An Action in connection with
File > Automate > Batch
File > Scripts > Image Processor
What do you want to change the sizes to and from what?
Are you familiar with File > Automate > Fit Image? It could be recorded into the Action, but Image Processor might be more convenient anyway.
This looks like what I need, but I never used it before so I'm still figuring this out.
When using Scripts - Image Processor - how do I choose an action I want Photoshop to do - other than what's in the defaults?
Also, the image sizes are not all the same - and I want to change them all to 4inches wide, 300ppi, and I don't care what the height is - it should change the image proportionally and whatever it comes out to be thats the height.
how do I choose an action I want Photoshop to do - other than what's in the defaults?
In the »Run Action« section you should be able to select one of the loaded Actions.
How do I load my own actions I want Photoshop to do, or is it not possible and you can only use the default loaded actions?
One can record Actions, but one can also load Actions from the Actions Panel’s fly-out menu (for example).
Thank you for taking the time to answer me - Great help! Will try it out...