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Format

PDF Portfolio

Summary

Name
PDF Portfolio
Version
1.7
Identifiers
PUID: fmt/1451
Format type
Aggregate
Description
PDF Portfolio files are PDFs using a feature added to the PDF specification in version 1.7 called "Collections". Collections offer a way to embed file attachments that are related in structure or content, as well as information that a reader application should use to determine how to present these files. A simple metadata schema can also be defined for the collection, allowing metadata to be provided for each item in the collection. Additionally, folder structure can be provided for the collection items, allowing reader applications to present the attachments with a tree-view. This makes the PDF Portfolio a convenient format to export mailboxes as mail folder structure can be preserved, along with standard email metadata such as "To", "From" and "Subject" fields. PDF Portfolio files can specify a "default view", which is a file in the collection that a reader application should display when opening the Portfolio.
File extensions
pdf
Submitted by
Preservica / Preservica
Developed by
Adobe Systems Incorporated
Supported by
Adobe Systems Incorporated

Relationships

Has priority over

Internal signatures

PDF Portfolio 1.7

Description
BOF: %PDF-1.7 followed by '/Collection '. EOF (offset up to 1024 bytes): '%%EOFF(.|F.|F..|F..)'
Provenance
04/2024 (v.117)-Signature modified to no longer search for '<</Cl<<' block. Submitted by the Archeological Data Service and Preservica.

Byte sequences

Min Frag Length
Absolute from BOF
Offset
0
Max offset
None
Byte Sequence
255044462D312E37*2F436F6C6C656374696F6E20
Endianness
None
Min Frag Length
Absolute from EOF
Offset
0
Max offset
1024
Byte Sequence
2525454F(46|460A|460D|460D0A|460D00)
Endianness
None

Changelog

  • V118

    Release date
    30 April 2024
    • Updated

      PDF Portfolio 1.7: Signature modified to no longer search for '<</Cl<<' block. Submitted by Archeological Data Service and Preservica.

  • V98

    Release date
    27 October 2021
    • Added format

      PDF Portfolio: Full entry added. Submitted by Preservica.

    • Added signature

      PDF Portfolio: Signature developed and samples provided by Preservica.