Posted Under : OpenCart
If you have a store with large no of products and categories then I am sure that you are facing issue with website speed.
To increase Massive speed you have to some database level changes.
define(‘HTTP_IMAGE’, ‘http://image.yoursite.com/’); or
There is lots of other technique use by professional OpenCart Development Company. You can also take a support from this company
You can use some existing extension available in market or develop your own extension by Web Development Company.