Cookie-less image sub-domain in Apache

.htaccess

AddDefaultCharset UTF-8
ServerSignature Off
Options -Indexes
FileETag none

<IfModule mod_headers.c>
	Header unset ETag
	Header unset Cookie
	Header unset Set-Cookie
</IfModule>

<IfModule mod_rewrite.c>
	RewriteEngine On
</IfModule>

<IfModule mod_expires.c>
	ExpiresActive on
</IfModule>

<FilesMatch "\.(ico|jpg|jpeg|jpe|png|gif)$">
	ExpiresDefault "access plus 2 years"
</FilesMatch>

<IfModule mod_expires.c>
	ExpiresByType image/x-icon "access plus 2 years"
	ExpiresByType image/ico "access plus 2 years"
	ExpiresByType image/gif "access plus 2 years"
	ExpiresByType image/jpg "access plus 2 years"
	ExpiresByType image/jpe "access plus 2 years"
	ExpiresByType image/jpeg "access plus 2 years"
	ExpiresByType image/png "access plus 2 years"
</IfModule>

https://wp-mix.com/htaccess-cookie-less-image-domain/