Presentation Skills: Seven Rules for Communication Through Slides

Oct 5, 2023 | Presentation Skills

Some business professionals think presentation skills begin and end with creating slides.

They build a slide deck, stand in front of the audience, and use the slides as a script.

That is a difficult experience for an audience.

When you give a presentation, you are the presentation. The slides are there to support you, clarify your message, and help the audience follow your thinking.

Slides can be powerful when they are simple, clear, and audience-centered. They can also create confusion when they are overloaded, hard to read, or treated like speaker notes.

The goal is not to impress the audience with slides.

The goal is to communicate.

Slides Should Support the Presenter

Effective slides help the audience understand the message more quickly.

They should not compete with the presenter for attention. They should not force the audience to read while trying to listen. They should not contain every word the presenter plans to say.

If your slides become the presentation, the audience may stop listening to you and start reading ahead.

Strong presentation skills require knowing what belongs on the slide, what belongs in your spoken delivery, and what can be left out entirely.

Here are seven rules for communicating more effectively through slides.

1. Use Upper and Lower Case in Titles and Text

Most presenters do not need to be graphic designers. In many organizations, slides are created using corporate templates and brand standards.

Still, the way text appears on a slide matters.

In general, upper and lower case text is easier to read than text written in all capital letters. All caps can feel visually heavy, and it can slow the audience down as they try to process the message.

When possible, follow standard business writing conventions. Use upper and lower case for titles, subtitles, and body text unless your organization’s design standards require something different.

Your audience should not have to work hard to read your slides.

2. Highlight Key Words

When text appears on screen, help the audience quickly identify what matters most.

Highlighting key words can guide attention and make the message easier to follow.

You can highlight key words by using:

  • Bold text
  • Color contrast
  • Font size
  • Strategic placement

The key is restraint.

If everything is emphasized, nothing is emphasized.

Use highlighting to draw attention to the most important words, numbers, or phrases. This helps the audience understand the point without reading the entire slide word for word.

3. Use Two to Four Colors for Text

Color can help organize information and create visual interest.

However, too much color can distract the audience and make slides feel cluttered.

Using the same color for every piece of text may feel flat, but using too many colors can overwhelm the slide and reduce clarity.

Two colors per screen can be very effective. If you need a third or fourth color for headings, emphasis, categories, or corporate design requirements, that can work as well.

The important point is consistency.

Do not use color randomly. Give each color a purpose.

For example, one color might indicate headings, another might indicate key data, and another might indicate action items or recommendations.

4. Follow the Rule of Four for Bullets

Bullet points are useful when they simplify information.

They become a problem when they turn the slide into a document.

Communispond teaches the Rule of Four:

  • Four bullets maximum
  • Four words per bullet

This guideline is simple, memorable, and powerful.

A slide with too many bullets forces the audience to read while the presenter is speaking. That creates cognitive strain. The audience has to choose whether to read the slide or listen to the speaker.

When that happens, both the slide and the presenter become less effective.

The Rule of Four helps keep slides clean, focused, and easier to process.

For example, instead of a slide with long sentences, use short phrases that support your spoken message.

Here is the difference:

Too much text:

  • We need to improve the way our team communicates during client handoffs.
  • There are too many gaps between the sales process and implementation process.
  • Clients are asking the same questions multiple times after the project begins.
  • We need a more consistent process for documenting expectations and next steps.

Better slide:

  • Clarify client expectations
  • Improve handoff process
  • Reduce repeated questions
  • Document next steps

The speaker can explain the detail verbally. The slide simply supports the message.

5. Check Spelling

Misspelled words do not make a presenter look informal, creative, or relatable.

They make the presentation look unfinished.

Even a small typo can distract the audience. Some people may stop listening because they are focused on the error. Others may question the care and preparation behind the presentation.

Before presenting, review every slide carefully.

Look for:

  • Spelling errors
  • Grammar mistakes
  • Inconsistent capitalization
  • Incorrect names or titles
  • Wrong dates or numbers
  • Formatting issues

It can also help to ask someone else to review the deck. Fresh eyes often catch mistakes the presenter misses.

6. Use Licensed Images

Images can help communicate ideas quickly and memorably.

