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Format

XLSX Strict OOXML Spreadsheet

Summary

Name
XLSX Strict OOXML Spreadsheet
Version
2007 onwards
Identifiers
  • MIME: application/vnd.openxmlformats-officedocument.wordprocessingml.document
  • Library of Congress Format Description Identifier: fdd000401
  • PUID: fmt/1828
Format type
Spreadsheet
Description
XLSX Strict is the implementation of the Office Open XML spreadsheet format that strictly conforms to the ISO 29500-1: 2008-2016 standard.
File extensions
xlsx
Source
Danish National Archives / Danish National Archives
Developed by
Microsoft Corporation
Supported by
Microsoft Corporation

Relationships

Has priority over

Container signatures

Type: ZIP

2200 - Microsoft Excel OOXML Strict

File path
xl/workbook.xml

Byte sequence reference

BOFoffset

Sub sequences
Min Frag Length
Position
1
Sub sequence min offset
0
Sub sequence max offset
2048
Sequence
'xmlns="http://purl.oclc.org/ooxml/spreadsheetml/main"'

Changelog

  • Added in V110

    Release date
    14 March 2023

    XLSX Strict OOXML Spreadsheet: Signature researched and samples provided by Danish National Archives and Preservica.

    XLSX Strict OOXML Spreadsheet: Full entry added. Submitted by Danish National Archives and Preservica.