Details: File format summary

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Summary
Name	Adobe Portable Document Catalog Index File
Version	3.0
Other names
Identifiers	PUID: fmt/447
Family
Classification
Disclosure
Description	This is an outline record only, and requires further details, research or authentication to provide information that will enable users to further understand the format and to assess digital preservation risks associated with it if appropriate. If you are able to help by supplying any additional information concerning this entry, please return to the main PRONOM page and select ‘Add an Entry’.
Orientation
Byte order
Related file formats	None.
Technical Environment
Released
Supported until
Format Risk
Developed by	None.
Supported by	None.
Source	Digital Preservation Department / The National Archives
Source date	28 Aug 2012
Source description	PDX is Adobe Acrobat Catalog Index file, available in Adobe Acrobat versions 2 and later. When created, a PDF Catalog Index will also create a number of dependent sub-files of specific filetypes. The extensions for these filetypes within earlier versions of .pdx are .wld, .abt, .did, .ddd, .pdd, .plc, .cat, .trn. In later versions only .idx files are created. The Catalog Index creates a fully text-searchable relationship between the indexed pdf files.
Last updated	28 Aug 2012
Note