1235 Adobe Portable Document Catalog Index File 3.1 Adobe Portable Document Catalog Index File (PDX) is the format of a file created when an index is built for a collection of PDF documents defined as a catalog in Adobe Acrobat Pro versions 2.0 and later, allowing users to search through the contents of the catalogue. 1 Digital Preservation Department / The National Archives 28 Aug 2012 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.; 04/2024 (v.118): Description and links added as part of PRONOM Research Week 2023. Archives nationales (French National Archives). 17 Apr 2024 fmt/448 PUID pdx File extension 700 Adobe PDX 3.1 Version 1 BOF first 31 bytes: %PDX-3.1.%âãÏÓ..1 0 obj<</PDX<< EOF last 11 bytes: >>..%%EOF.. 1 Absolute from BOF 0 255044582D332E310D25E2E3CFD30D0A312030206F626A3C3C2F5044583C3C 1 Absolute from EOF 0 3E3E0D0A2525454F460D0A 701 Adobe PDX 3.1 Version 2 BOF first 31 bytes: %PDX-3.1.%âãÏÓ..1 0 obj<</PDX<< EOF last 9 bytes: >>.%%EOF. 1 Absolute from BOF 0 255044582D332E310D25E2E3CFD30D0A312030206F626A3C3C2F5044583C3C 1 Absolute from EOF 0 3E3E0D2525454F460D