When uploading an image in WordPress, there is the option to generate a thumbnail image.
At first glance, this seems to work adding "_01.jpg" to the file name to enable this to be linked in a post or page.
However, when I view the page with this link to the image, the image is the full sized, rather than the thumbnail generated version.
Should there be something else that I need to enable on my server for the thumbnail generation to work correctly?
Any help would be appreciated.