Collection of Tasks to Crop, Resize & Compress Images

Taskfile.gif.yml

---
version: "3"

tasks:
  convert:
    dir: "{{.USER_WORKING_DIR}}"
    desc: Convert Animated PNGs to Gifs
    summary: |
      task gif:convert
    cmds:
      - for file in ./*.png; do ffmpeg -i "$file" -filter_complex "[0:v] scale=256:256, split [a][b]; [a] palettegen=reserve_transparent=on:transparency_color=ffffff [p]; [b][p] paletteuse" "${file%.*}.gif"; done
    sources:
      - ./*.png
    generates:
      - ./*.gif

  compress:
    dir: "{{.USER_WORKING_DIR}}"
    desc: Compress Gifs
    summary: |
      task gif:compress
    vars:
      FOLDER: "gif"
    cmds:
      - for file in ./*.gif; do convert "$file" -coalesce -fuzz 5% -layers Optimize +map "${file%.*}.min.gif"; done
      - mkdir -p {{.FOLDER}}
      - mv *.min.gif ./{{.FOLDER}}
    sources:
      - ./*.gif
    generates:
      - ./{{.FOLDER}}/*.min.gif

Taskfile.webp.yml

---
version: "3"

tasks:
  compress:
    dir: "{{.USER_WORKING_DIR}}"
    aliases: [c]
    desc: Used to Compress WebP Images.
    summary: |
      task webp:compress
      task webp:compress -- 90 // Specify Quality
    vars:
      QUALITY: "{{default 80 .CLI_ARGS}}"
      FOLDER: "webp"
    cmds:
      - mkdir -p {{.FOLDER}}
      - defer: mv *.webp ./{{.FOLDER}}
      - for file in ./*.*; do cwebp -mt -q {{.QUALITY}} "$file" -o "${file%.*}.webp"; done
    sources:
      - ./*.png
    generates:
      - ./{{.FOLDER}}/*.webp

  scale:
    dir: "{{.USER_WORKING_DIR}}"
    aliases: [s]
    desc: Used to Compress WebP Images.
    summary: |
      task webp:scale
      task webp:scale -- 2000 // Specify Scale
      QUALITY=70 task webp:s -- 1000 // Specify Quality & Scale
    vars:
      WIDTH: "{{default 2000 .CLI_ARGS}}"
      QUALITY: "{{default 80 .QUALITY}}"
      FOLDER: "webp"
    cmds:
      - for file in ./*.*; do cwebp -q {{.QUALITY}} "$file" -o "${file%.*}.webp"; done
      - mkdir -p {{.FOLDER}}
      - mv *.webp ./{{.FOLDER}}
    sources:
      - ./*.png
    generates:
      - ./{{.FOLDER}}/*.webp

  crop:
    dir: "{{.USER_WORKING_DIR}}"
    desc: Used to Crop WebP Images.
    summary: |
      task webp:crop -- 1000 1000
    cmds:
      - for file in ./*; do cwebp -mt -q 80 -crop 0 0 {{.CLI_ARGS}} "$file" -o "${file%.*}.webp"; done

Taskfile.yml

---
version: "3"

env:
  QUALITY: 80

includes:
  webp: ./Taskfile.webp.yml
  gif: ./Taskfile.gif.yml

tasks:
  update:
    desc: Update all installed dependencies
    summary: |
      task update
    cmds:
      - brew update
      - brew upgrade
      - brew cleanup

  install:
    desc: Install all dependencies using HomeBrew
    summary: |
      Must have Task installed (brew install go-task)
      task setup
    cmds:
      - task: update
      - brew install ffmpeg
      - brew install imagemagick
      - brew install webp

  create:
    desc: Creates a Taskfile.yml
    summary: |
      task create -- gif
    cmds:
      - echo --- > Taskfile.{{.CLI_ARGS}}.yml

> brew install go-task
...
> cd subdirectory
> task webp:compress
...
> cd another_sub_directory
> task gif:convert task gif:compress