How to use PowerShell to create HTML from a Text File

Recently I was tasked with creating a Cluster Health Report for the Windows 2008 R2 Clusters. I was able to do this with PowerShell using the failovercluster cmdlets. This was outputted to a text file and emailed to the support for review daily.

To expand / enhance the report it was suggested to create it in HTML format. So back to PowerShell we go and low and behold we find the ConvertTo-Html cmdlet. Looking at the get-help and document one would think that using the command is straight forward, but in reality it is a bit more to it.

For example, we could pass

get-service | convertto-html -as LIST > c:\temp\services.htm

and get

Pretty simple, right? That’s what I thought, so my inclination was to feed it the text file to ConvertTo-Html and Get_content and I will have a finished product.

$SourceFile = "C:\Support\clustercheck.txt"
$TargetFile = "C:\Support\clustercheck.htm"

Get-Content $SourceFile | ConvertTo-Html | Out-File $TargetFile

No such dice, what I received was a bunch of garbage output. Upon further research found rather than just wrapping text in HTML, ConvertTo-Html will output  properties of objects to HTML. When reading the file using Get-Content you end up with an array of string objects. These objects are being passed to ConvertTo-Html through the pipe. The string objects contain properties. And these properties are being output to the HTML. In order to use ConvertTo-Html we will need to create objects that would contain text lines as properties.

So things just got a bit more complicated. What we have to do is read each line of the text file and create a PSObject and add-member for each of the lines, then run ConvertTo-HTML. What you end up with is this code.

$SourceFile = "C:\Support\clustercheck.txt"
$TargetFile = "C:\Support\clustercheck.htm"

$File = Get-Content $SourceFile
$FileLine = @()
Foreach ($Line in $File) {
 $MyObject = New-Object -TypeName PSObject
 Add-Member -InputObject $MyObject -Type NoteProperty -Name HealthCheck -Value $Line
 $FileLine += $MyObject
$FileLine | ConvertTo-Html -Property HealthCheck -body "<H2>Cluster Healthcheck</H2>" | Out-File $TargetFile

Now when it is ran we get what we were looking for in the first place. So no we have a start towards an HTML outputted report. So if we wanted to make the report look nicer we could pass formatting in the ConvertTo-Html cmdlet.

Using the above snippet as a shell you can use any text file to create html formatted reports in PowerShell.


3 Responses to “How to use PowerShell to create HTML from a Text File”

  1. Juwel says:

    This is a great Post,Thank you very much!
    I want to print the data as HTML table – how can I do that?

  2. mahantesh says:

    hi, i have text file which I would like to convert to html. the text file contains columns, i would like to convert this to html with columns displaying in table. below is sample of text in text file.
    Changeset Merged in Changeset Author Date
    ——— ——————- ———– ———
    179 407 aaaa 5/28/2014
    182 407 aaaa 5/28/2014
    203 407 aaad 5/28/2014

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