Question 49392 in Photoshop Question posted in
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Photoshop Script Resize Image, does not update the resolution

I have an image when manually resized to width 1000pts the resolution comes to 261.5pixels/inch

Original Image Dimensions

enter image description here

Manual Update width to 1000pts

enter image description here

The resolution downgraded to 261.5 px/in

When i try the same programmatically with js script the width changes but resolution is same as of the original image

JS Code

 document.resizeImage(UnitValue(parseInt(row.width),"pt"), null, null); //working

where row.width = 1000

Image dimensions after executing the js script

enter image description here

How to calculate the resolution of the image automatically and set to 261.5px/inch

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2

Answers


  1. Chosen as BEST ANSWER
    0

    The new resolution should be manually calculated.

    newResolution = document.resolution * (originalWidth / parseInt(row.width));
document.resizeImage(null, null, newResolution, ResampleMethod.NONE);
document.resizeImage(UnitValue(parseInt(row.width), "pt"), null, null);

    If the width is changed, the height will be changed programatically, which caused an impression, ResampleMethod.NONE will set the resolution too.


  2. 0

    Not sure if you want to shrink the image or the canvas. I’ve got with the former.

    Use app.activeDocument.resizeImage with a width, height and resolution of your image.

    resizemeth = ResampleMethod.BICUBIC;
res = 72;
w = 1000;
h = 673;
app.activeDocument.resizeImage(w, h, res, resizemeth);

    Also check what units you are using.

    alert(app.preferences.rulerUnits);

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