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> Data Deposition Formats > PDF for archival preservation, 2020
PDF for archival preservation, 2020
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Abbreviation: PDF/A-4
Identifiers:
Type Id
SIS ID fPDFA-4 Copy ID to clipboardSIS ID copied
LOCLibrary of Congress fdd000532
Media type(s):
File extension(s): .pdf
Format family: PDF/A
Description:

PDF/A-4 is a format created by subsetting the PDF 2.0 (ISO 32000-2) format, with the aim of prohibiting features unsuitable for long-term archiving, such as font linking (as opposed to font embedding) and encryption. Other formats in the PDF/A family are as follows:

  • PDF/A-1: "Part 1: Use of PDF 1.4" (2005-09-28)
  • PDF/A-2: "Part 2: Use of ISO 32000-1" (2011-06-20)
  • PDF/A-3: "Part 3: Use of ISO 32000-1 with support for embedded files" (2012-10-15)

Centres should note that Part 1 references an obsolete version of PDF (1.4), while parts 2 and 3 reference the fully open PDF 1.7.

For more details, see a Wikipedia overview or consult the standards documents, where available.

VeraPDF is an open-source validator for PDF/A 1-3 formats. Adding the validation of PDF/A-4 files appears to be scheduled for 2021-2022.

Keywords: document format, binarized TextualData
Related Standard(s):
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Version ID: 9616381