There may be a simpler "fit image" script out there, however this was the first one I found, an edit by the late Mike Hale. I just grafted it onto the end of my original script. Enter the same target pixel size into both fields and the longer edge will be resized to the target value, with the shorter edge proportionally scaling.
#target photoshop
// Dupe Original File with -Suffix.jsx
var origDoc = app.activeDocument
var baseName = origDoc.name.replace(/\.[^\.]+$/, '');
var sep = String ("-");
var suffix = prompt("Enter Suffix:", "");
var dupeName = baseName + sep + suffix;
origDoc.duplicate((dupeName), true);
app.activeDocument.flatten();
// Optional Step: remove the // comment characters to enable
// origDoc.close(SaveOptions.DONOTSAVECHANGES); // (SaveOptions.SAVECHANGES)
// c2008 Adobe Systems, Inc. All rights reserved.
// Written by Ed Rose
// based on the ADM Fit Image by Charles A. McBrian from 1997
// edited by Mike Hale added option to avoid resize on images already smaller than target size
/*
@@@BUILDINFO@@@ Fit Image.jsx 1.0.0.21
*/
/* Special properties for a JavaScript to enable it to behave like an automation plug-in, the variable name must be exactly
as the following example and the variables must be defined in the top 1000 characters of the file
// BEGIN__HARVEST_EXCEPTION_ZSTRING
<javascriptresource>
<name>$$$/JavaScripts/FitImage/Name=Fit Image...</name>
<menu>automate</menu>
<enableinfo>true</enableinfo>
<eventid>3caa3434-cb67-11d1-bc43-0060b0a13dc4</eventid>
<terminology><![CDATA[<< /Version 1
/Events <<
/3caa3434-cb67-11d1-bc43-0060b0a13dc4 [($$$/AdobePlugin/FitImage/Name=Fit Image) /imageReference <<
/width [($$$/AdobePlugin/FitImage/Width=width) /pixelsUnit]
/height [($$$/AdobePlugin/FitImage/Height=height) /pixelsUnit]
/limit [($$$/AdobePlugin/FitImage/limit=Don't Enlarge) /boolean]
>>]
>>
>> ]]></terminology>
</javascriptresource>
// END__HARVEST_EXCEPTION_ZSTRING
*/
// enable double clicking from the Macintosh Finder or the Windows Explorer
#target photoshop
// debug level: 0-2 (0:disable, 1:break on error, 2:break at beginning)
// $.level = 2;
// debugger; // launch debugger on next line
// on localized builds we pull the $$$/Strings from a .dat file, see documentation for more details
$.localize = true;
var isCancelled = true; // assume cancelled until actual resize occurs
// the main routine
// the FitImage object does most of the work
try {
// create our default params
var sizeInfo = new SizeInfo();
GlobalVariables();
CheckVersion();
var gIP = new FitImage();
if ( DialogModes.ALL == app.playbackDisplayDialogs ) {
gIP.CreateDialog();
gIP.RunDialog();
}
else {
gIP.InitVariables();
ResizeTheImage(sizeInfo.width.value, sizeInfo.height.value);
}
if (!isCancelled) {
SaveOffParameters(sizeInfo);
}
}
// Lot's of things can go wrong
// Give a generic alert and see if they want the details
catch( e ) {
if ( DialogModes.NO != app.playbackDisplayDialogs ) {
alert( e + " : " + e.line );
}
}
// restore the dialog modes
app.displayDialogs = gSaveDialogMode;
isCancelled ? 'cancel' : undefined;
//////////////////////////////////////////////////////////////
//////////////////////////////////////////////////////////////
//////////////////////////////////////////////////////////////
//////////////////////////////////////////////////////////////
function ResizeTheImage(width, height) {
var oldPref = app.preferences.rulerUnits;
var docWidth;
var docHeight;
var docRatio;
var newWidth;
var newHeight;
var resolution = app.activeDocument.resolution;
var limit = sizeInfo.limit;
app.preferences.rulerUnits = Units.PIXELS; // save old preferences
// original width, height
