Extended Properties

Extended properties are a predefined set of metadata properties that are applicable to Office Open XML documents. These properties extend the set of core properties defined in Part 2: "Open Packaging Conventions" which are common to all packages.

Extended properties are stored within an Extended File Properties part with:

  • Source Relationship: http://schemas.openxmlformats.org/officeDocument/2006/relationships/extended-properties

  • Content Type: application/vnd.openxmlformats-officedocument.extended-properties+xml

Each extended property is represented as an element in the extended properties part. Extended properties elements are non-repeatable and may be empty or omitted. If all extended property elements are omitted then the extended properties part may be excluded from a document.

example: 
<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<Properties xmlns="http://…/extended-properties"
  xmlns:vt="http://…/docPropsVTypes">
..<Template>Sales Report.dotm</Template>
..<TotalTime>0</TotalTime>
..<Pages>1</Pages>
..<Words>166</Words>
..<Characters>948</Characters>
..<Application>Microsoft Office Word</Application>
..<DocSecurity>0</DocSecurity>
..<Lines>7</Lines>
..<Paragraphs>2</Paragraphs>
..<ScaleCrop>false</ScaleCrop>
..<Company>Northwind Traders</Company>
..<LinksUpToDate>false</LinksUpToDate>
..<CharactersWithSpaces>1112</CharactersWithSpaces>
..<SharedDoc>false</SharedDoc>
..<HyperlinksChanged>false</HyperlinksChanged>
..<AppVersion>12.0000</AppVersion>
</Properties>