xmp-reader

Extracts some commonly used XMP/RDF metadata tags from JPEG files. Does not pretend to be a complete metadata management tool, but allows you to extract some information other EXIF-management tools on NPM fail to retrieve. Was originally created only to extract a Description field baked into my JPEGs by Google's Picasa.

Usage

To install the module add it to your project's package.json dependencies or install manually running:

npm install xmp-reader

Then pull it in your code:

const xmpReader = require('xmp-reader');

Now you can either feed it a file name:

xmpReader.fromFile('/path/to/file.jpg', (err, data) => {
  if (err) console.log(err);
  else console.log(data);
});

Or a buffer:

xmpReader.fromBuffer(buffer, (err, data) => {
  if (err) console.log(err);
  else console.log(data);
});

Both methods above return a promise, you can use that instead of the callback:

xmpReader.fromBuffer(buffer).then(
  (data) => console.log(data),
  (err) => console.log(err)
);

Output will look something like that, depending on your metadata:

{
    "raw": {
        "MicrosoftPhoto:Rating": "50",
        "dc:title": "Title",
        "dc:description": "Title",
        "dc:creator": "Alexander Kuznetsov",
        "Iptc4xmpCore:Location": "New York",
        "MicrosoftPhoto:LastKeywordXMP": ["tag1", "tag2"],
        "MicrosoftPhoto:LastKeywordIPTC": ["tag1", "tag2"],
        "xmp:Rating": "3"
    },
    "rating": 3,
    "title": "Title",
    "description": "Title",
    "creator": "Alexander Kuznetsov",
    "location": "New York",
    "keywords": ["tag1", "tag2"]
}

raw property contains vendor-specific tag names.

License

MIT License