Do you have an entire folder of images that you would like to re-size? or maybe even change from .jpeg to .png?
Here we go.
(just follow the video)
http://www.screencast.com/t/8mNXf3cAP
Written instructions:
Put all the images you would like changed into a folder.
Open Photoshop
Open one of the pictures from the folder
On the right panel select the ACTION image (looks like a play button)
Make a new 'FOLDER' name is: 'CUSTOM'
In that folder make a FILE called: 'RE-SIZE'
Then press 'RECORD'
(From this point on your actions are being 'recorded')
To re-size: Click on 'IMAGE' then 'IMAGE SIZE'
Re-size the image to whatever size you want ALL the pictures to be
To re-name: Click on 'FILE' and then 'SAVE AS' and save it was whatever file ext. you would like (ie- .jpeg, .png, etc.)
Then close your image. Go to 'FILE' and 'CLOSE'
Then press stop on the recording device (right panel)
Go to 'FILE' --> 'AUTOMATE' ---> 'BATCH" ---> pick your sources
Then... GO. All of your files will be re-sized or re-named in front of your eyes.