Extract metadata from PDF documents

To extract metadata from PDF documents getMetadata method is used. This method allows to extract the following metadata:

NameDescription
titleThe title of the presentation.
subjectThe subject of the presentation.
keywordsThe keyword of the presentation.
authorThe name of the presentation’s author.
applicationThe name of the application.
application-versionThe version number of the application that created the presentation.
created-timeThe time of the presentation creation.
last-saved-timeThe time of the the presentation when it was last saved.

Here are the steps to extract metadata from PDF document:

  • Instantiate Parser object for the initial document;
  • Call getMetadata method and obtain collection of document metadata objects;
  • Iterate through the collection and get metadata names and values.

The following example demonstrates how to extract metadata from PDF document:

// Create an instance of Parser class
try (Parser parser = new Parser(Constants.SamplePdf)) {
    // Extract metadata from the document
    Iterable<MetadataItem> metadata = parser.getMetadata();
    // Iterate over metadata items
    for (MetadataItem item : metadata) {
        // Print an item name and value
        System.out.println(String.format("%s: %s", item.getName(), item.getValue()));
    }
}

More resources

GitHub examples

You may easily run the code above and see the feature in action in our GitHub examples:

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