update hotlinking-prevention

static/.htaccess

@@ -1,11 +1,18 @@
 Header set Access-Control-Allow-Origin: https://oe7drt.com
 Header set Vary: Origin
 
+# Hotlink images prevention
+# rewrite to the `hotlinked.png` image and show this to any
+# hot-linking origin page
+# https://techexpert.tips/apache/apache-prevent-image-hotlinking/
+
 RewriteEngine On
 RewriteCond %{REQUEST_URI} !hotlinked\.png$
 RewriteCond "%{HTTP_REFERER}" "!^$"
 RewriteCond "%{HTTP_REFERER}" "!oe7drt.com" [NC]
-RewriteRule "\.(gif|jpg|png)$"    "https://oe7drt.com/hotlinked.png"   [R,L]
+RewriteRule "\.(gif|jpe?g|png)$"    "https://oe7drt.com/hotlinked.png"   [R,L]
+
+# sends a 403 Forbidden
 
 # SetEnvIf Referer "oe7drt\.com" localreferer
 # SetEnvIf Referer ^$ localreferer