How to Upload a List Template in SharePoint 2013 using PowerShell?

Requirement: Upload a custom list template to specific site collections in a web application. While upload a list template using from SharePoint web interface is simple, wanted to automate this process as its repeating for multiple site collections.

PowerShell to Upload list template in SharePoint 2013:
Here is the PowerShell script to upload custom list template to SharePoint site :

Add-PSSnapin Microsoft.SharePoint.Powershell -ErrorAction SilentlyContinue

Function Upload-ListTemplate($WebURL, $TemplateFilePath)
{
 #Get the Web
 $web = Get-SPWeb $WebURL
 #Get the List template Gallery Folder
 $TemplateFolder = $web.GetFolder("List Template Gallery") 
 #Get the Files collection
 $TemplateFileCollection = $TemplateFolder.Files
 #Get the Template file from Local File system
 $TemplateFile = Get-ChildItem $TemplateFilePath
 
 #Open the File in Read mode and Add to Templates collection 
    $TemplateFileCollection.Add("_catalogs/lt/$($TemplateFile.Name)", $TemplateFile.OpenRead(), $true)
 Write-Host "Done!Template has been uploaded!!"
}

 #Call the function to upload list template
 Upload-ListTemplate "http://intranet.crescent.com" "D:\Templates\CreditTemplate.stp"

You can verify the uploaded template by navigating to List template gallery: http://intranet.crescent.com/_catalogs/lt/Forms/AllItems.aspx