docWidth = (1.0 * app.activeDocument.width * resolution) / 72.0; // decimal inches assuming 72 dpi (used in docRatio)
docHeight = (1.0 * app.activeDocument.height * resolution) / 72.0; // ditto
if (docWidth < 1.0 || docHeight < 1.0)
return true; // error
if (width < 1 || height < 1)
return true; // error
if ( limit && ( app.activeDocument.width.as('px') <= width && app.activeDocument.height.as('px') <= height ) ){
app.preferences.rulerUnits = oldPref; // restore old prefs
isCancelled = false; // if get here, definitely executed
return false; // no error
}
docRatio = docWidth / docHeight; // decimal ratio of original width/height
newWidth = width;
newHeight = ((1.0 * width) / docRatio); // decimal calc
if (newHeight > height) {
newWidth = docRatio * height; // decimal calc
newHeight = height;
}
// resize the image using a good conversion method while keeping the pixel resolution
// and the aspect ratio the same
app.activeDocument.resizeImage(newWidth, newHeight, resolution, ResampleMethod.BICUBIC);
app.preferences.rulerUnits = oldPref; // restore old prefs
isCancelled = false; // if get here, definitely executed
return false; // no error
}
// created in
function SaveOffParameters(sizeInfo) {
// save off our last run parameters
var d = objectToDescriptor(sizeInfo, strMessage);
app.putCustomOptions("3caa3434-cb67-11d1-bc43-0060b0a13dc4", d);
app.playbackDisplayDialogs = DialogModes.ALL;
// save off another copy so Photoshop can track them corectly
var dd = objectToDescriptor(sizeInfo, strMessage);
app.playbackParameters = dd;
}
function GlobalVariables() {
// a version for possible expansion issues
gVersion = 1.1;
gMaxResize = 300000;
// remember the dialog modes
gSaveDialogMode = app.displayDialogs;
app.displayDialogs = DialogModes.NO;
gInAlert = false;
// all the strings that need to be localized
strTitle = localize( "$$$/JavaScript/FitImage/Title=Fit Image" );
strConstrainWithin = localize( "$$$/JavaScript/FitImage/ConstrainWithin=Constrain Within" );
strTextWidth = localize("$$$/JavaScripts/FitImage/Width=&Width:");
strTextHeight = localize("$$$/JavaScripts/FitImage/Height=&Height:");
strTextPixels = localize("$$$/JavaScripts/FitImage/Pixels=pixels");
strButtonOK = localize("$$$/JavaScripts/FitImage/OK=OK");
strButtonCancel = localize("$$$/JavaScripts/FitImage/Cancel=Cancel");
strTextSorry = localize("$$$/JavaScripts/FitImage/Sorry=Sorry, Dialog failed");
strTextInvalidType = localize("$$$/JavaScripts/FitImage/InvalidType=Invalid numeric value");
strTextInvalidNum = localize("$$$/JavaScripts/FitImage/InvalidNum=A number between 1 and 300000 is required. Closest value inserted.");
strTextNeedFile = localize("$$$/JavaScripts/FitImage/NeedFile=You must have a file selected before using Fit Image");
strMessage = localize("$$$/JavaScripts/FitImage/Message=Fit Image action settings");
strMustUse = localize( "$$$/JavaScripts/ImageProcessor/MustUse=You must use Photoshop CS 2 or later to run this script!" );
strLimitResize = localize("$$$/JavaScripts/FitImage/Limit=Don^}t Enlarge");
}
// the main class
function FitImage() {
this.CreateDialog = function() {
// I will keep most of the important dialog items at the same level
// and use auto layout
// use overriding group so OK/Cancel buttons placed to right of panel
var res =
"dialog { \
pAndB: Group { orientation: 'row', \
info: Panel { orientation: 'column', borderStyle: 'sunken', \
text: '" + strConstrainWithin +"', \
w: Group { orientation: 'row', alignment: 'right',\
s: StaticText { text:'" + strTextWidth +"' }, \
e: EditText { preferredSize: [70, 20] }, \
p: StaticText { text:'" + strTextPixels + "'} \
}, \
h: Group { orientation: 'row', alignment: 'right', \
s: StaticText { text:'" + strTextHeight + "' }, \
