Typography Is the Soul of Presentation Design
Let me be blunt: most people’s presentations aren’t ugly because of bad “design” — they’re ugly because of bad typography. Three hundred words crammed into one slide, font sizes jumping from 8pt to 48pt with no logic, line spacing that expands and contracts like an accordion.
Keynote is naturally better at typography than PowerPoint. Apple’s typographic DNA — the San Francisco font family, precise kerning, intelligent alignment guides — means that if you don’t actively mess things up, the default typography is already decent. But “decent” isn’t “good.” If you want to hit the 75th percentile and above, you need to understand a few principles.
Principle 1: Never More Than Two Fonts
This is law. One presentation, two fonts:
- A headline font — bold, with personality
- A body font — clean, highly readable
Recommended combinations:
- English presentations: Inter Bold (headlines) + Inter Regular (body). Same family, zero visual conflict.
- Chinese presentations: PingFang SC Bold (headlines) + PingFang SC Regular (body)
- Creative presentations: Playfair Display (headlines) + Source Sans Pro (body). Elegant contrast without chaos.
- Technical presentations: IBM Plex Sans Bold (headlines) + IBM Plex Sans Regular (body). Crisp, functional, authoritative.
What to absolutely never do: use three or more fonts on one slide. The audience won’t be able to articulate why, but their subconscious will register “this feels chaotic.”
Principle 2: Establish a Clear Typographic Hierarchy
Every slide’s font sizes should follow a predictable pattern. Here’s my battle-tested scale:
| Hierarchy Level | Font Size | Use Case |
|---|---|---|
| Hero headline | 60–80pt | Cover slides, section dividers |
| Page title | 36–44pt | Top-of-page titles on content slides |
| Subheading | 24–28pt | Section labels within a content page |
| Body text | 18–22pt | Main content, bullet points |
| Footnotes/sources | 10–12pt | Bottom-of-page attribution |
A practical test: export your presentation as PDF, scale it to A4/letter size paper, print it, and hold it 50cm (20 inches) away. If you can’t comfortably read the body text, your font sizes are too small for projection.
Never go below 16pt for body text in a presentation. What looks readable on your laptop at arm’s length becomes illegible on a projector 5 meters away.
Principle 3: Line Spacing Is a Hidden Quality Indicator
Keynote’s default line spacing is 1.0×. For body text, that’s too tight — it feels cramped and makes reading effortful.
- Body text: 1.3–1.5× line spacing is the comfort zone. At 1.5×, readers can track from the end of one line to the start of the next without losing their place.
- Headlines: 1.0–1.2× is sufficient. Headlines are short enough that tight spacing doesn’t hurt.
- Bullet lists: 1.2–1.3×. Denser than paragraphs but still need breathing room between items.
How to adjust: select text → Format panel → Text → Spacing → adjust the “Line Spacing” dropdown.
Advanced technique: paragraph-after spacing matters more than line spacing. Set “After Paragraph” to 8–12pt rather than just cranking up line spacing. The visual separation between paragraphs is clearer and more intentional.
Principle 4: Alignment, Alignment, Alignment
Roughly 80% of typographic problems in Keynote come down to alignment issues.
- Body text: Left-align. Do NOT use justified alignment — Keynote’s justified text stretches word spacing in ugly ways, especially with shorter line lengths.
- Headlines: Left-align or center, depending on page layout. Center-aligned headlines work on cover slides and section dividers. Left-aligned headlines work better on content pages where the eye starts at the left edge.
- Numbers: Right-align. This makes it easy to compare magnitudes at a glance — the decimal points (or last digits) stack vertically.
- Short list items: Left-align.
The alignment test: click any element on your slide and watch for the yellow alignment guides Keynote shows. If no guide appears, that element isn’t aligned with anything else on the page. Fix it.
Principle 5: Contrast Determines Readability
Whether text is legible depends not on font size, but on contrast ratio.
- Dark background + white text: Maximum readability. The high contrast makes text pop even at smaller sizes.
- White background + dark gray text (#333333): The most comfortable for reading. Skip pure black (#000000) — it’s too harsh on screens.
- Light gray background + medium gray text: A readability disaster. Don’t do this.
- Text on top of images: If your background photo is busy, add a semi-transparent dark overlay (40% opacity) behind the text. Without it, half your text will be unreadable against whatever colors happen to be in the photo.
A quick check: squint at your slide. If you can no longer read the text comfortably, your contrast is insufficient.
Keynote-Exclusive Typography Features
1. Text Inset Adjustment
Select a text box → Format → Text → Layout → adjust “Text Inset.” The default inset is sometimes too generous — reducing it to 4–6pt gives you more usable text area without making things look cramped.
2. Linked Text Boxes
Keynote can “link” multiple text boxes so overflow text from the first box automatically flows into the second. Useful for multi-column layouts or when you want text to continue across sections of a slide.
3. Text on a Path
Select text → Format → Arrange → “Text Path” → choose Arc or Wave. Creates curved headlines. Use this sparingly — once per presentation is enough. It’s the typographic equivalent of an exclamation mark.
Common Typography Mistakes
- Asymmetric text box padding: Use Cmd+A to select everything, then check the inset values. Uneven padding looks amateur.
- English text looking too small next to Chinese: In mixed-language slides, English characters visually appear smaller than Chinese characters at the same point size. Bump English up by 1–2pt.
- Bullet-to-text spacing too wide: Adjust “Text Indent” rather than manually adding spaces. Manual spaces break alignment when fonts change.
- Text flickering during Magic Move: Ensure text boxes are identical in dimensions between the two slides. Even 1px difference causes visible jitter.
Summary: The Three Tiers of Keynote Typography
There are three levels of typography mastery in Keynote:
- Bronze: Use default settings. Don’t touch fonts or sizes. (This is where 60% of people stay.)
- Gold: Standardize fonts and establish a clear size hierarchy. You’re now ahead of 80% of presentation makers.
- Platinum: Add line spacing, contrast optimization, and pixel-perfect alignment. This is designer territory — aspirational but not necessary for most scenarios.
Most people never leave Bronze. Getting to Gold is a one-time investment of maybe 30 minutes that pays off in every presentation you’ll ever make. Platinum is nice to have, but Gold is where the real professional leap happens.