(PowerShell) CanonicalizeUrl

The CanonicalizeUrl method is a utility function that canonicalizes a URL into a standard form to avoid duplicates. For example, "http://www.chilkatsoft.com/" and "http://www.chilkatsoft.com/default.asp" are the same URL.

Chilkat .NET Downloads Chilkat .NET Assemblies

Add-Type -Path "C:\chilkat\ChilkatDotNet47-9.5.0-x64\ChilkatDotNet47.dll"

$spider = New-Object Chilkat.Spider

# Does a DNS lookup to find the default domain, which may or may not include the "www." depending on the DNS results.
# Also domain names are converted to lowercase:
$($spider.CanonicalizeUrl("http://www.ChilkatSoft.com/"))

# CanonicalizeUrl will drop the HTML fragment:
$($spider.CanonicalizeUrl("http://www.chilkatsoft.com/purchase2.asp#buyZip"))

# If a username/password is in the URL, it gets dropped:
$($spider.CanonicalizeUrl("http://username:password@www.chilkatsoft.com/purchase2.asp#buyZip"))

# Port 80 and 443 are dropped:
$($spider.CanonicalizeUrl("http://www.chilkatsoft.com:80/purchase2.asp"))
$($spider.CanonicalizeUrl("https://www.paypal.com:443/"))

# Removes default pages:
# default.asp, index.html, index.htm, default.html, index.htm, default.htm
# index.php, index.asp, default.php, .cfm, .aspx, ,php3, .pl, .cgi, .txt, .shtml, .phtml
$($spider.CanonicalizeUrl("http://www.chilkatsoft.com/index.asp"))
$($spider.CanonicalizeUrl("http://www.chilkatsoft.com/index.asp"))
$($spider.CanonicalizeUrl("http://www.chilkatsoft.com/index.php"))
$($spider.CanonicalizeUrl("http://www.chilkatsoft.com/index.pl"))
$($spider.CanonicalizeUrl("http://www.chilkatsoft.com/index.htm"))

# Output:
# http://chilkatsoft.com/
# http://chilkatsoft.com/purchase2.asp
# http://chilkatsoft.com/purchase2.asp
# http://chilkatsoft.com/purchase2.asp
# https://www.paypal.com/
# http://chilkatsoft.com/
# http://chilkatsoft.com/
# http://chilkatsoft.com/
# http://chilkatsoft.com/
# http://chilkatsoft.com