PowerPoint Viewer Online — Free PPTX Slide Reader | Online Gallery
Navigate PowerPoint presentation decks in 16:9 canvas. View and flip through Microsoft PowerPoint presentation decks (.pptx, .pptm, .ppsx) in browser.
What is PowerPoint Viewer and what does it do?
The PowerPoint Presentation Viewer lets you review .pptx, .pptm, and .ppsx slide decks in a 16:9 responsive presentation view directly inside your browser.
- Cycle through slide decks with easy prev/next controls.
- Inspect bullet points and slide headings clearly.
- Works on desktop and mobile without PowerPoint or Keynote.
How does PowerPoint Viewer work?
Parses ppt/slides/slide{n}.xml streams from the PowerPoint ZIP archive and displays extracted text in structured slide templates.
100% private: all processing happens locally in your browser using client-side WebAssembly, WebCrypto, WebAudio, and HTML5 Canvas. Your files are never uploaded to any server.
Who needs PowerPoint Viewer?
Speakers & Students
Check presentation decks on any browser before pitching or presenting.
Supported file formats
PowerPoint Presentation Viewer (.pptx) opens and processes the following file extensions directly in your browser:
.pptx.pptm.ppsxHow to use PowerPoint Viewer — step by step
- 1
Upload PPTX
Drag and drop your PowerPoint presentation file.
- 2
Flip Slides
Use previous and next controls to cycle through slide decks.
Frequently asked questions
Can I view slides without Microsoft Office?
Yes! Decodes presentation slide streams in browser memory.
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