image2avifwebp.ps1

$sourceFolder = "${pwd}\*"
$filePatterns = '*.png','*.jpg','*.gif'

Get-ChildItem -Path $sourceFolder -Include $filePatterns -File -Recurse | ForEach-Object {
    $name = $_.FullName
    $webp = [System.IO.Path]::ChangeExtension($name,".webp")
    $avif = [System.IO.Path]::ChangeExtension($name,".avif")
    echo "Orig: $name"
    echo "WebP: $webp"
    magick "$name" "$webp"
    echo "AVIF: $avif"
    magick -define "heic:speed=2" "$name" "$avif"
    echo ""
}

See 如何使用 ImageMagick 批次將 PNG 圖片轉檔成 AVIF 與 WebP 格式