Find how many links will be queried when using the SXA Navigation component with a Sitecore PowerShell Extensions script.

ScanNavigationLinks.ps1

$levelFrom = 1
$levelTo = 4
$navigationFilterId = "{D063E9D1-C7B5-4B1E-B31E-69886C9C59F5}" # Main Navigation
#$navigationFilterId = "{6594C7CB-9588-47F6-B1E3-03783C9EAA79}" # Mobile Navigation
$navigationFilterFieldId = "{1FBC6A49-6281-48EE-87E9-A3970B145ADB}"
$navigableTemplateId = "{371D5FBB-5498-4D94-AB2B-E3B70EEBE78C}"
$counter = 0
$startItem = Get-Item -Path "master:" -ID "{961563FC-3445-4558-BF3A-06DF06BA6298}"
function Walk-ItemTree {
    param(
        $startItem,
        $level
    )
    
    $levelItems = [System.Collections.ArrayList]@()
    $children = $startItem.Children
    foreach($child in $children) {
        [System.Threading.Interlocked]::Increment([ref] $counter) > $null
        # Check if the item is filtered out
        $selectedFilters = $child[$navigationFilterFieldId]
        if(![string]::IsNullOrEmpty($selectedFilters) -and $selectedFilters.Contains($navigationFilterId)) {
            Write-Host "Filtered out $($child.Paths.Path)"
            continue
        }
        
        # Check level
        if($level -gt $levelTo) {
            Write-host "Leveled out $($child.Paths.Path)"
            continue
        }
        
        # Check navigable template
        $hasTemplate = [Sitecore.Data.Managers.TemplateManager]::GetTemplate($child).InheritsFrom($navigableTemplateId)
        if(!$hasTemplate) {
            Write-Host "Missing template $($child.Paths.Path)"
            continue
        }
        
        $levelItems.Add($child) > $null
        $levelItems.AddRange((Walk-ItemTree -StartItem $child -Level ($level + 1))) > $null
    }
    
    ,$levelItems
}

$listOfItems = [System.Collections.ArrayList]@()
$listOfItems.AddRange((Walk-ItemTree -StartItem $startItem -Level $levelFrom)) > $null

Write-Host "Used Items : $($listOfItems.Count)"
Write-host "Touched Items : $($counter)"