To format a horror novel for KDP, use a 5”×8” or 5.5”×8.5” trim on cream paper, a clean serif font at 10.5–11pt with tight line spacing (1.3–1.4×), and understated scene breaks — horror’s tension comes from pacing, and the interior design should amplify unease, not distract with ornamentation. A typical 80,000-word horror novel produces ~310 pages at 5×8 or ~280 pages at 5.5×8.5. Horror is growing fast on KDP — BookStat data shows horror ebook sales up 42% since 2023, and print follows.
Trim size
| Subgenre | Recommended Trim | Why |
|---|---|---|
| Psychological horror | 5” × 8” | Intimate, claustrophobic feel |
| Cosmic / Lovecraftian | 5.5” × 8.5” | Slightly more substantial |
| Horror thriller | 5” × 8” | Fast-paced, compact |
| Literary horror | 5.5” × 8.5” or 6” × 9” | More prestige feel |
| Short horror / novellas | 5” × 8” | Fills pages, feels substantial |
The compact 5×8 size creates a subconscious feeling of intimacy that suits horror — the reader holds the book close, the pages are dense, the experience is immersive. It’s the same reason horror movies use tight framing.
Use the KDP Book Calculator to compare page counts at each trim.
Fonts for horror
Horror interiors should feel slightly unsettling — but readable. The unease comes from the story, not from a “creepy” font.
Body text
- Garamond — slightly antiquated feel, works for gothic and classic horror
- Caslon — warm but formal, good for literary horror
- Baskerville — clean, precise, works for modern horror and thriller-horror
- Bembo — historical feel, excellent for gothic and period horror
Set at 10.5–11pt with 1.3–1.4× line spacing. Slightly tighter spacing than romance or literary fiction — it creates denser pages that match horror’s intensity.
What NOT to use
- Decorative “horror” fonts (Chiller, Creepster) — never. Not even for chapter headings.
- Sans-serif body text — reads as technical, not literary
- Very large fonts — horror benefits from denser pages
Preview at your trim size with the Book Fonts tool.
Scene breaks and pacing
Horror relies on rhythm — the build, the pause, the reveal. Scene breaks control that rhythm.
Best scene break styles for horror:
- Extra blank line (one line space) — minimal, lets the silence speak
- Single centered asterisk — barely there, subtle
- Three asterisks ( * * * ) — standard, invisible to the reader
- Thin horizontal rule — clean, modern
Avoid: ornamental dividers, flourishes, decorative dingbats. These break the mood. Horror scene breaks should be nearly invisible — a pause in the text, nothing more.
Chapter styling
Horror chapter openings should be simple:
- Chapter number only — “Chapter 7” or just “7”
- No chapter titles works well for horror — the unnamed chapter creates unease
- If using titles: keep them short and ominous — “The Basement,” “Night Three”
- Drop caps: can work for gothic horror. Skip for fast-paced modern horror.
- Start new chapters recto (right page) — the blank verso before a new chapter creates a visual pause
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Special formatting elements in horror
| Element | Convention |
|---|---|
| Found documents / letters | Indented, italic or different font |
| Journal entries | Italic, dated, possibly handwriting-style heading |
| Text messages / emails | Monospace or indented block |
| Redacted text | Strikethrough or █ blocks |
| Non-linear timelines | Consistent date/time stamps in chapter headings |
These in-text elements add atmosphere when used sparingly. Keep the visual language consistent — if journal entries are italic in Chapter 2, they must be italic in Chapter 15.
Back matter for horror
- About the Author — keep it brief
- Also By — list your backlist, especially other horror
- Preview chapter of next book — if you’re writing a series or connected universe
- Skip the newsletter pitch in the back matter — horror readers are less responsive to author mailing lists than romance readers. If you do include one, frame it around “get the next book first.”
KDP settings
- Paper: cream (warmer, atmospheric) or white (if you want starker contrast)
- Bleed: no (unless you have full-page illustrations)
- Margins: see 5×8 KDP specs or 5.5×8.5 KDP specs
Related guides
- 5×8 KDP specs — margin and spine specs
- Format a thriller — overlapping conventions
- Scene breaks guide — detailed scene break options
- Best fonts for books — font selection
- KDP Book Calculator — page count and cost