I have modified one of these scripts to add a couple of GUI prompts to enter the number of columns and rows, rather than having them hard-coded into the script. Saving as PSD as one can always easily resave as required, or the script code can be modified to JPEG or PNG rather than PSD.
//community.adobe.com/t5/photoshop/dividing-big-document-to-smaller-ones/m-p/9311087
// split image into x times y segments and save them as psds;
// 2017, use it at your own risk;
// 2020 - Modified by Stephen Marsh, adding prompts, save alert, saved doc test.
#target photoshop
/* Start Unsaved Document Error Check - Part A: Try */
unSaved();
function unSaved() {
try {
activeDocument.path;
/* Finish Unsaved Document Error Check - Part A: Try */
/* Main Code Start */
if (app.documents.length > 0) {
var originalUnits = app.preferences.rulerUnits;
app.preferences.rulerUnits = Units.PIXELS;
// document;
var myDocument = app.activeDocument;
var theName = myDocument.name.match(/(.*)\.[^\.]+$/)[1];
var thePath = myDocument.path;
var theCopy = myDocument.duplicate("copy", false);
// Loop the X input prompt until a number is entered
var theXinput;
while (isNaN(theXinput = prompt("Enter a whole number:", "3")));
// Convert decimal input to integer
var theXtoInteger = parseInt(theXinput);
// Final result
var theX = theXtoInteger;
// Loop the Y input prompt until a number is entered
var theYinput;
while (isNaN(theYinput = prompt("Enter a whole number:", "3")));
// Convert decimal input to integer
var theYtoInteger = parseInt(theYinput);
// Final result
var theY = theYtoInteger;
// Canvas Division
var xFrac = myDocument.width / theX;
var yFrac = myDocument.height / theY;
// PSD options;
psdOpts = new PhotoshopSaveOptions();
psdOpts.embedColorProfile = true;
psdOpts.alphaChannels = true;
psdOpts.layers = true;
psdOpts.spotColors = true;
// create folder;
var folderName = thePath + "/" + theName + "_" + theX + "x" + theY;
if (Folder(folderName).exists === false) {
Folder(folderName).create()
}
// save PSD files;
for (var n = 1; n <= theY; n++) {
for (var m = 1; m <= theX; m++) {
cropTo((m - 1) * xFrac, (n - 1) * yFrac, m * xFrac, n * yFrac);
var theNewName = theName + "_" + bufferNumberWithZeros(m, 3) + "_" + bufferNumberWithZeros(n, 3);
theCopy.saveAs((new File(folderName + "/" + "_" + theNewName + ".psd")), psdOpts, true);
theCopy.activeHistoryState = theCopy.historyStates[0];
}
}
theCopy.close(SaveOptions.DONOTSAVECHANGES);
// reset;
app.preferences.rulerUnits = originalUnits;
}
////// buffer number with zeros //////
function bufferNumberWithZeros(number, places) {
var theNumberString = String(number);
for (var o = 0; o < (places - String(number).length); o++) {
theNumberString = String("0" + theNumberString)
}
return theNumberString
}
////// crop //////
function cropTo(x1, y1, x2, y2) {
// =======================================================
var desc7 = new ActionDescriptor();
var desc8 = new ActionDescriptor();
var idPxl = charIDToTypeID("#Pxl");
desc8.putUnitDouble(charIDToTypeID("Top "), idPxl, y1);
desc8.putUnitDouble(charIDToTypeID("Left"), idPxl, x1);
desc8.putUnitDouble(charIDToTypeID("Btom"), idPxl, y2);
desc8.putUnitDouble(charIDToTypeID("Rght"), idPxl, x2);
var idRctn = charIDToTypeID("Rctn");
desc7.putObject(charIDToTypeID("T "), idRctn, desc8);
desc7.putUnitDouble(charIDToTypeID("Angl"), charIDToTypeID("#Ang"), 0.000000);
desc7.putBoolean(charIDToTypeID("Dlt "), false);
desc7.putEnumerated(stringIDToTypeID("cropAspectRatioModeKey"), stringIDToTypeID("cropAspectRatioModeClass"), stringIDToTypeID("pureAspectRatio"));
desc7.putBoolean(charIDToTypeID("CnsP"), false);
executeAction(charIDToTypeID("Crop"), desc7, DialogModes.NO);
}
alert('PSD Files saved to: ' + folderName);
/* Main Code Finish */
/* Start Unsaved Document Error Check - Part B: Catch */
} catch (err) {
alert('An image must be both open and saved before running this script!')
}
}
/* Finish Unsaved Document Error Check - Part B : Catch */
LAST EDITED:
15th May 2020 – Refined the code for the prompts
7th June 2020 – Refined the code for the prompts again!
https://prepression.blogspot.com/2017/11/downloading-and-installing-adobe-scripts.html
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