paths/urls] -C
# Or
ascii-image-converter [image paths/urls] --color

--braille OR -b

Note: Braille pattern display heavily depends on which terminal or font you're using. In windows, try changing the font from command prompt properties if braille characters don't display

Use braille characters instead of ascii. For this flag, your terminal must support braille patters (UTF-8) properly. Otherwise, you may encounter problems with colored or even uncolored braille art.

ascii-image-converter [image paths/urls] -b
# Or
ascii-image-converter [image paths/urls] --braille

--threshold

Set threshold value to compare for braille art when converting each pixel into a dot. Value must be between 0 and 255.

Example:

ascii-image-converter [image paths/urls] -b --threshold 170

--dimensions OR -d

Note: Don't immediately append another flag with -d

Set the width and height for ascii art in CHARACTER lengths.

ascii-image-converter [image paths/urls] -d <width>,<height>
# Or
ascii-image-converter [image paths/urls] --dimensions <width>,<height>

Example:

ascii-image-converter [image paths/urls] -d 60,30

--width OR -W

Note: Don't immediately append another flag with -W

Set width of ascii art. Height is calculated according to aspect ratio.

ascii-image-converter [image paths/urls] -W <width>
# Or
ascii-image-converter [image paths/urls] --width <width>

Example:

ascii-image-converter [image paths/urls] -W 60

--height OR -H

Note: Don't immediately append another flag with -H

Set height of ascii art. Width is calculated according to aspect ratio.

ascii-image-converter [image paths/urls] -H <height>
# Or
ascii-image-converter [image paths/urls] --height <height>

Example:

ascii-image-converter [image paths/urls] -H 60

--map OR -m

Note: Don't immediately append another flag with -m

Pass a string of your own ascii characters to map against. Passed characters must start from darkest character and end with lightest. There is no limit to number of characters.

Empty spaces can be passed if string is passed inside quotation marks. You can use both single or double quote for quotation marks. For repeating quotation mark inside string, append it with \ (such as \").

ascii-image-converter [image paths/urls] -m "<string-of-characters>"
# Or
ascii-image-converter [image paths/urls] --map "<string-of-characters>"

Following example contains 7 depths of lighting.

ascii-image-converter [image paths/urls] -m " .-=+#@"

--grayscale OR -g

Display ascii art in grayscale colors. This is the same as --color flag, except each character will be encoded with a grayscale RGB value.

ascii-image-converter [image paths/urls] -g
# Or
ascii-image-converter [image paths/urls] --grayscale

--negative OR -n

Display ascii art in negative colors. Works with both uncolored and colored text from --color flag.

ascii-image-converter [image paths/urls] -n
# Or
ascii-image-converter [image paths/urls] --negative

--complex OR -c

Print the image with a wider array of ascii characters for more detailed lighting density. Sometimes improves accuracy.

ascii-image-converter [image paths/urls] -c
# Or
ascii-image-converter [image paths/urls] --complex

--full OR -f

Print ascii art that fits the terminal width while maintaining aspect ratio.

ascii-image-converter [image paths/urls] -f
# Or
ascii-image-converter [image paths/urls] --full

--flipX OR -x

Flip the ascii art horizontally on the terminal.

ascii-image-converter [image paths/urls] --flipX
# Or
ascii-image-converter [image paths/urls] -x

--flipY OR -y

Flip the ascii art vertically on the terminal.

ascii-image-converter [image paths/urls] --flipY
# Or
ascii-image-converter [image paths/urls] -y

--save-img OR -s

Note: Don't immediately append another flag with -s

Saves the ascii as a PNG image with the name <image-name>-ascii-art.png in the directory path passed to the flag. Can work with both --color and --negative flag.

Example for current directory:

ascii-image-converter [image paths/urls] --save-img .
# Or
ascii-image-converter [image paths/urls] -s .

--save-txt

Similar to --save-img but it creates a TXT file with the name <image-name>-ascii-art.txt in the directory path passed to the flag. Only saves uncolored text.

Example for current directory:

ascii-image-converter [image paths/urls] --save-txt .

--save-gif

Note: This is an experimental feature and may not result in the finest quality GIFs, because all GIFs still aren't supported by ascii-image-converter.

Saves the passed GIF as an ascii art GIF with the name <image-name>-ascii-art.gif in the directory path passed to the flag.

--save-bg

Note: This flag will be ignored if --save-img or --save-gif flags are not set

This flag takes an RGB value that sets the background color in saved png and gif files.

ascii-image-converter [image paths/urls] -s . --save-bg 255,255,255 # For white background

--font

Note: This flag will be ignored if --save-img or --save-gif flags are not set

This flag takes path to a font .ttf file that will be used to set font in saved png or gif files.

ascii-image-converter [image paths/urls] -s . --font /path/to/font-file.ttf

--font-color

This flag takes an RGB value that sets the font color in saved png and gif files as well as displayed ascii art in terminal.

ascii-image-converter [image paths/urls] -s . --font-color 0,0,0 # For black font color

--formats

Display supported input formats.

ascii-image-converter --formats

Library Usage

Note: The library may throw errors during Go tests due to some unresolved bugs with the consolesize-go package (Only during tests, not main program execution). Furthermore, GIF conversion is not advised as it isn't fully library-compatible yet.

First, install the library with:

go get -u github.com/TheZoraiz/ascii-image-converter/aic_package

The library is to be used as follows:

package main

import (
	"fmt"

	"github.com/TheZoraiz/ascii-image-converter/aic_package"
)

func main() {
	// If file is in current directory. This can also be a URL to an image or gif.
	filePath := "myImage.jpeg"

	flags := aic_package.DefaultFlags()

	// This part is optional.
	// You can directly pass default flags variable to aic_package.Convert() if you wish.
	// There are more flags, but these are the ones shown for demonstration
	flags.Dimensions = []int{50, 25}
	flags.Colored = true
	flags.SaveTxtPath = "." 
	flags.SaveImagePath = "."
	flags.CustomMap = " .-=+#@"
	flags.FontFilePath = "./RobotoMono-Regular.ttf" // If file is in current directory
	flags.SaveBackgroundColor = [3]int{50, 50, 50}
	
	// Conversion for an image
	asciiArt, err := aic_package.Convert(filePath, flags)
	if err != nil {
		fmt.Println(err)
	}

	fmt.Printf("%v\n", asciiArt)

	// -----
	// GIF CONVERSION IS AN EXPERIMENTAL FEATURE
	// For a gif. This function may run infinitely, depending on the gif
	// Work needs to be done on gif conversion to be more library-compatible

	filePath = "myGif.gif"

	_, err := aic_package.Convert(filePath, flags)
	if err != nil {
		fmt.Println(err)
	}
}

Contributing

You can fork the project and implement any changes you want for a pull request. However, for major changes, please open an issue first to discuss what you would like to implement.