You open PowerPoint, create a new slide, and start typing. A title appears, followed by a few bullet points.
Then you remember another important detail, add two more sentences, shrink the font slightly, and suddenly your slide looks more like a page from a textbook.
This happens all the time.
So, how much text should you put on a slide? There is no universal number that works for every presentation, but there is a useful principle: your slides should support what you are saying, not compete with you for the audience’s attention.
Microsoft recommends keeping slide text simple, using short sentences or bullets, and generally keeping individual items to a single line when possible.
The goal is to encourage people to listen to the presenter rather than spend the entire presentation reading the screen.
That sounds simple, but applying it takes a little more thought. Let’s look at how to decide what actually belongs on a presentation slide.
There Is No Perfect Word Count for Every Slide
You may have heard rules such as “no more than 30 words per slide” or “use six bullets with six words each.”
These guidelines can be useful, but they are not laws.
A title slide might contain only five words. A slide showing an important quotation may contain 25. A technical presentation could require labels, definitions, or equations that naturally create more information on screen.
The better question is not simply, “How many words are there?”
Ask whether the audience can understand the main point within a few seconds.
Presentation specialists at Duarte recommend focusing on one main idea per slide and removing content that does not directly support that message. When several ideas compete for attention, the slide becomes harder to understand quickly.
Think of each slide as a visual checkpoint rather than a miniature document.
Why Too Much Text Makes Slides Harder to Follow
Imagine trying to read a paragraph while someone beside you says something slightly different.
That is essentially what can happen during a text-heavy presentation.
Your audience is looking at written words while simultaneously trying to process the words you are speaking. Both activities demand attention.
Research on multimedia learning suggests that people have limited processing capacity. When too much information arrives at the same time, unnecessary cognitive load can make it harder to identify and remember the important material.
UC San Diego’s multimedia-learning guidance specifically recommends removing unnecessary information and breaking complex material into manageable segments.
This does not mean text is bad.
It means every sentence on screen should earn its place.
If you are planning to read an entire paragraph aloud word for word, ask yourself whether the paragraph needs to be displayed at all.
Often, a short phrase combined with your spoken explanation creates better readibility and keeps attention focused on you.
Does the 6×6 Rule Still Work?
One familiar presentation guideline is the 6×6 rule: roughly six lines of text per slide and six words per line.
Microsoft’s accessibility guidance offers a similar benchmark, suggesting ideally no more than seven lines per slide and approximately six words on each line. It also recommends leaving enough empty space around text.
That can be a helpful starting point, especially for beginners.
However, you should not force every slide into exactly 36 words.
Suppose your slide contains one sentence:
“Customer complaints increased after the new checkout system launched.”
That single sentence may communicate the point better than six separate bullets.
Meanwhile, a diagram might need several short labels but still feel visually simple.
Treat the 6×6 approach as a reminder to simplify rather than a mathematical requirement.
If you find yourself shrinking your font just to obey your original slide layout, that is usually a sign that you should reduce the content or split it across multiple slides.
Use One Main Message Per Slide
A useful habit is to decide what each slide is supposed to communicate before adding any content.
Try completing this sentence:
“After seeing this slide, my audince should understand that…”
If you cannot finish that sentence clearly, the slide may contain too many ideas.
For example, imagine you are presenting monthly sales results. One slide could communicate that overall revenue increased. The next might explain which product produced most of that growth. Another could show which region underperformed.
Putting all three messages on one screen might save slides, but it does not necessarily save attention.
Carnegie Mellon University’s presentation-design guidance highlights an “assertion-evidence” approach in which a slide centers on a meaningful claim and uses visual evidence to support it, rather than relying heavily on bullet lists.
More slides are not automatically worse.
Ten simple slides can sometimes be much easier to follow than five overloaded ones.
Replace Full Sentences With Visual Support When Possible
Slides are visual tools, so not every idea needs to become text.
Suppose you are explaining that website traffic increased significantly over six months.
