: Illustrator: Scale all strokes in a document without touching object and pattern size? I have an illustrator file (actually it's a map) which has lines, polygons and some patterns. I would like

@Kevin459

You can try this:
Open your text editor (the best is ExtendScript Toolkit, installed with Illustrator by default), then past in new document the text below.

//here you can change the stroke percentual
var myA = prompt("Choose your %","80","Change width stroke");
var myPercentile = myA/100;

if(myA!=null){

// choose all page elements
for (var i=0;i<app.activeDocument.pageItems.length;i++){
var myLayer = app.activeDocument.pageItems[i];

//if element is compound make a new loop for pathItems
if(myLayer.typename=="CompoundPathItem"){
for(var u=0;u<myLayer.pathItems.length;u++){

//take actual stroke size
var myPath = myLayer.pathItems[u];
var myMeasure = myPath.strokeWidth;

//transform the stroke width into % choose at start
myPath.strokeWidth = myMeasure*myPercentile;
}

}

if(myLayer.typename=="PathItem"){
var myMeasure = myLayer.strokeWidth;
myLayer.strokeWidth = myMeasure*myPercentile;
}
}
}


Save the doc wherever you want with .jsx extension.
Back in Illustrator and open the file to change, in File menu, choose Script > another script... and choose the file .jsx

Hope it works for you

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@Turnbaugh909

Select one object with a stroke.
Choose Select > Same > Stroke Weight
Enter the value for the stroke you want.
Choose Object > Hide
Repeat until all objects are hidden.
Choose Object > Show All


There is no built in way to independently scale strokes of different weights which I'm aware of.

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