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Is it possible to change the page size of a page in inDesign using extend script?

Engaged ,
Feb 16, 2023 Feb 16, 2023

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I'm trying to change the dimensions of the second page in my indesign document so it's a custom size, but not having any luck. Is it even possible. What would be the method?

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Community Expert , Feb 16, 2023 Feb 16, 2023

Hi @davidn5918184 , Look at the page resize() method:

https://www.indesignjs.de/extendscriptAPI/indesign-latest/#Page.html#d1e203601__d1e205188

 

 

var p = app.activeDocument.pages[1],
w = 400,
h = 700;

//the resize method expects points unless you set the 6th parameter to true, which uses ruler units
p.resize (CoordinateSpaces.INNER_COORDINATES,AnchorPoint.CENTER_ANCHOR,ResizeMethods.REPLACING_CURRENT_DIMENSIONS_WITH,[w,h])

 

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Community Expert ,
Feb 16, 2023 Feb 16, 2023

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Hi @davidn5918184 , Look at the page resize() method:

https://www.indesignjs.de/extendscriptAPI/indesign-latest/#Page.html#d1e203601__d1e205188

 

 

var p = app.activeDocument.pages[1],
w = 400,
h = 700;

//the resize method expects points unless you set the 6th parameter to true, which uses ruler units
p.resize (CoordinateSpaces.INNER_COORDINATES,AnchorPoint.CENTER_ANCHOR,ResizeMethods.REPLACING_CURRENT_DIMENSIONS_WITH,[w,h])

 

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Engaged ,
Feb 16, 2023 Feb 16, 2023

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Awesome, thank you!

 

var secondPage = app.activeDocument.pages[1];
var newWidth = 1080;
var newHeight = 1920;

// Resize the second page
secondPage.resize(CoordinateSpaces.INNER_COORDINATES, AnchorPoint.CENTER_ANCHOR, ResizeMethods.REPLACING_CURRENT_DIMENSIONS_WITH, [newWidth, newHeight], true);

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Community Beginner ,
Mar 05, 2024 Mar 05, 2024

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Hello @rob day

I recently tried to do the same operation, but the values are still treated as points by InDesign. However, the ruler units are already in millimeters. Do you have an idea?

 

 

app.activeDocument.viewPreferences.rulerOrigin = RulerOrigin.PAGE_ORIGIN;
var W = 210;
var H = 297;
var Var_1 = CoordinateSpaces.INNER_COORDINATES;
var Var_2 = AnchorPoint.TOP_LEFT_ANCHOR;
var Var_3 = ResizeMethods.REPLACING_CURRENT_DIMENSIONS_WITH;
Masters[2].pages[0].layoutRule = LayoutRuleOptions.OFF;
Masters[2].pages[0].resize(Var_1, Var_2, Var_3, [W, H], false, true);

 

 

 

 
 

 

 

 
 

 

 

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Community Expert ,
Mar 05, 2024 Mar 05, 2024

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Not sure. There is this from the indesignjs.de page, which seems to imply the parameter might not work for page resizing—parameter has no effect unless the reference point is specified relative to a page

 

You might have to convert points to MM, something like this:

 

var p = app.activeDocument.pages[0]
w = 210
h = 297
var m = 2.834646
p.resize (CoordinateSpaces.INNER_COORDINATES, AnchorPoint.CENTER_ANCHOR, ResizeMethods.REPLACING_CURRENT_DIMENSIONS_WITH,[w*m,h*m])

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Community Expert ,
Mar 05, 2024 Mar 05, 2024

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It's probablymore straightforward to use UnitValue:

UnitValue(297,'mm').as('pt');

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Engaged ,
Mar 05, 2024 Mar 05, 2024

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Well dang, yeah that's convenient. 

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Engaged ,
Mar 05, 2024 Mar 05, 2024

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You can also set your script preferences. 

app.scriptPreferences.measurementUnit = MeasurementUnits.POINTS;

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Community Expert ,
Mar 05, 2024 Mar 05, 2024

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Hi @davidn5918184 , I think @Ralph S. wants the new page dimensions to be resized to 210 x 297 millimeters not points. The resize() method uses points even when I set the scripting preferencs to millimeters. The 6th paramter, consideringRulerUnits, doesn‘t seem to work when the resize object is a page.

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Community Beginner ,
Mar 05, 2024 Mar 05, 2024

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Yes. Indeed, this statement from the API seems inaccurate: If true then a ruler location is interpreted using ruler units rather than points. Thank you for taking a look.

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Guide ,
Mar 14, 2024 Mar 14, 2024

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quote

(…) The 6th paramter, consideringRulerUnits, doesn‘t seem to work when the resize object is a page.

 

The parameter consideringRulerUnits (in every method that supports it) only concerns the location or origin of the transformation (cf. Syntax of a Location), that is, the from parameter in the case of the resize() method.

 

Best,

Marc

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Engaged ,
Mar 05, 2024 Mar 05, 2024

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Maybe if the resize() method only uses points you could convert. So 72 points in an inch, 25.4mm in an inch, 72/25.4 = 2.834646. You could try Var W = 210; Var H = 297; Var P =2.834646; and then convert Var WP = W * P, and Var WH = H * P.  

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Community Beginner ,
Mar 14, 2024 Mar 14, 2024

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I used UnitValue as @Peter Kahrel advised and it works well. I notice that resized pages lose vertical alignment with adjacent pages from the same spread. The origin point is set to SPREAD_ORIGIN. The bounds property of the page object is read-only. How can I realign these pages to 0, or better, avoid this shift?

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Community Expert ,
Mar 14, 2024 Mar 14, 2024

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Have you tried setting the AnchorPoint to TOP_CENTER_ANCHOR?

 

CENTER_ANCHOR:

 

Screen Shot 10.png

 

TOP_CENTER_ANCHOR:

 

Screen Shot 11.png

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Community Beginner ,
Mar 18, 2024 Mar 18, 2024

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The problem seems solved with CENTER_ANCHOR.

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