Set DPI for JPEG

[Guest]

Hi,

I need to export an AI file to JPG.

For that I am using the File->Export option of Adobe Illustrator.

Now I want to do the same by using JSX Script.

I need Four JPG images of different sizes (70,150, 300,900) .

What Resolution (DPI) should I use to get images of above mentioned sizes.. or how can i dynamically set the DPI while exporting AI to JPEG image file

Thaknks

Harsh

[Muppet Mark]

You can't JPEG export is fixed to 72DPI output… What you need to do is export using the scale factors to get the required number of pixels…

[Guest]

Hi Mark,

Thanks for instant reply...

can you please share me the code block if you have it...

I am using the following code:

Code

function artboardToJPGs(size) { /*        var    win = new Window ("window", "Save NGC", undefined, {borderless: true})         win.pnl = win.add("panel", [10, 10, 170, 60], "Please Wait");         win.pnl.progBarLabel = win.pnl.add("statictext", [6, 5, 150, 55], "Creating JPEG: "+size+'x'+size);         win.show ();         */         var idx, j, sizes, jpegOpt, doc, docName, dF, artBds, abName, scale, jpgFile, destinationFolder, originalImage;         jpegOpt = new ExportOptionsJPEG();         jpegOpt.Optimization = true;         jpegOpt.QualitySetting = 100;         jpegOpt.blurAmount=0;         jpegOpt.artBoardClipping=true;         dF=new Folder(Folder.desktop+'/AI Artboard PNGs');         if ( !dF.exists ) dF.create();         doc = app.activeDocument;         docName=doc.name;         artBds = doc.artboards;         idx = artBds.getActiveArtboardIndex();         abName = artBds[ idx ].name;            var w= artBds[ idx ].artboardRect[2] - artBds[ idx ].artboardRect[0] ;            var h=artBds[ idx ].artboardRect[1] - artBds[ idx ].artboardRect[3];             var width=  100+ ( (size - w)/w ) * 100;             var height=  100+ ( ( size - h )/h ) * 100;             jpgFile = File( dF.fsName + '/harsh_' + size + 'x' + size + '.jpg' );             //jpegOpt.horizontalScale =width;            // jpegOpt.verticalScale = height;             doc.exportFile( jpgFile, ExportType.JPEG ,jpegOpt );         //    win.close();            var autoFile = File( jpgFile.fsName.replace( /\s/g,  '-' ) );             if ( autoFile.exists ) {         $.writeln( 'File Created ' );         autoFile.rename(  jpgFile.name.replace( '-', ' ' ) );         }           alert('done'); }

[Muppet Mark]

Add the lines… Where 300 is your required DPI

jpegOpt.horizontalScale = ( 300 / 72 ) * 100;

jpegOpt.verticalScale = ( 300 / 72 ) * 100;