eBook Design Basics: What Makes a PDF Look Professional When You're Not a Designer

What makes an eBook PDF look professional when you're not a designer? (1) Typography — One body font, one heading font (or one font family). Consistent size and weight. (2) Spacing — Margins so the page doesn't feel cramped; space between sections. (3) Structure — Clear hierarchy: title, chapters, sections. Table of contents. (4) Consistency — Same treatment for every chapter opener and body. No random font or size changes. You don't need custom graphics. You need clear hierarchy, readable type, and a consistent system.

"Professional" doesn't mean "fancy." It means clear, consistent, and readable. You can get there without a designer if you follow a few rules.

This guide is design basics for eBook PDFs—with a checklist and what to do next. For structure (chapters, sections) see how to structure an eBook. For creating the PDF see eBooks without design skills.

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Typography

Element	Rule
Body	One font, one size (e.g. 11–12 pt). Serif or sans-serif; pick one and stick to it.
Headings	One font (can be same family, different weight). Chapter titles larger; section titles smaller. Consistent.
Don't	Mix many fonts. Use tiny type (below 10 pt for body). Use decorative fonts for long text.

Simple combo: One sans-serif (e.g. Inter, Open Sans) for everything: bold for titles, regular for body. Or one serif (e.g. Georgia, Lora) for a more "book" feel.

Spacing

• Margins — At least 0.5–1 inch (or 15–25 mm) on all sides. Cramped margins feel cheap.
• Between sections — Space after headings; space between paragraphs. White space = readability.
• Line height — Body text: 1.2–1.5× the font size. Too tight = hard to read.

Structure (hierarchy)

• Title — Biggest. Centered or left. One clear line.
• Chapters — Clear chapter title. Same style every time.
• Sections — H2/H3. Smaller than chapter; same style across the book.
• Body — Same font and size. No random bold unless it's for emphasis.

Readers should see the structure (title → chapter → section) without thinking. That's hierarchy. For full structure see how to structure an eBook.

Table of contents

• Place — After title page (or short intro).
• Content — Chapter titles (and optionally key sections). Page numbers if your tool adds them.
• Style — Same font as body or headings. Clear and scannable.

For 20+ pages, a TOC is expected. See long-form PDF tool comparison.

Consistency checklist

• Same body font and size throughout.
• Same heading style for all chapters and sections.
• Same margin and spacing system.
• No one-off "special" pages with different fonts or layout (unless it's intentional, e.g. part opener).

Common mistakes

1. Too many fonts. Two is enough (one for body, one for headings—or one family, two weights).
2. No margins. Text to the edge. Add margins.
3. No TOC. Long eBook with no map. Add one. See how to structure an eBook.
4. Inconsistent headings. Chapter 1 is big and bold; Chapter 2 is small. Same style every time.

Our recommendation

One font system, clear hierarchy (title → chapter → section), margins and spacing that breathe, TOC for 20+ pages. Run the consistency checklist before you export. For structure and outline see how to structure an eBook and eBook outline template. For creating the PDF see eBooks without design skills and best tool for eBooks and long-form PDFs.

What to do with this information

1. Lock typography — One body font, one heading style. Use the typography table above.
2. Set margins and spacing — At least 0.5–1 inch margins; space between sections; line height 1.2–1.5×.
3. Use clear hierarchy — Title, chapters, sections. Same style every time. See how to structure an eBook.
4. Add TOC — For 20+ pages. For structure see how to structure an eBook.
5. Run the checklist and build the PDF — Use a long-form PDF tool. See eBooks without design skills.

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To generate a laid-out eBook PDF with consistent typography and TOC, you can try BuildPDFs. No commitment.