PowerShell function you can use for reading UTF8 encoded HTML pages content. The built in Invoke-WebRequest and Invoke-RestMethod fail miserably.

powershell-net.ps1

function Read-HtmlPage {
    param ([Parameter(Mandatory=$true, Position=0, ValueFromPipeline=$true)][String] $Uri)

    # Invoke-WebRequest and Invoke-RestMethod can't work properly with UTF-8 Response so we need to do things this way.
    [Net.HttpWebRequest]$WebRequest = [Net.WebRequest]::Create($Uri)
    [Net.HttpWebResponse]$WebResponse = $WebRequest.GetResponse()
    $Reader = New-Object IO.StreamReader($WebResponse.GetResponseStream())
    $Response = $Reader.ReadToEnd()
    $Reader.Close()

    # Create the document class
    [mshtml.HTMLDocumentClass] $Doc = New-Object -com "HTMLFILE"
    $Doc.IHTMLDocument2_write($Response)
    
    # Returns a HTMLDocumentClass instance just like Invoke-WebRequest ParsedHtml
    $Doc
}