Create action to put white frame around photos?

Wow.

Thank you for all the replies. I probably should have been more descriptive in my original post.

I have an assortment of photos that I scanned into the computer. They are all jpg's flattened with different aspect ratios. My goal is to create an action that will put a white border around each image with the same width on each side and then close the picture.

I want to use the Image Processor to batch process a whole folder. Its been almost twenty years since I've dealt with actions and automating a process.

I think I cracked the action part except I can't get the action to close the image without bringing up a "save as dialog". I'll keep trying.

Thanks again for the replies!

Layers? Just a Background Layer? 

• reset back- and foreground color (D)

• change Background Layer to a regular Layer

• apply Layer Style Stroke set to »Outside«

• Image > Reveal All 

• Flatten Image 

Edit: But maybe I misunderstood the original post. 

As JJMack wrote, using a relative canvas extension would do the job. If you use a fixed unit such as pixels or CM then you would not need to worry about different aspect ratio's distorting the frame as you are not basing the extension on %. The following example would add a 25 px border around each edge and the result would be consistent no matter the aspect ratio.

Are the input files layered or flattened, or a mix of both? Do all of the input files have a consistent PPI and physical size set in image size?

If you have layered files or a mixture of flattened and layered files, then a conditional action can route the processing as required.

Do you want same stroke width around photo? And to vary width based on image dimensions? It is harder than you think using actions. There isn't option for such thing because aspect ratio is different from what I can understand. You can achieve same stroke width using percentage when recording action for 1:1 aspect ratio but that won't work if you run action on image with 5:3 aspect ratio and you can not use conditional actions to check whether image has 5:3 or 3:2 ratio.

Make sure the documents have a background layer for they does not support transparency. Then record a simple action that add canvas relatively  the same fixed percentage for  current width and height  If the images have a 1:1 aspect ration the canvas added to the top and bottom will be the same size as the canvas added to the left and right sides. You can specify the color of the canvas you want added.