PDF/A

PDF/A is specialized for use in the archiving and long-term preservation of electronic documents.

PDF version 1.4 or above is required.

var docDefinition = {
    version: '1.5',
    subset: 'PDF/A-3a',
    tagged: true,
    displayTitle: true,
    info: {
        title: 'Awesome PDF document from pdfmake'
    },
    content: [
        'PDF/A document for archive'
    ]
};

Supported PDF versions (property version):

Subset of document (property subset):

Mark document as Tagged PDF (property tagged)

Display of document title in window title (property displayTitle)