I did a search on SNS Resized here is what I found
An easy-to-use tool for batch resizing photos.
How to use it?
Drag and drop photo files or folders with photo files on the application icon.
This application does not require installation. Configuration stored in a executable file name. With SNS-Resizer you can easily resize your photos.
Here are some key features of "SNS-Resizer":
· Best sharpening images.
· Support for multiple image formats (including RAW)
· longer edge,
· shorter edge,
· frame size.
· Quality control of images.
· Can copy metadata (EXIF).
· Can add frame.
· Can add date of the photo.
· Can add watermark.
I Using the small program SNS Resizer (of Sebastian Snibisz). It is standalone but I want integrate it into Photoshop as an action, script or into Filter menu.
Is it possible to do this?
Every thing in that list can be done using Photoshop Scripting you would need to design some sort of user interface for using it. So yes it can be done. Also all in the last can be done by Photoshop Actions with the exception of Copy metadata you need Photoshop scripting to to that. An action can use a script and I have an Exif action the uses a Photoshop script to add a text layer containing so Exif Information. Example
How do I make an action that contains the SNS-Resizer script?
The suggestion was NOT to use this in an action but to either create a script or a mix of action & script that will do the steps that you require instead…