XLSX Strict OOXML Spreadsheet 2007 onwards
Unknownspreadsheet
XLSX Strict is the implementation of the Office Open XML spreadsheet format that strictly conforms to the ISO 29500-1: 2008-2016 standard.
Identify it
| Extensions | .xlsx |
|---|---|
| MIME types | application/vnd.openxmlformats-officedocument.wordprocessingml.document |
| PRONOM | fmt/1828 |
| Library of Congress | fdd000401 |
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Sources
From PRONOM. Updated 2023-02-14.