Quick answer: PPTX and Google Slides are the two main presentation formats a team edits in. PowerPoint is the desktop and file standard; Google Slides is the collaborative web tool that runs in the browser.

The trade-off

PPTX (PowerPoint) Google Slides
Editing Desktop app Browser, real-time
Collaboration Through OneDrive / SharePoint Native, built-in
Offline Strong Works offline when enabled
File format .pptx, the standard Google format, exports to PPTX
Fonts Local fonts, embedding Google fonts, web delivery
Feature depth Deeper Simpler

When to use Google Slides

  • Multiple people edit the deck at the same time.
  • The deck is reviewed in comments and approvals.
  • The team lives in Google Workspace.
  • The deck is simple and web-first.

When to use PPTX

  • The deck is presented offline or on a stage machine.
  • The design needs precise control and complex graphics.
  • The file has to open on a third party's machine.
  • The deck is the deliverable and the customer edits it.

Converting

Google Slides exports to PPTX, and PowerPoint imports a PPTX into Google Slides. The conversion usually keeps the text and shapes, but a few things shift:

  • Fonts that aren't Google fonts get substituted.
  • Some PowerPoint animations and transitions are lost.
  • Complex SmartArt and certain effects don't map cleanly.
  • Charts sometimes become static images.

The file should be checked after the conversion.

The collaboration pattern

A common pattern is to draft the deck in Google Slides for the comments, then export the PPTX for the final presentation and the customer handoff. The PPTX vs PDF decision then applies for the final send.

The fonts

Google Slides uses Google fonts and renders them in the browser; PowerPoint uses local fonts and embedding. A deck that relies on a rare web font can change when exported to PPTX.

Frequently asked questions

Is Google Slides free? It's part of Google Workspace and the personal Google account is free. Can a PPTX be opened in Google Slides? Yes, uploaded and converted; review after conversion. Does the export keep the design? Mostly; watch fonts, charts, and animations. Which is safer for a stage presentation? The PPTX, downloaded and checked on the stage machine, with a PDF fallback.

Draft in whichever tool the team edits in; present from the PPTX checked on the presenting machine.

Related guide: the complete Gamma alternatives guide.

Related guide: the AI PowerPoint generator guide.

Related guide: the free AI presentation tools guide.

Choosing by how the file will be used

A native PPTX keeps editable objects, offline use, and compatibility with PowerPoint, including mapped CJK fonts and integrity repair so it opens cleanly. A browser-based deck is easier for simultaneous collaboration and sharing a link. Choose based on where editing happens and who needs access, and confirm the export preserves real objects rather than flattened images when the deck will be edited afterward.