Definition
Office Open XML (OOXML)
Office Open XML is a zipped, XML-based file format developed by Microsoft for office documents. It defines .docx (Word), .xlsx (Excel), and .pptx (PowerPoint), and is standardized as ISO/IEC 29500.
Because OOXML is an open ISO standard, third-party tools (including WebToSlides) can write valid PPTX files that open identically in Microsoft PowerPoint, Apple Keynote, LibreOffice Impress, and Google Slides.
Authoritative sources: en.wikipedia.org · wikidata.org · iso.org
Turn any webpage or HTML into editable slides
WebToSlides converts a URL, HTML, or Markdown into a native, editable PPTX you can open in PowerPoint, Keynote, or Google Slides.