Using PowerShell to write a file in UTF-8 without the BOM

encoding powershell utf-8 byte-order-mark
M. Dudley picture M. Dudley · Apr 8, 2011 · Viewed 264.6k times · Source

Out-File seems to force the BOM when using UTF-8:

$MyFile = Get-Content $MyPath
$MyFile | Out-File -Encoding "UTF8" $MyPath

How can I write a file in UTF-8 with no BOM using PowerShell?

Answer

M. Dudley picture M. Dudley · Apr 8, 2011

Using .NET's UTF8Encoding class and passing $False to the constructor seems to work:

$MyRawString = Get-Content -Raw $MyPath
$Utf8NoBomEncoding = New-Object System.Text.UTF8Encoding $False
[System.IO.File]::WriteAllLines($MyPath, $MyRawString, $Utf8NoBomEncoding)

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