Bring back my Win10 default Local Account Photo and remove low resolution Win11 garbage default user photo for my Win10 PC.

replace2.ps1

# 1. 获取当前用户 SID
$SID = ([System.Security.Principal.WindowsIdentity]::GetCurrent()).User.Value
$targetDir = "C:\Users\Public\AccountPictures\$SID"
$sourceDir = "C:\ProgramData\Microsoft\User Account Pictures"

Write-Output "targetDir = $targetDir"
Write-Output "sourceDir = $sourceDir"


# 可选资源列表（按优先级从高到低）
$sourceMap = @{
    192 = "user-192.png"
    32  = "user-32.png"
    40  = "user-40.png"
    48  = "user-48.png"
}

# 回退源头像
$defaultPng = Join-Path $sourceDir "user.png"
$defaultBmp = Join-Path $sourceDir "user.bmp"

# 遍历所有 *-Image*.jpg 文件
Get-ChildItem -Path $targetDir -Filter "*-Image*.jpg" -Force | ForEach-Object {
    $file = $_
    $match = $file.Name -match "-Image(\d+)\.jpg"

    if ($match) {
        $size = [int]$matches[1]
        $targetPath = $file.FullName

        # 选择最匹配的源图像
        $sourceFile = $null

        if ($sourceMap.ContainsKey($size)) {
            $candidate = Join-Path $sourceDir $sourceMap[$size]
            if (Test-Path $candidate) {
                $sourceFile = $candidate
            }
        }

        # 若无精确匹配，尝试 user.png
        if (-not $sourceFile -and (Test-Path $defaultPng)) {
            $sourceFile = $defaultPng
        }

        # 若还无，用 bmp
        if (-not $sourceFile -and (Test-Path $defaultBmp)) {
            $sourceFile = $defaultBmp
        }

        if ($sourceFile) {
            try {
                # 移除 S/H/R 属性
                attrib -S -H -R $targetPath
                Copy-Item -Path $sourceFile -Destination $targetPath -Force
                # 恢复 S/H/R 属性
                attrib +S +H +R $targetPath
                Write-Host "✅ 替换 $($file.Name) ← $([System.IO.Path]::GetFileName($sourceFile))"
            } catch {
                Write-Host "❌ 替换失败：$($file.Name) - $($_.Exception.Message)" -ForegroundColor Red
            }
        } else {
            Write-Host "❌ 未找到可用于替换的头像图像（$($file.Name)）"
        }
    } else {
        Write-Host "❓ 文件名格式无效：$($file.Name)"
    }
}