A PowerShell script for comparing the HTMLs fetched by Invoke-WebRequest

compare-htmls.ps1

function Get-HtmlContent($url)
{
    Invoke-WebRequest $url `
    | select -ExpandProperty Content `
    | % {$_.Split([Environment]::NewLine, [StringSplitOptions]::RemoveEmptyEntries)}
}

$html1 = Get-HtmlContent "https://foo.example.com"
$html2 = Get-HtmlContent "https://bar.example.com"

if (-not (Compare-Object $html1 $html2))
{
    Write-Host "no differences"
}
else
{
    Write-Host "has differences"
}