GoWall

GoWall Introduction

关注桌面个性化的可能对Color Scheme / Palette比较感兴趣，诸如Catppuccin、Nord等主题。GoWall是一个非常有用的工具，可以帮助你将图片转换为特定的Color Scheme

Achno/gowall: A tool to convert a Wallpaper’s color scheme / palette, image to pixel art, color palette extraction, image upsacling with Adversarial Networks and more image processing features

• Convert Wallpaper’s theme 👾 – Recolor an image to match your favorite + (Custom) themes (Catppuccin…)
• AI Image Upscaling - Increase the resolution of the image while preserving or improving its quality.
• Support for Unix pipes/redirection - Read from stdin and write to stdout
• Convert Icon’s theme (svg,ico) - Recolor your icons to match a theme
• Image to pixel art - Transforms your image to the typical blocky appearance of pixel art.
• Replace a specific color in an image - pretty self explanatory.
• Create a gif from images - use the images as frames and specify a delay and the number of loops.
• Extact color palette - Extracts all the dominant colors in an image (like pywal)
• Change Image format - Ex. change format from .webp to .png.
• Invert image colors - pretty self explanatory.
• Draw on the Image - Draw borders,grids on the image
• Remove the background of the image - pretty self explanatory.
• Effects - Mirror,Flip,Grayscale,change brightness and more to come!
• Daily wallpapers - Explore community-voted wallpapers that reset daily.

Installation

参考下面文档完成安装

installation | Gowall Docs

Scripts

个人经常使用GoWall转换图片的Color Scheme，在提交到Repo/ImageBed前通常会转成webp格式，对应的命令如下：

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gowall convert ./img/cover.jpg -t catppuccin --output ./cover.webp

重复键入命令比较麻烦，且nushell目前没有gowall的自动补全，这里提供一个脚本来简化操作。dotfiles/bin/mocha_it at main · Efterklang/dotfiles

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#!/bin/bash

# Ref: [installation | Gowall Docs](https://achno.github.io/gowall-docs/installation)

# 检查参数数量
if [ $# -ne 1 ]; then
  echo "用法: $0 <图片文件路径>"
  echo "示例: $0 ./img/cover.jpg"
  exit 1
fi

# 获取输入文件路径
input_file="$1"

# 检查文件是否存在
if [ ! -f "$input_file" ]; then
  echo "错误: 文件 '$input_file' 不存在"
  exit 1
fi

# 获取文件名（不含路径和扩展名）
filename=$(basename "$input_file")
filename_no_ext="${filename%.*}"

# 构建输出文件路径（当前工作目录 + 文件名 + .webp）
output_file="$(pwd)/${filename_no_ext}.webp"

# 执行gowall命令
echo "正在转换: $input_file -> $output_file"
gowall convert "$input_file" -t catppuccin --output "$output_file"

# 检查命令执行结果
if [ $? -eq 0 ]; then
  echo "✅ 转换成功: $output_file"
else
  echo "❌ 转换失败"
  exit 1
fi

Usage

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# 赋予脚本执行权限
chmod +x mocha_it
# 将脚本放在PATH中，例如：~/bin/mocha_it，个人是存在到`~/dotfiles/bin/`目录下
export PATH="$PATH:~/dotfiles/bin"
# 执行脚本
mocha_it ./img/cover.jpg