Features
Everything you need to create professional e-books, paperbacks, and hardcovers
Rich Text Editor
- Bold, italic, underline, strikethrough
- Subscript and superscript
- H1–H6 headings
- Ordered and bullet lists
- Hyperlinks
- Inline images
- Customizable font and font size
- Emoji picker
- Page breaks and section breaks
- Ornamental breaks
- Smart quote replacement
Elements to Design Your Book
- Callout boxes
- Tables with size selector
- Text conversations (SMS/chat styling)
- Block quotes
- Handwriting blocks
- Academic-style footnotes and endnotes
- Drop caps
- Chapter images
- Customizable running headers and footers (section title, subtitle, author name, book title, page number)
Print Settings
- Multiple standard trim sizes
- Custom margins (top, bottom, inside, outside)
- Gutter settings for binding
- Full bleed support
- Header and footer configuration
- Page numbering options
- Per-section header/footer control
- Per-page background images
- Widow/orphan control
- Body text line spacing
- Text justification options
- Hyphenation control
Section Management
- Canva-like title page designer
- Hierarchical book structure
- Drag-and-drop reordering
- E-book-only or print-only sections
- Easy access menu (delete, rename, clone)
- Book parts to organize your book
- Real-time word count per section
- Construct fully customizable box sets from multiple volumes
- Fully customizable per-section settings
Import & Export
- Import DOCX to new or existing project
- Auto-detect section types
- Import from other Lacuna projects (sections, presets, styles)
- EPUB 3.0 and EPUB 2.0 export
- Kobo-specific EPUB export
- Print-ready PDF (PDF/X-1a)
- RGB (B&W) or CMYK (full color) PDF
- PDF for reader magnets
- Pre-export preflight checks
Styling & Themes
- Simple theme editor with live preview
- One-click premade styles
- Hundreds of fonts to choose from
- Section title and subtitle styling
- Full color control for body paragraphs, main titles, subtitles, and drop caps
- Drop caps customization
- First paragraph styling options
- Chapter numbering (spelled, numbered, roman numeral)
Preset System
- Create unlimited presets per book project
- Duplicate and modify presets
- Organize presets into groups
- Quick preset selection dropdown
- Section title, subtitle, spacing presets
- Page layout, callout box, blockquote presets
- Drop cap, ornamental break, list, table presets
Device Preview
- Mobile, tablet, desktop simulation
- Real EPUB rendering
- Print layout PDF preview
- Light/dark theme toggle for e-books
- Custom background and foreground colors for every preview page
- Multiple device specifications
Image Management
- Full image gallery with folders
- Organize and manage images in folders
- Alt text editor
- Bulk alt text update
- Inline images in content
- Image floating left and right
- Background images on any print page
- Background images behind headings
- Full-page images with full bleed
- Images behind text
- Automatic image splitting for backgrounds
- Heading images per section or all chapters
History & Undo
- Unlimited undo and redo
- Visual timeline of all edits
- Jump to any point in history
- Undo/redo to specific point
- Action descriptions
Search & Navigation
- Full-text search across all content
- Search for specific element types
- Find and replace
- Section and chapter navigation
App Features
- Auto-update checks
- Zen mode (distraction-free)
- Dark and light mode
- Keyboard shortcuts
- Autosave
- Guided tours and onboarding
Per-Section Customization
Override any style setting for specific sections. Apply custom title styles, spacing, drop caps, and more to individual sections without affecting the rest of your book.
Section-Level Overrides
- • Custom title preset per section
- • Custom subtitle preset per section
- • Custom spacing per section
- • Drop cap and indentation per section
- • Page backgrounds per section
- • Headers and footers per section
- • Page numbering per section
Batch Operations
- • Bulk apply settings to multiple sections
- • Reset to defaults with one click
- • Show/hide title, subtitle, image per section
- • Per-section header/footer control
Ready to get started?
Download Lacuna and start formatting your book today. Free trial available.