Illustrator script: individual layer multiformat export.

Here you go. I added 2 new functions.

• one called "centerArtworkOnArtboard" that takes 2 arguments:
  • You'll want to use this one if you need to maintain consistent artboard sizes throughout all exports.
  • arguments 
    • art: any art item in an illustrator document. pageItem, groupItem, textItem etc.
    • artboard: the artboard object you want to align the artwork to. there will probably only be one of these, but just in case you get fancier down the line, you can still reuse this function if you had a file with multiple artboards

• And another function called "fitArtboardToArt" that takes one argument:
  • This one will leave the art where it is, and instead resize/reposition the artboard so that it fits the artwork. 
  • arguments
    • art: any art item in an illustrator document. pageItem, groupItem, textItem etc.

#target Illustrator

function exportLayersAsNewAiFiles()
{
    var docRef = app.activeDocument;
    var docPath = docRef.fullName;
    var layers = docRef.layers;



    //change this to whatever you want
    var savePath = "~/Desktop/";

    //or if you'd prefer a dialog to select a frolder
    //use this instead
    // var saveFolder = Folder.selectDialog("Select a folder to export your files.");
    // if(!saveFolder)
    // {
    // alert("User cancelled folder select dialog. Exiting.");
    // return;
    // }
    // var savePath = saveFolder.fullName;



    //make sure there actually is a folder to save into
    if (!Folder(savePath).exists)
    {
        Folder(savePath).create();
    }

    //process each layer.
    loopLayers(layers, saveLayerAsAi);



    function loopLayers(layers, func)
    {
        for (var x = 0; x < layers.length; x++)
        {
            func(layers[x]);
        }
    }

    function makeCopyGroup(layer)
    {
        var copyGroup = layer.groupItems.add();
        for (var x = layer.pageItems.length - 1; x >= 1; x--)
        {
            layer.pageItems[x].duplicate(copyGroup);
        }
        return copyGroup;
    }

    function ungroup(group)
    {
        for (var x = group.pageItems.length - 1; x >= 0; x--)
        {
            group.pageItems[x].moveToBeginning(group.parent);
        }

    }


    //assuming you want to maintain the same artboard dimensions for everything
    function centerArtworkOnArtboard(art,artboard)
    {
        var abRect = artboard.artboardRect;
        var abCenter = [(abRect[2]-abRect[0])/2,(abRect[3]+abRect[1])/2];

        art.left = abCenter[0] - art.width/2;
        art.top = abCenter[1] + art.height/2;
    }

    //or use this instead if you want to fit the artboard to the artwork instead
    function fitArtboardToArt(art)
    {
        app.selection = null;
        art.selected = true;
        app.activeDocument.fitArtboardToSelectedArt(0);
    }



    function saveLayerAsAi(layer)
    {
        layer.visible = true;
        layer.locked = false;

        var copyGroup = makeCopyGroup(layer);

        var newDoc = app.documents.add();
        copyGroup.moveToBeginning(newDoc);
        newDoc.layers[0].name = layer.name;

        
        //use this to center the artwork on the existing artboard
        centerArtworkOnArtboard(copyGroup,newDoc.artboards[0]);

        //or use this one instead if you want to resize the artboard
        //to fit the artwork instead
        // fitArtboardToArt(copyGroup);
        

        ungroup(copyGroup);

        // obj2move.position = new Array((actAbBds[2] - actAbBds[0]) / 2 - obj2move.width / 2, (actAbBds[3] - actAbBds[1]) / 2 + obj2move.height / 2);

        newDoc.saveAs(File(savePath + layer.name + ".ai"));
        newDoc.close();
        docRef.activate();

    }
}

if (app.documents.length)
    exportLayersAsNewAiFiles();
else
    alert("Please open a document first.");