Definition
LibreOffice Impress
LibreOffice Impress is the free, open-source presentation application from The Document Foundation. It opens and edits .pptx files natively, providing a cross-platform alternative to PowerPoint.
Impress is the reference implementation for many open-source tools that need to read or write PPTX. WebToSlides decks open in Impress with editable layouts, text, tables, and notes — useful for Linux users and air-gapped environments where Microsoft 365 isn’t available.
Authoritative sources: en.wikipedia.org · wikidata.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.