When we want to restrict the image access from the browser other than the page, add the below code in htaccess file to apply.
RewriteEngine on
RewriteCond %{HTTP_REFERER} !^http://(www\.)?localhost [NC]
RewriteCond %{HTTP_REFERER} !^http://(www\.)?localhost.*$ [NC]
RewriteRule \.(gif|jpg|png)$ - [F]
localhost need to be replaced by the domain name where the application is hosted.
NOTE: Above code works in Apache (LINUX) not in windows
