Automated image alt text

Hi there,

Is there any way to stop alt text being added to certain images, which your plugin automatically applies if there is not any alt text? The issue is that there are always a good % of images on a website you do not want to be indexed, as they are not important. Adding alt text to all these unimportant images dilutes the whole seo juice.

I guess if I manually delete the alt text off unimportant images, it will be re-added by you plugin?

Many thanks