Adjust and crop scanned images (CD-booklets)

​@Stefan34613976nwfa 

This script worked for batch processing. It saves as PNG, that can be changed in the script, or you Automate > Batch action process or use Image Processor or Image Processor Pro etc. to bulk save other formats from the PNG:

/* https://community.adobe.com/questions%2D712/batch%2Dcrop%2Dstraighten%2D1101051 */

#target Photoshop
app.bringToFront;
var inFolder = Folder.selectDialog("Please select folder to process");
var outfolder = inFolder;
if(inFolder != null){
     var fileList = inFolder.getFiles();
     for(var a = 0 ;a < fileList.length; a++)
     {
          var doc= open(fileList[a]);
          doc.flatten();
          var docname = fileList[a].name.slice(0,-4);
          CropStraighten();
          doc.close(SaveOptions.DONOTSAVECHANGES);
          var count = 1;
          while(app.documents.length)
          {
               var saveFile = new File(decodeURI(outfolder) + "/" + docname +"#"+ zeroPad(count,3) + ".png");
               SavePNG(saveFile);
               activeDocument.close(SaveOptions.DONOTSAVECHANGES);
               count++;
          }
     }
};
function CropStraighten() 
{
     function cTID(s) { return app.charIDToTypeID(s); };
     function sTID(s) { return app.stringIDToTypeID(s); };
     executeAction( sTID('CropPhotosAuto0001'), undefined, DialogModes.NO );
};
function SavePNG(saveFile)
{
    pngSaveOptions = new PNGSaveOptions();
    pngSaveOptions.embedColorProfile = true;
    pngSaveOptions.formatOptions = FormatOptions.STANDARDBASELINE;
    pngSaveOptions.matte = MatteType.NONE;
    pngSaveOptions.quality = 1;
    pngSaveOptions.PNG8 = false; //24 bit PNG
    pngSaveOptions.transparency = true;
    activeDocument.saveAs(saveFile, pngSaveOptions, true, Extension.LOWERCASE);
}
function zeroPad(n, s) 
{
     n = n.toString();
     while (n.length < s) n = '0' + n;
     return n;
};

1. Copy the code text to the clipboard
2. Open a new blank file in a plain-text editor (not in a word processor)
3. Paste the code in
4. Save as a plain text format file – .txt
5. Rename the saved file extension from .txt to .jsx
6. Install or browse to the .jsx file to run (see below):

https://prepression.blogspot.com/2017/11/downloading-and-installing-adobe-scripts.html