«How to secure uploads folder in WordPress ?»
«How to avoid people to browse your images from the uploads directory ?»
The uploads directory is where the files of the WordPress library are stored.
Unfortunelty, this directory is not protected. A person who wants to see all your library could list it instantly going to : http://yourwebsite/wp-content/uploads.
This plugin will hide the content by adding an index.php file on the root of your uploads directory or by setting an htaccess which will return a 403 error (Forbidden Access).
Your images and all files stored in the folder «uploads» will work as usual, but nobody will be able to see all the content of this folder in once. It's a good practice to keep safe your content.