Somebody asks this question in almost every slide-design workshop I run, usually about ten minutes in, usually with a slightly guilty look. They already suspect their slides have too much text. They just want a number to hide behind.
So here’s the number, and then here’s why the number alone won’t save you: aim for roughly six words per slide for high-impact talks, and no more than about 30 to 40 words when you genuinely need more detail. But a word count is a symptom, not the disease. The real problem is what all that text does to the person watching.
Why Word Count Matters More Than You Think
When you put a paragraph on a slide, you force your audience into an impossible choice. They can read the screen, or they can listen to you. They cannot do both. Reading and listening both pull on the same language-processing part of the brain, and when the two streams compete, one loses. Usually it’s you.
This isn’t a design opinion. Cognitive scientists call it the redundancy effect, and it’s been studied for decades. John Sweller’s work on cognitive load theory showed that presenting the same information as both spoken words and on-screen text actually makes comprehension worse, not better. Your thorough, text-heavy slide is working against the exact thing you built it for.
The practical takeaway: every word on the slide is a word your audience reads instead of hearing from you. Fewer words means more attention on the presenter. That’s the whole game.
Where “Six Words” Comes From
The six-word figure gets attributed to Nancy Duarte and the general TED-style school of presenting, and it’s a useful anchor rather than a law. The logic is simple: six words is about what a person can absorb in a glance, then return their eyes to you. Anything longer and they drop into reading mode.
Think of the best conference slides you’ve seen. A single phrase. A number. One image. The speaker carried the meaning; the slide just punctuated it. That’s the effect six words is chasing. It forces you to figure out the one idea per slide that actually matters, which is a brutally good editing exercise.
Steve Jobs built entire product launches on slides with three or four words, sometimes just a single image. Nobody left those keynotes wishing there’d been more bullet points.
The Rules People Actually Quote (And Where They Break)
You’ll run into a few competing guidelines, and it helps to know what each one is really for:
The 6×6 rule: no more than six bullet points per slide, and no more than six words per bullet. That’s a ceiling of 36 words. It’s a reasonable guardrail for informational or training decks where people expect some detail on screen.
The 5/5/5 rule: five words per line, five lines per slide, five text-heavy slides in a row maximum. The last part is the clever bit — it forces you to break up walls of text with something visual before your audience glazes over.
The 7×7 rule: the older, more permissive version. Honestly, seven bullets of seven words each is 49 words, and by then you’ve built a document, not a slide. I’d skip this one.
None of these are laws of physics. They’re training wheels. The point isn’t to count on your fingers before every slide — it’s to internalize that less text almost always reads as more confident.
When More Words Are Actually Fine
I’d be lying if I said six words works everywhere. Context changes everything, and pretending otherwise is how you get dogmatic advice that falls apart in the real world.
A slide deck that doubles as a leave-behind document — the kind that gets emailed around after the meeting and read alone — needs more text, because there’s no presenter to fill the gaps. Consultants call these “slideuments,” and while purists hate them, they exist for a real reason. Same with technical or scientific talks where a precise definition or a formula genuinely needs to be on screen.
The trick is to design for the actual situation. If it’s a live talk with you standing there, strip it down. If it’s a document people will read without you, that’s not really a presentation problem — it might want to be a one-pager or a report instead. Trying to make one file do both jobs is how slides end up cluttered. Our guide on why your slides look cluttered digs into that tension in more detail.
How to Cut a Slide From 40 Words to 6
Knowing the target is easy. Actually cutting is where people freeze, because every word feels essential. It isn’t. Here’s the process I use:
Move the sentences to your notes. That paragraph you wrote? It’s your script, not your slide. Cut it from the slide and paste it into the speaker notes. Now the slide is empty and you can rebuild it deliberately.
Find the one idea. Ask what a person should remember three seconds after this slide leaves the screen. That’s your headline. Write it as a short phrase, not a full sentence.
Turn lists into visuals. Four bullet points about revenue growth want to be a chart. A process with five steps wants to be a simple diagram. The eye reads a picture faster than a list, and it remembers it longer.
Replace nouns with images. If a slide says “customer satisfaction,” a photo of a happy customer plus the number does more work than the words alone. If you’re worried the type is doing all the heavy lifting, our piece on the best fonts for presentations is worth a look — good typography lets a handful of words carry real weight.
The Bullet Point Problem Nobody Wants to Admit
Most over-worded slides aren’t over-worded because someone wrote an essay. They’re bloated because of bullet points. Bullets feel safe. They look organized. And they quietly encourage you to dump every sub-point onto the screen because, hey, it’s just a list.
The trouble is that a bulleted list tells the audience “read all of this now,” and they will — top to bottom, ignoring you completely until they hit the last one. Then they look up, realize they’ve missed thirty seconds of what you said, and check their phone. If a slide has more than a couple of bullets, ask whether those points are really parallel ideas or whether they’re actually the outline of things you should be saying out loud. Nine times out of ten, it’s the second one.
A slide with one strong statement lands. A slide with six competing bullets asks the audience to do your prioritizing for you, and they resent it a little, even if they can’t say why.
Different Rooms, Different Word Counts
The right number genuinely shifts with the setting, so it’s worth calibrating instead of memorizing one figure. A big-stage keynote in a dark room rewards almost no text — the audience is far away, the lights are low, and anything dense just becomes gray fuzz. A boardroom pitch to five people around a table can carry a bit more, because everyone’s close and the pace is more like a conversation.
A webinar or recorded talk sits somewhere in between, and it has one quirk worth remembering: people often watch on smaller screens and sometimes with the sound off before they commit. A slightly higher word count can help there, but only if the words are a clear headline, not a paragraph. When in doubt, design for the person in the back row on a bad connection. If it works for them, it works for everyone. Matching the density to the room is one of the fastest ways to make a presentation more interesting without adding a single new slide.
A Quick Gut Check Before You Present
Here’s a test that takes thirty seconds and tells you the truth. Put your deck in presenter view and flip through it at about two seconds per slide, roughly the pace an audience actually processes them. If you find yourself needing to stop and read, your audience will too — and while they’re reading, they’ve stopped listening to you.
Another one: stand six feet back from your monitor. Can you read every slide instantly? If you’re squinting, your font is too small and your word count is almost certainly too high. The two problems travel together.
Word count isn’t really about hitting a number. It’s about deciding, slide by slide, whether the words are helping you or replacing you. Six words on a screen with a confident presenter beats a wall of text every single time — and once you’ve felt the difference from the stage, you won’t go back. If you want to push this further, the ideas in making your slides look professional pair naturally with cutting your text down.