A strong image can support a point that would take several sentences to explain. Images can also add emotion, clarity, and visual interest to a presentation.

But presenters should use images responsibly.

Make sure you have the right to use the photos, illustrations, icons, cartoons, or graphics in your presentation.

Using unlicensed images can create unnecessary risk for you and your organization. Even when the chance of being challenged seems small, the potential embarrassment and legal concern are not worth it.

Use images from approved corporate libraries, licensed stock image sources, or properly credited resources that allow commercial use.

Also remember that images should support the message. Do not add images just to decorate the slide.

7. Minimize Special Effects

Animations, transitions, and special effects can be useful when they support the message.

They can reveal information gradually, show movement, demonstrate sequence, or draw attention to a specific point.

But too many effects can distract the audience.

If the audience is paying more attention to the animation than the message, the effect is working against you.

Use special effects sparingly and intentionally.

Before adding an effect, ask:

  • Does this clarify the message?
  • Does this improve understanding?
  • Does this help pacing?
  • Would the slide work without it?

If the effect does not support the message, remove it.

Slides Are Not Speaker Notes

One of the biggest slide mistakes is putting the entire presentation on the screen.

Slides should not function as a script.

Your speaker notes, preparation, and delivery should carry the full message. The slides should reinforce that message with concise text, useful visuals, clear structure, and strategic emphasis.

If the audience can understand the entire presentation by reading the slides without you, the deck may be doing too much.

If the audience cannot follow the presentation without reading every word on the slides, the deck may not be supporting you effectively.

The best slides create a partnership between the presenter and the visual.

Effective Slides Help Audiences Listen

Slides are not only visual aids. They are listening aids.

A strong slide helps the audience know where to focus. It supports the speaker’s logic. It makes important ideas easier to remember.

A weak slide does the opposite.

It creates clutter, divides attention, and makes the audience work harder than necessary.

When preparing slides, think about the audience experience.

Ask yourself:

  • What should they notice first?
  • What should they remember?
  • What can I say instead?
  • What can be removed?
  • What needs visual support?

These questions help you design slides that support communication instead of distracting from it.

Presenting With Slides in Today’s Workplace

These rules apply whether you are presenting in person, virtually, or in a hybrid meeting.

In virtual and hybrid environments, slides can become even more important because audiences may be dealing with distractions, small screens, or limited nonverbal cues.

That makes clarity essential.

Use readable text. Keep slides focused. Avoid clutter. Make visuals easy to understand. Pause when introducing a new slide so the audience has time to process it.

For related guidance, read these presentation tips for effective slides.

Final Thought

Presentation slides are not the presentation.

You are.

Slides exist to support your message, not replace it. When they are clear, focused, and intentional, they make it easier for the audience to understand and remember what matters.

Use upper and lower case text. Highlight key words. Use color consistently. Follow the Rule of Four. Check spelling. Use licensed images. Minimize special effects.

These rules are timeless because they keep the focus where it belongs: on communication.

Communispond’s Executive Presentation Skills® program helps professionals create and deliver presentations that are clear, audience-centered, and supported by effective visuals.

Put the Ideas Into Practice

Build Communication Skills That Create Real Impact

Explore Communispond training and coaching designed to help professionals communicate with greater clarity, confidence, and impact.

Explore Communispond
Before AI Builds Your Slides, Build Your Message

Before AI Builds Your Slides, Build Your Message

AI can help create slides quickly. It can turn notes into an outline, suggest slide titles, summarize long documents, create visuals, and make a presentation deck look polished in less time. That can be incredibly useful. But before AI builds your slides, you still...

read more
How to Make Your Message Stick After the Meeting Ends

How to Make Your Message Stick After the Meeting Ends

A meeting can feel productive in the moment and still fail afterward. People nod. Questions get answered. Ideas are discussed. Decisions seem clear. Then everyone leaves, returns to their inbox, and walks away with a slightly different understanding of what was said,...

read more
The Hidden Cost of Unclear Workplace Communication

The Hidden Cost of Unclear Workplace Communication

Unclear workplace communication rarely looks dramatic at first. More often, it looks like a missed deadline, a repeated question, a confusing handoff, a meeting that ends without a decision, or a team that is busy but not aligned. The cost may not always show up as a...

read more