I build decks in both, most weeks, and clients ask me to pick a side more often than they ask about design. The honest position is that neither is better — they fail in different places, and the right choice depends on what happens to the deck after it leaves your hands.
Choose PowerPoint when
The deck has to look exactly right
PowerPoint gives you real typographic control: precise kerning, line spacing, gradient and shadow handling, and vector shape operations that Google Slides simply does not have. If your deck carries brand weight — an investor deck, a keynote, anything projected large — PowerPoint holds up better.
You need embedded fonts
This is the one that catches people. A .pptx can embed its fonts so the deck renders correctly on a machine that has never seen your brand typeface. Google Slides cannot. If you are sending a deck to someone outside your organisation, font substitution will quietly wreck your layouts and you will not know it happened.
The charts are doing heavy lifting
PowerPoint’s native charting is considerably more capable, and it links to Excel properly. For financial models, cohort charts, or anything with a lot of series, it is not close.
Choose Google Slides when
More than one person will edit it
Real-time collaboration is the whole argument, and it is a strong one. If three people are working on the deck the night before a board meeting, Google Slides wins on that alone. Version history is better too — you can see who changed what and roll back cleanly.
It lives as a working document
Sales decks that get updated weekly, internal reviews, anything where the link matters more than the file. Sending a link that is always current beats emailing v7_final_FINAL.pptx.
Your organisation runs on Google Workspace
Fighting your own tooling is rarely worth it.
The mistake to avoid
Do not build in one and export to the other. Exporting a PowerPoint deck to Google Slides breaks spacing, substitutes fonts, flattens or mangles charts, and converts carefully built shapes into something you cannot edit. The reverse is worse.
If you genuinely need both formats, the deck has to be built twice, natively. It is more work, and it is the only way both versions actually look like the deck you designed. This is why I quote dual-format projects differently — it is not an export step.
What I recommend most often
For an investor deck: PowerPoint. It will be forwarded to people you have never met, opened on machines you do not control, and possibly projected. Embedded fonts and precise control matter more than collaboration, because you are not collaborating — you are sending.
For a sales deck a team uses every week: Google Slides. The deck will change constantly and several people will touch it. Fidelity matters less than everyone working from the current version.
For a master template: both, built natively, because different parts of the business will want different things and you do not want them exporting.
One thing that applies either way
Whichever you choose, insist on native editable files at handover. A deck delivered as flattened images or a PDF is a deck you cannot update, and you will need to update it — figures change, the ask changes, a slide gets cut for a shorter meeting. If a designer will not hand over the working file, that is worth asking about before you start.