e: EditText { preferredSize: [70, 20] }, \
p: StaticText { text:'" + strTextPixels + "'} \
}, \
l: Group { orientation: 'row', alignment: 'left', \
c:Checkbox { text: '" + strLimitResize + "', value: false }, \
} \
}, \
buttons: Group { orientation: 'column', alignment: 'top', \
okBtn: Button { text:'" + strButtonOK +"', properties:{name:'ok'} }, \
cancelBtn: Button { text:'" + strButtonCancel + "', properties:{name:'cancel'} } \
} \
} \
}";
// the following, when placed after e: in w and h doesn't show up
// this seems to be OK since px is put inside the dialog box
//p: StaticText { text:'" + strTextPixels + "'}
// create the main dialog window, this holds all our data
this.dlgMain = new Window(res,strTitle);
// create a shortcut for easier typing
var d = this.dlgMain;
// match our dialog background color to the host application
d.graphics.backgroundColor = d.graphics.newBrush (d.graphics.BrushType.THEME_COLOR, "appDialogBackground");
d.defaultElement = d.pAndB.buttons.okBtn;
d.cancelElement = d.pAndB.buttons.cancelBtn;
} // end of CreateDialog
// initialize variables of dialog
this.InitVariables = function() {
var oldPref = app.preferences.rulerUnits;
app.preferences.rulerUnits = Units.PIXELS;
// look for last used params via Photoshop registry, getCustomOptions will throw if none exist
try {
var desc = app.getCustomOptions("3caa3434-cb67-11d1-bc43-0060b0a13dc4");
descriptorToObject(sizeInfo, desc, strMessage);
}
catch(e) {
// it's ok if we don't have any options, continue with defaults
}
// see if I am getting descriptor parameters
var fromAction = !!app.playbackParameters.count;
if( fromAction ){
// reset sizeInfo to defaults
SizeInfo = new SizeInfo();
// set the playback options to sizeInfo
descriptorToObject(sizeInfo, app.playbackParameters, strMessage);
}
// make sure got parameters before this
if (app.documents.length <= 0) // count of documents viewed
{
if ( DialogModes.NO != app.playbackDisplayDialogs ) {
alert(strTextNeedFile); // only put up dialog if permitted
}
app.preferences.rulerUnits = oldPref;
return false; // if no docs, always return
}
var w = app.activeDocument.width;
var h = app.activeDocument.height;
var l = true;
if (sizeInfo.width.value == 0) {
sizeInfo.width = w;
}
else {
w = sizeInfo.width;
}
if (sizeInfo.height.value == 0) {
sizeInfo.height = h;
}
else {
h = sizeInfo.height;
}
app.preferences.rulerUnits = oldPref;
if ( DialogModes.ALL == app.playbackDisplayDialogs ) {
var d = this.dlgMain;
d.ip = this;
d.pAndB.info.w.e.text = Number(w);
d.pAndB.info.h.e.text = Number(h);
d.pAndB.info.l.c.value = sizeInfo.limit;
}
return true;
}
// routine for running the dialog and it's interactions
this.RunDialog = function () {
var d = this.dlgMain;
// in case hit cancel button, don't close
d.pAndB.buttons.cancelBtn.onClick = function() {
var dToCancel = FindDialog( this );
dToCancel.close( false );
}
// nothing for now
d.onShow = function() {
}
// do not allow anything except for numbers 0-9
d.pAndB.info.w.e.addEventListener ('keydown', NumericEditKeyboardHandler);
// do not allow anything except for numbers 0-9
d.pAndB.info.h.e.addEventListener ('keydown', NumericEditKeyboardHandler);
// hit OK, do resize
d.pAndB.buttons.okBtn.onClick = function () {
if (gInAlert == true) {
gInAlert = false;
return;
}
var wText = d.pAndB.info.w.e.text;
var hText = d.pAndB.info.h.e.text;
var lValue = d.pAndB.info.l.c.value;
var w = Number(wText);
var h = Number(hText);
sizeInfo.limit = Boolean(lValue);
var inputErr = false;
if ( isNaN( w ) || isNaN( h ) ) {
if ( DialogModes.NO != app.playbackDisplayDialogs ) {
alert( strTextInvalidType );
}
if (isNaN( w )) {
sizeInfo.width = new UnitValue( 1, "px" );
