Only downside is that you have to use a certain editor for this to work. You have to insert an image, then resize it. This extension will insert the smaller image as a thumbnail and make it clickable for full size.
I think it would make this the best if it had it's own syntax so you could use your own editor.
Great extension! Thanks!
A real thumbnail is automatically created and stored, so the plugin is also very traffic-friendly.
In addition the developper is very helpful and responsive.
Great plugin, thank you very much!