Powershell script to convert an image to base64 data uri format and store in a text file

ImgToBase64.ps1

Param([String]$path)

[bool]$valid = ($path -ne "")
if($valid) {
    [String[]]$elements = $path.split(".")
    [int]$max = $elements.Count -1
    [String]$ext = $elements[$max]
    [String]$uri = "data:image/$($ext);base64,"
    $elements[$max] = "txt"
    [String]$txtPath = $elements -join "."
   
    if(!(Test-Path $path)) {
        echo ""
        echo "Unable to find image file: $path"
        break
    }

    if((Test-Path $txtPath)) {
        echo ""
        echo "Output file already exists: $txtPath, clearing file"
        Clear-Content $txtPath
    }
} else {
    break
}
[String]$base64 = [convert]::ToBase64String((Get-Content $path -encoding byte))
Write-Output ($uri + $base64) >> $txtPath