A long blog post to explain the artificial complexity of XLSX files, as compared to ODS files: https://blog.documentfoundation.org/blog/2025/09/27/the-artificial-complexity-of-ooxml-files-the-xlsx-case/ @opendocument @LibreOffice
The Document Foundation Blog
The artificial complexity of OOXML files (the XLSX case) - The Document Foundation Blog
The post, published on 18 July 2025, which explained why an artificially complex XML schema, such as that used by Microsoft 365 (formerly Microsoft Office) files, is in fact a subtle tool for locking in users because it is invisible and impossible to detect…
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