20 PowerPoint Design Tips for Better Slides

Most ugly slides are not a software problem. PowerPoint is perfectly capable of producing clean, professional work, the defaults just push you toward the opposite. These PowerPoint design tips are the specific, repeatable changes that separate a deck that looks designed from one that looks like a wall of bullet points. None of them require a design background, just a willingness to override the template you were handed.

Work through them in order the first few times. After a couple of decks, the good habits stick and you stop reaching for the defaults at all. For the wider picture of how an entire presentation comes together, our complete presentation design guide ties these slide-level decisions to structure and storytelling.

Start With Layout and Spacing

Layout is the foundation. Get the placement of elements right and everything else gets easier.

1. Turn on guides and a grid. View > Guides, then drag in margins about 0.5 in from each edge. Keeping content inside a consistent margin instantly reads as intentional rather than scattered.
2. Give every slide a generous margin. The single fastest upgrade is empty space. Stop filling the slide edge to edge; let elements breathe and the eye relaxes.
3. Align everything. Use the Arrange > Align tools to snap elements to shared edges and centers. Misaligned boxes are the clearest signal of an amateur deck, and they are invisible to you until you check.
4. Limit yourself to one idea per slide. If a slide needs two headlines, it is two slides. More slides with less on each beats fewer dense ones, every time.
5. Use a consistent layout system. Pick a small set of layouts, title slide, section divider, one-column, two-column, full-bleed image, and reuse them. Consistency is what makes a deck feel like one document.

If layout is where you struggle most, our roundup of slide layout ideas for clean presentations gives you ready-made structures to drop content into.

Fix Your Typography

Type carries most of the meaning on a slide, so it deserves more than the default 18 pt Calibri.

6. Use two typefaces at most. One for headings, one for body, or even a single family in two weights. Inter, Source Sans, and Lato are clean, free, and read well projected.
7. Set type bigger than feels comfortable. Body text should rarely drop below 24 pt; headlines 36 pt and up. If it fits comfortably, it is probably too small for the back row.
8. Cut the bullet points. Replace lists of full sentences with short phrases, or break them across multiple slides. Bullets are a thinking tool, not a presentation format.
9. Left-align body text. Centered paragraphs are hard to read because every line starts in a different place. Reserve centering for short titles.
10. Increase line spacing slightly. Bump line spacing to about 1.1 to 1.2x. Tight default leading makes blocks of text feel cramped.

Pairing fonts well is its own small skill. We have a tested set of combinations in our guide to PowerPoint font pairings that work specifically at presentation scale.

Build a Restrained Color System

Color is where decks go wrong fastest, usually from using too much of it.

11. Define a palette before you start. One neutral (near-black for text), one light background, and one or two accent colors. Set them in Design > Variants > Colors so they are one click away.
12. Use accent color sparingly. Color should direct attention, the one number that matters, the key word in a headline. When everything is colorful, nothing stands out.
13. Avoid pure black on pure white. A very dark gray (around #1A1A1A) on an off-white background is easier on projected eyes than harsh #000 on #FFF.
14. Check contrast for the room. Projectors wash out color. Light gray text that looks fine on your monitor disappears on a screen, so keep text-to-background contrast high.

Choosing a palette that holds up under a projector is worth doing deliberately. Our piece on presentation color schemes that work covers combinations that survive bad AV.

Use Images and Icons Properly

15. Go full-bleed with photos. A strong image filling the entire slide, with a short headline over a dark overlay, looks far more polished than a small photo floating in a box.
16. Only use high-resolution images. Stretched, blurry, or visibly compressed photos undo everything else. Pull from Unsplash or Pexels (both free) rather than tiny web grabs.
17. Keep one icon style. Mixing flat, outline, and 3D icons looks chaotic. Pick a single set, the Noun Project and Flaticon both offer consistent families, and stick to it.
18. Add a subtle overlay for text on images. A semi-transparent dark or brand-colored rectangle over a photo keeps overlaid text readable without hiding the image.

Tame Charts and Data

Default PowerPoint charts are cluttered. Stripping them down makes your data clearer.

19. Delete chart junk. Remove gridlines, the legend (label directly instead), heavy borders, and 3D effects. Keep the data and one accent color highlighting the point you are making.

Be Disciplined With Animation

20. Use one transition, and only simple builds. Pick a single subtle transition (Fade or Push) for the whole deck. For builds, appear and fade are enough, skip spins, bounces, and flying text. Motion should reveal content in sequence, never decorate it.

Build a Master Slide So It Stays Consistent

Most of these tips only hold across a long deck if you bake them into the structure rather than reapplying them slide by slide. That is what the Slide Master is for, and almost nobody uses it. Open View > Slide Master and set your fonts, colors, default text sizes, and placeholder positions once. Every new slide then inherits them, so your margins, type, and palette stay identical from slide one to slide forty without manual effort.

The payoff compounds on revisions. When a client asks to change the accent color or swap the heading font across the whole deck, a properly built master is a single edit instead of an hour of slide-by-slide cleanup. Set up two or three master layouts, title, content, and a full-bleed image layout, and you have a small template that enforces consistency for you.

A Quick Polish Pass Before You Present

Before any deck goes out, run a fast consistency check. These are the details that quietly separate finished work from a draft:

• Scan for alignment drift. Click through in slide-sorter view and watch whether titles sit in the same place on every slide. Jumping headers are the most visible inconsistency.
• Check spacing between repeated elements, the gaps in your three-column layouts and icon rows should be identical, not eyeballed.
• Confirm one font and one palette. Stray default Calibri or an off-palette blue from a pasted chart breaks the whole illusion of a designed deck.
• Look at it at presentation size. View it full-screen and step back, small type and low-contrast text reveal themselves immediately at real scale.

This pass takes five minutes and catches the errors an audience notices first. It is the cheapest quality upgrade available.

Apply even half of these and your slides jump a tier. The throughline behind all twenty is restraint: fewer fonts, fewer colors, less text, more space. PowerPoint will happily let you do the opposite, which is exactly why doing less is such a reliable shortcut to slides that look professionally designed. Pair restraint with a master that enforces it, and a clean deck stops being something you fight for on every slide and becomes the default.

Frequently Asked Questions

How do I make PowerPoint slides look more professional?

Start with three changes: add generous margins and white space, cut text down to short phrases instead of full-sentence bullets, and limit yourself to two fonts and a two-color palette. Align every element using PowerPoint’s Align tools. Together these remove the clutter that makes default decks look amateur.

What font size should I use in PowerPoint?

Keep body text at 24 pt or larger and headlines at 36 pt and up. If text fits comfortably on the slide, it is usually too small for people at the back of the room. Bigger type also forces you to write less, which improves the slide.

How many colors should a PowerPoint slide use?

Build your deck around a restrained palette: one dark neutral for text, one light background, and one or two accent colors. Use the accent only to draw attention to the most important element on a slide. Too many colors compete for attention and make slides look disorganized.

Are bullet points bad in PowerPoint?

Bullet points are not banned, but lists of full sentences are. Replace long bullets with short keyword phrases, a single image, or split the content across several slides. Bullets work as a quick scannable summary, not as a script for you to read aloud.