Editing URL redirection (section)

==== Apache HTTP Server mod_rewrite{{anchor|mod_rewrite}} ====
The [[Apache HTTP Server]] mod_alias extension can be used to redirect certain requests. Typical configuration directives look like:
<syntaxhighlight lang="apache">
Redirect permanent /oldpage.html https://www.example.com/newpage.html
Redirect 301 /oldpage.html https://www.example.com/newpage.html
</syntaxhighlight>

For more flexible [[URL rewriting]] and redirection, Apache mod_rewrite can be used. E.g., to redirect a requests to a canonical domain name:
<syntaxhighlight lang="apache">
RewriteEngine on
RewriteCond %{HTTP_HOST} ^([^.:]+\.)*oldsite\.example\.com\.?(:[0-9]*)?$ [NC]
RewriteRule ^(.*)$ https://newsite.example.net/$1 [R=301,L]
</syntaxhighlight>

Such configuration can be applied to one or all sites on the server through the server configuration files or to a single content directory through a <code>[[.htaccess]]</code> file.