You could write:
“Website traffic increased steadily between January and June, reaching approximately twice the level recorded at the beginning of the period.”
Or you could show a simple line chart and say that sentence aloud.
The chart allows the audience to see the trend almost instantly.
Multimedia-learning research supports combining appropriate words and visuals while removing elements that do not contribute to understanding. The purpose is not to decorate the slide but to communicate information more efficiently.
Photos, graphs, diagrams, timelines, icons, and simple illustrations can sometimes replace several sentences.
But visuals should have a purpose.
Adding five decorative photographs to make an empty slide look “interesting” can create a different kind of clutter. Duarte recommends removing unnecessary graphics and other elements when they do not contribute meaningfully to the message.
Simple does not mean boring. It means intentional.
Keep Text Large Enough to Read Comfortably
Another useful way to judge the amount of text is to look at your font size.
If you have to make the text tiny to fit everything, you probably have too much.
Microsoft advises avoiding very small type and notes that font sizes below 18 points may become difficult to read in presentation settings.
Another Microsoft PowerPoint guide suggests that fonts below roughly 30 points can become difficult for audiences viewing slides from a distance.
The exact number depends on the room, screen size, font, and viewing distance.
A virtual presntation watched on a laptop is different from a conference presentation projected across a large hall.
Duarte also notes that screen size, text width, and line spacing affect readability in virtual presentations. Narrower blocks of text and sufficient spacing can make on-screen content easier to scan.
Rather than asking whether text technically fits, ask whether it can be read comfortably.
Those are very different standards.
Put Details in Speaker Notes, Not on the Slide
One reason slides become crowded is that presenters use them as memory aids.
They are afraid they will forget something, so they place almost every sentence they plan to say on screen.
Speaker notes are a better solution.
Keep key phrases, statistics, transitions, examples, and reminders in your notes. Let the slide show only what the audience genuinely needs.
For example, your notes might contain a detailed explanation of why customer retention dropped by 12 percent. The slide itself might simply show:
Customer Retention Fell 12%
alongside a small graph.
You then provide the interpretation verbally.
This creates a healthier division of labor: the slide shows the main idea and evidence, while you provide context.
It also makes your delivery feel more like a conversation and less like public reading.
When More Text Is Actually Appropriate
Minimal text is useful, but “less text” should never become a rigid design religion.
Some presentations genuinely need more written information.
Training materials may include definitions that participants need to copy. Academic slides may display short quotations. Technical presentations may require formulas, code snippets, procedures, or terminology.
Accessibility requirements can also influence what information needs to appear visually.
In these cases, focus on hierarchy rather than simply deleting words.
Make the most important information obvious through headings, spacing, positioning, and emphasis. Break long material across several slides rather than forcing everything onto one.
If your audience needs a detailed reference document afterward, consider providing a handout or separate PDF instead of turning every slide into a document.
Your presentation deck and your reference material do not always need to be the same thing.
That is a simple but very practicle distinction.
A Quick Test for Text-Heavy Slides
Before finishing your presentation, view each slide full-screen for a few seconds.
Can you immediately identify the main message?
Can the smallest text be read comfortably?
Are there paragraphs you plan to read aloud anyway?
Could a chart, image, number, or short phrase communicate the idea faster?
Most importantly, would removing something make the slide clearer without losing essential meaning?
If the answer is yes, remove it.
Good slide design is often less about adding the perfect element and more about knowing what can safely disappear.
So, how much text should you put on a slide? There is no magic number, but most presentation slides benefit from less text, larger type, clear visual hierarchy, and one dominant idea at a time.
Rules such as 6×6 can provide a useful starting point, but clarity should always come before formulas. A quotation, technical diagram, chart, classroom lesson, and sales presentation naturally require different amounts of information.
Remember that slides are there to support your message, not replace you as the speaker.
Before your next presentation, review every slide and ask one simple question: Does the audience need to read this, or can I explain it instead?
Remove anything unnecessary, give your content room to breathe, and let your slides help people understand your story rather than forcing them to read it.