Why share slides as PDF
Not everyone has PowerPoint, and slides can look broken in other programs or on phones. A PDF of your presentation opens almost everywhere, keeps the slide design fixed, and is the format most portals, teachers and clients accept for handouts and submissions.
What happens when you convert
The tool reads your .pptx file in the browser — the text, shapes and pictures on each slide — and draws every slide as a page in the PDF. Each page is saved as a picture of the slide, so the text in the PDF cannot be selected or searched. Animations, transitions, videos, speaker notes and clickable links are not included.
Which presentations convert best
Slides made with text boxes, simple shapes and pictures convert most faithfully. Charts, SmartArt, special effects, embedded fonts and complex grouped objects may look different or simpler than in PowerPoint. Older .ppt files from PowerPoint 97–2003 must be saved as .pptx first.
Common problems and how to fix them
A chart or diagram looks wrong: in PowerPoint, right-click it and save it as a picture, place the picture on the slide, and convert again. Text uses a different font: choose a common font such as Arial or Calibri. You need selectable text: run the PDF through OCR PDF or use PowerPoint's own Save as PDF.
Good habits
Check every slide in the PDF before sending, keep the .pptx for future edits, and use your PDF viewer's print settings to print several slides per sheet as handouts.