诸位有没有遇到明明100px的图片有几百M，
在者一个800-800px的psd文件里面就三个图层竟然有几个G的情况
我遇到过 :@(尴尬) 前几天在网上偶然看到了解决方案顺便就分享下

PSD源文件过大解决方案：

/**
 * @author Jason
 * @email jiangran@126.com
 * @name PsDeepCleaner
 * @description photoshop metadata deep clean script
 */

function test(){
    alert(app.activeDocument.layers.length);
    alert(app.activeDocument.layers[2]);
    alert(documents.length);
    alert(app.activeDocument.layers[2].kind);

    app.activeDocument.activeLayer = app.activeDocument.layers[0];
    var idplacedLayerEditContents = stringIDToTypeID("placedLayerEditContents");
    var actionDescriptor = new ActionDescriptor();
    executeAction(idplacedLayerEditContents, actionDescriptor, DialogModes.NO);
    alert(app.activeDocument);
}

function deleteDocumentAncestorsMetadata() {
    if(String(app.name).search("Photoshop") > 0) {

        if(!documents.length) {
            alert("There are no open documents. Please open a file to run this script.")
            return;
        }

        if (ExternalObject.AdobeXMPScript == undefined) ExternalObject.AdobeXMPScript = new ExternalObject("lib:AdobeXMPScript");

        var xmp = new XMPMeta( activeDocument.xmpMetadata.rawData);
        xmp.deleteProperty(XMPConst.NS_PHOTOSHOP, "DocumentAncestors");
        app.activeDocument.xmpMetadata.rawData = xmp.serialize();

        clearDocumentAncestorsForAllLayers(app.activeDocument);

        if (app.activeDocument !== mainDocument) {
            app.activeDocument.close(SaveOptions.SAVECHANGES);
        }else{
            app.activeDocument.save();
        }
    }
}

function clearDocumentAncestorsForAllLayers(doc) {
    try {

        if (doc == undefined) {
            return;
        }

        for (var i = 0; i < doc.layers.length; i++) {
            var curLayer = doc.layers[i];
            if (curLayer.typename != "ArtLayer") {
                clearDocumentAncestorsForAllLayers(curLayer);
                continue;
            }

            if (curLayer.kind == "LayerKind.SMARTOBJECT") {

                app.activeDocument.activeLayer = curLayer;
                
                var idplacedLayerEditContents = stringIDToTypeID("placedLayerEditContents");
                var actionDescriptor = new ActionDescriptor();
                executeAction(idplacedLayerEditContents, actionDescriptor, DialogModes.NO);

                if(app.activeDocument.activeLayer == curLayer){
                    // open fail, maybe this layer is AI, ignore.
                    //alert("open fail,activeLayer="+app.activeDocument.activeLayer+";curLayer:"+curLayer)
                    continue;
                }
                deleteDocumentAncestorsMetadata()
                layerSetStr += ("\n"+curLayer.name)
                // var xmp = new XMPMeta(activeDocument.xmpMetadata.rawData);
                // xmp.deleteProperty(XMPConst.NS_PHOTOSHOP, "DocumentAncestors");
                // app.activeDocument.xmpMetadata.rawData = xmp.serialize();

                // deleteDocumentAncestorsMetadataByInnerLayer();

            }
        }
    } catch (e) {
        alert("Layer clean fail.name="+doc+";e="+e)
    }
}

function deleteDocumentAncestorsMetadataByInnerLayer() {
    clearDocumentAncestorsForAllLayers(app.activeDocument);
}

function recurArtLayer(layers){

    for(var i=0; i<layers.length; i++){
        //alert(layers[i]+"--"+layers[i].kind)

        if(layers[i].grouped!=false){
            recurArtLayer(layers[i].linkedLayers);
            alert(layers[i]+":"+layers[i].linkedLayers)
        }else if(layers[i].kind=="LayerKind.SMARTOBJECT"){
            alert(layers[i]+"--"+layers[i].kind)
            deleteArtLayerAncestorsMetadata(layers[i])
        }
    }
}

var layerSetStr = "";
var mainDocument = app.activeDocument;
function start(){
    deleteDocumentAncestorsMetadata();
    alert("Clean finished.\n[doc name]:"+mainDocument.name+"\n[layer set]:"+layerSetStr);
}
try{
    if(confirm("Start to clean?")){
        // test();
        start();
    }
} catch (e) {
    alert("Task execute fail.e="+e)
}

新建一个文本文档，然后复制上述代码，保存后修改.txt 后缀为.jsx。
也可以直接下载我打包好的文件psCleaner.zip

使用方法：在导出图片前，点击-文件-脚本-浏览，选中刚刚保存的 jsx 文件即可。

导出图片太大解决方案：

/**
 * 此解决方案来自[jdeal.cn]
 */
function deleteDocumentAncestorsMetadata() { 
whatApp = String(app.name);
if(whatApp.search("Photoshop") > 0) {
if(!documents.length) { 
alert("没有打开的文档，请打开一个文件以运行此脚本。") 
return; 
} 
if (ExternalObject.AdobeXMPScript == undefined) ExternalObject.AdobeXMPScript = new ExternalObject("lib:AdobeXMPScript"); 
var xmp = new XMPMeta( activeDocument.xmpMetadata.rawData); 
xmp.deleteProperty(XMPConst.NS_PHOTOSHOP, "DocumentAncestors"); 
app.activeDocument.xmpMetadata.rawData = xmp.serialize(); 
} 
} 
deleteDocumentAncestorsMetadata();

新建一个文本文档，然后复制上述代码，保存后修改.txt 后缀为.jsx。
也可以直接下载我打包好的文件imgbig.zip

使用方法：在导出图片前，点击-文件-脚本-浏览，选中刚刚保存的 jsx 文件即可。

下次遇到这样的情况，诸位可以试试。

亲测有效哦~~

B0ae个人成长计划-让,进步发生
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