JPG file size inflated - Photoshop Document metadata: ancestors

Has anyone experience this problem?

I have a JPG file I have deleted all the image of and filled with white. When I save it, the size 7.89 MB. If I go into Bridge and clear metadata, probably ' < Document: ancestors > ' which contains ' RDF: bag <>"and 100 + lines of hexadecimal code, the file size down to about 150. Maybe I'm missing a file option on photoshop, but it seems that this metadata should be rubbed on the saved file. In addition, no one knows what kind of information is stored in the Document ancestors? Or if there is information from integrated image that could potentially be extracted?

I was able to reach out to Adobe through my work. They mentioned that it was abnormal behavior so that there are over 100,000 lines of Document ancestors and thought it's maybe because it was a model. It turns out that a lot of the art I work with has lines of ancestors, and when you place them in a whole new file, this file becomes the. Many of these assets are CG renders, which too would be new files. While I don't know source of the Document ancestors, I could find a way to eliminate:

function deleteDocumentAncestorsMetadata() {
    whatApp = String(app.name);//String version of the app name
    if(whatApp.search("Photoshop") > 0)  { //Check for photoshop specifically, or this will cause errors
        //Function Scrubs Document Ancestors from Files
        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);
        // Begone foul Document Ancestors!
            xmp.deleteProperty(XMPConst.NS_PHOTOSHOP, "DocumentAncestors");
            app.activeDocument.xmpMetadata.rawData = xmp.serialize();
         }
}
//Now run the function to remove the document ancestors
deleteDocumentAncestorsMetadata();

Adobe has indicated that these were intended for the medical legal file and contained no sensitive information. I also tested this script with a loop provided in one of the Javascript reference Documents, and while it removes successfully ancestors without opening the file, it does not reduce the size of file until it is opened and saved again. So it must be run before you save on an open file and fit easily in my save scripts. Problem solved!

If you are new to scripting, copy the lines above in a text of the document (no formatting as it can not work) and change the extension of JSX. From here in Photoshop, go to file > Scripts > Browse, locate this script to run on an open file. This can be tedious to do by file, so if you run on several, place the file in a fixed location and record an action that runs this script. If you don't know, once the script is saved you lot this script on the file navigation files > PLC > batch. Because the file needs to be saved to eradicate the ancestors of the document, I recommend pairing your script with a backup action as in a fixed location, as save in as long as actions will remember the folder you saved in.

Tags: Photoshop

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