Node.js

Update a String Property in XMP

See more XMP Examples

Demonstrates how to open a JPG or TIF image file, access the XMP metadata, and update the value of a string property. (If the string property does not already exist, it is created.) Node.js

NODEJS_PRELUDE

function chilkatExample() {

    var success = false;

    // This example assumes the Chilkat API to have been previously unlocked.
    // See Global Unlock Sample for sample code.

    var xmp = new chilkat.Xmp();

    // Load a JPG or TIF image file.
    success = xmp.LoadAppFile("qa_data/xmp/AJ_123642_1511.tif");
    if (success !== true) {
        console.log(xmp.LastErrorText);
        return;
    }

    console.log("Num embedded XMP docs: " + xmp.NumEmbedded);

    // This example assumes that XMP metadata is already present in the image file.
    if (xmp.NumEmbedded == 0) {
        console.log("No XMP metadata already exists..");
        return;
    }

    // Get the XMP metadata.
    // xml: Xml
    var xml;
    xml = xmp.GetEmbedded(0);

    // Show the XML:
    console.log(xml.GetXml());

    // Update (overwrite) a string property.
    xmp.AddSimpleStr(xml,"NumberofTimes","123");

    success = xmp.SaveAppFile("qa_output/updated.tif");
    if (success !== true) {
        console.log(xmp.LastErrorText);
        return;
    }

    console.log("Success.");

}

chilkatExample();