d.pAndB.info.w.e.text = 1;
} else {
sizeInfo.height = new UnitValue( 1, "px" );
d.pAndB.info.h.e.text = 1;
}
return false;
}
else if (w < 1 || w > gMaxResize || h < 1 || h > gMaxResize) {
if ( DialogModes.NO != app.playbackDisplayDialogs ) {
gInAlert = true;
alert( strTextInvalidNum );
}
}
if ( w < 1) {
inputErr = true;
sizeInfo.width = new UnitValue( 1, "px" );
d.pAndB.info.w.e.text = 1;
}
if ( w > gMaxResize) {
inputErr = true;
sizeInfo.width = new UnitValue( gMaxResize, "px" );
d.pAndB.info.w.e.text = gMaxResize;
}
if ( h < 1) {
inputErr = true;
sizeInfo.height = new UnitValue( 1, "px" );
d.pAndB.info.h.e.text = 1;
}
if ( h > gMaxResize) {
inputErr = true;
sizeInfo.height = new UnitValue( gMaxResize, "px" );
d.pAndB.info.h.e.text = gMaxResize;
}
if (inputErr == false) {
sizeInfo.width = new UnitValue( w, "px" );
sizeInfo.height = new UnitValue( h, "px" );
if (ResizeTheImage(w, h)) { // the whole point
// error, input or output size too small
}
d.close(true);
}
return;
}
if (!this.InitVariables())
{
return true; // handled it
}
// give the hosting app the focus before showing the dialog
app.bringToFront();
this.dlgMain.center();
return d.show();
}
}
function CheckVersion() {
var numberArray = version.split(".");
if ( numberArray[0] < 9 ) {
if ( DialogModes.NO != app.playbackDisplayDialogs ) {
alert( strMustUse );
}
throw( strMustUse );
}
}
function FindDialog( inItem ) {
var w = inItem;
while ( 'dialog' != w.type ) {
if ( undefined == w.parent ) {
w = null;
break;
}
w = w.parent;
}
return w;
}
///////////////////////////////////////////////////////////////////////////////
// Function: objectToDescriptor
// Usage: create an ActionDescriptor from a JavaScript Object
// Input: JavaScript Object (o)
// object unique string (s)
// Pre process converter (f)
// Return: ActionDescriptor
// NOTE: Only boolean, string, number and UnitValue are supported, use a pre processor
// to convert (f) other types to one of these forms.
// REUSE: This routine is used in other scripts. Please update those if you
// modify. I am not using include or eval statements as I want these
// scripts self contained.
///////////////////////////////////////////////////////////////////////////////
function objectToDescriptor (o, s, f) {
if (undefined != f) {
o = f(o);
}
var d = new ActionDescriptor;
var l = o.reflect.properties.length;
d.putString( app.charIDToTypeID( 'Msge' ), s );
for (var i = 0; i < l; i++ ) {
var k = o.reflect.properties.toString();
if (k == "__proto__" || k == "__count__" || k == "__class__" || k == "reflect")
continue;
var v = o[ k ];
k = app.stringIDToTypeID(k);
switch ( typeof(v) ) {
case "boolean":
d.putBoolean(k, v);
break;
case "string":
d.putString(k, v);
break;
case "number":
d.putDouble(k, v);
break;
default:
{
if ( v instanceof UnitValue ) {
var uc = new Object;
uc["px"] = charIDToTypeID("#Pxl"); // pixelsUnit
uc["%"] = charIDToTypeID("#Prc"); // unitPercent
d.putUnitDouble(k, uc[v.type], v.value);
} else {
throw( new Error("Unsupported type in objectToDescriptor " + typeof(v) ) );
}
}
}
}
return d;
}
///////////////////////////////////////////////////////////////////////////////
// Function: descriptorToObject
// Usage: update a JavaScript Object from an ActionDescriptor
// Input: JavaScript Object (o), current object to update (output)
// Photoshop ActionDescriptor (d), descriptor to pull new params for object from
// object unique string (s)
// JavaScript Function (f), post process converter utility to convert
// Return: Nothing, update is applied to passed in JavaScript Object (o)
// NOTE: Only boolean, string, number and UnitValue are supported, use a post processor
// to convert (f) other types to one of these forms.
