Photoshop Scripting - Batch Convert AI to JPG

Batch Convert AI to JPG

Here is a script I wrote to take your AI illustrator files in a folder and save them as large JPG files and thumbnails.

 
//----------------------------------------------------
// Illustrator to JPG Adobe Photoshop Javascript
// Created by Jaz Witham (Jazzerup)
// 2011
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND
// Script reads all your ai files from a folder and saves them as large JPG files and thumbnails
//----------------------------------------------------
 
 
// This also allows you to simply double click the JSX file
#target photoshop

// Save current dialog preferences
var startDisplayDialogs = app.displayDialogs;
var FILE_TYPE = ".ai"; // The type of files that this script works on -- you can change
var SEARCH_MASK = "*" + FILE_TYPE; // Image file filter to find only those files
 
// Set of exception strings for error handling
var X_NOINPUT = "noInput";
var X_BADDOC = "badDoc";
var X_WERROR = "writeError";
var X_CERROR = "closeError";
 
try {
  // Ask user for input folder
  var inputFolder = Folder.selectDialog("Select the folder with your ai files");
    var outputFolder = Folder.selectDialog("Select the folder to save your jpg files");
  if (inputFolder == null)
  throw X_NOINPUT;
 
var VarPrefRes = prompt("How many megapixels would you like your large files?", 20);  
var VarPrefResSmall = prompt("How many megapixels would you like your thumbnail files?", 1);     
 
function resizeimages(inputFolder,  outputFolder, VarPrefRes, varsize)   {  
    // get all files in the input folder
  var fileList = inputFolder.getFiles(SEARCH_MASK);
 
  // Open each file in turn
  for (var i = 0; i < fileList.length; i++) {
      // Only want to open non-hidden files (and no folders)
    if ((fileList[i] instanceof File) && (fileList[i].hidden == false)) {
 
 
      // Open the file in Photoshop to find out resolution
      var docRef = open( fileList[i]);
      if (docRef == null)
        throw X_BADDOC;
 
                app.preferences.rulerUnits = Units.PIXELS; 
                var docRes = docRef.resolution; 
                var docWidth = docRef.width.value/docRes; 
                var docHeight = docRef.height.value/docRes; 
                var  fname = docRef.name;
 
var varRes =((docHeight * docRes) * (docWidth * docRes))/1000000;  
 
//Ratio for resizing
var resratio = VarPrefRes/varRes;
var newresneeded =  Math.sqrt(VarPrefRes/varRes) * 300;
 
docRef.close(SaveOptions.DONOTSAVECHANGES);
 
        // Set the ruler units to pixels
        var pdfOpenOptions = new PDFOpenOptions
        pdfOpenOptions.antiAlias = true
        pdfOpenOptions.mode = OpenDocumentMode.RGB
        pdfOpenOptions.cropPage = CropToType.MEDIABOX
        pdfOpenOptions.suppressWarnings = true;
        pdfOpenOptions.resolution = newresneeded
        pdfOpenOptions.page = 1
 
        // Open the file in Photoshop
      var docRef = open( fileList[i], pdfOpenOptions );                
 
        //save file
       myNewString = String(outputFolder + "/" + fname + "_" + varsize + ".jpg" );
 
        jpgFile = new File(myNewString)
        jpgSaveOptions = new JPEGSaveOptions()
        jpgSaveOptions.embedColorProfile = true
        jpgSaveOptions.formatOptions = FormatOptions.STANDARDBASELINE
        jpgSaveOptions.matte = MatteType.NONE
        jpgSaveOptions.quality = 12
        app.activeDocument.saveAs(jpgFile, jpgSaveOptions, true,
        Extension.LOWERCASE)
 
        // Close the Photoshop file
      docRef.close(SaveOptions.DONOTSAVECHANGES);
    }
    }
}
 
resizeimages(inputFolder,  outputFolder, VarPrefRes, "lrg")  
resizeimages(inputFolder,  outputFolder, VarPrefResSmall, "thumb")  
 
 
}
catch (exception) {
  // Show debug message and then quit
  alert(exception);
}
finally {
  // Reset app preferences
  app.displayDialogs = startDisplayDialogs;
}