Batch Resize with different height/width

[mysti8u]

I regularly have 200-300 photos that I open canvas size and make the lesser number (width or height) match the larger number (width or height) so that I have a square. The background color is white so that is the color that fills in the extra space (top/bottom OR sides). Then I do a save for web with my settings and change the size to 600 x 600 pixels. This part I know I can make into an action, that easy. What I am tying to figure out is how to make a batch resize that will resize each picture so both dimensions are the largest measurement whether its the width or the height so that it is a square. Is there a script or something hidden that Im not aware of to do this?

[JJMack · Accepted solution]

To make document square you need to make a centered 1:1 aspect ratio crop or Add canvas to add empty side or top and bottom borders to make the document 1:1. You would need as script to do things like that. You could record using the script in an action and batch that action.   The center 1:1 crop would be easy to do using my AspectRatioSelection. Plug-in script that is ins my crafting actions package. I would batch the action using Image Processor Pro Plug-in found on the web.

Crafting Actions Package UPDATED Aug 10, 2014 Added Conditional Action steps to Action Palette Tips.
Contains

• Action Actions Palette Tips.txt
• Action Creation Guidelines.txt
• Action Dealing with Image Size.txt
• Action Enhanced via Scripted Photoshop Functions.txt
• CraftedActions.atn Sample Action set includes an example Watermarking action
• Sample Actions.txt Photoshop CraftedActions set saved as a text file.
• More then a dozen Scripts for use in actions

Example
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