// REUSE: This routine is used in other scripts. Please update those if you
// modify. I am not using include or eval statements as I want these
// scripts self contained.
///////////////////////////////////////////////////////////////////////////////
function descriptorToObject (o, d, s, f) {
var l = d.count;
if (l) {
var keyMessage = app.charIDToTypeID( 'Msge' );
if ( d.hasKey(keyMessage) && ( s != d.getString(keyMessage) )) return;
}
for (var i = 0; i < l; i++ ) {
var k = d.getKey(i); // i + 1 ?
var t = d.getType(k);
strk = app.typeIDToStringID(k);
switch (t) {
case DescValueType.BOOLEANTYPE:
o[strk] = d.getBoolean(k);
break;
case DescValueType.STRINGTYPE:
o[strk] = d.getString(k);
break;
case DescValueType.DOUBLETYPE:
o[strk] = d.getDouble(k);
break;
case DescValueType.UNITDOUBLE:
{
var uc = new Object;
uc[charIDToTypeID("#Rlt")] = "px"; // unitDistance
uc[charIDToTypeID("#Prc")] = "%"; // unitPercent
uc[charIDToTypeID("#Pxl")] = "px"; // unitPixels
var ut = d.getUnitDoubleType(k);
var uv = d.getUnitDoubleValue(k);
o[strk] = new UnitValue( uv, uc[ut] );
}
break;
case DescValueType.INTEGERTYPE:
case DescValueType.ALIASTYPE:
case DescValueType.CLASSTYPE:
case DescValueType.ENUMERATEDTYPE:
case DescValueType.LISTTYPE:
case DescValueType.OBJECTTYPE:
case DescValueType.RAWTYPE:
case DescValueType.REFERENCETYPE:
default:
throw( new Error("Unsupported type in descriptorToObject " + t ) );
}
}
if (undefined != f) {
o = f(o);
}
}
///////////////////////////////////////////////////////////////////////////////
// Function: SizeInfo
// Usage: object for holding the dialog parameters
// Input: <none>
// Return: object holding the size info
///////////////////////////////////////////////////////////////////////////////
function SizeInfo() {
this.height = new UnitValue( 0, "px" );
this.width = new UnitValue( 0, "px" );
this.limit = false;
}
///////////////////////////////////////////////////////////////////////////////
// Function: NumericEditKeyboardHandler
// Usage: Do not allow anything except for numbers 0-9
// Input: ScriptUI keydown event
// Return: <nothing> key is rejected and beep is sounded if invalid
///////////////////////////////////////////////////////////////////////////////
function NumericEditKeyboardHandler (event) {
try {
var keyIsOK = KeyIsNumeric (event) ||
KeyIsDelete (event) ||
KeyIsLRArrow (event) ||
KeyIsTabEnterEscape (event);
if (! keyIsOK) {
// Bad input: tell ScriptUI not to accept the keydown event
event.preventDefault();
/* Notify user of invalid input: make sure NOT
to put up an alert dialog or do anything which
requires user interaction, because that
interferes with preventing the 'default'
action for the keydown event */
app.beep();
}
}
catch (e) {
; // alert ("Ack! bug in NumericEditKeyboardHandler: " + e);
}
}
// key identifier functions
function KeyHasModifier (event) {
return event.shiftKey || event.ctrlKey || event.altKey || event.metaKey;
}
function KeyIsNumeric (event) {
return (event.keyName >= '0') && (event.keyName <= '9') && ! KeyHasModifier (event);
}
function KeyIsDelete (event) {
// Shift-delete is ok
return ((event.keyName == 'Backspace') || (event.keyName == 'Delete')) && ! (event.ctrlKey);
}
function KeyIsLRArrow (event) {
return ((event.keyName == 'Left') || (event.keyName == 'Right')) && ! (event.altKey || event.metaKey);
}
function KeyIsTabEnterEscape (event) {
return event.keyName == 'Tab' || event.keyName == 'Enter' || event.keyName == 'Escape';
}
// End Fit Image.jsx
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