
Showcase your thick paperback book cover designs with a realistic Demy softcover book mockup, created specifically for the popular 138 × 216 mm (5.43 × 8.5 inch) UK Demy book format.
This Photoshop Action mockup features a 31 mm (1.2 inch) wide spine, giving your book the substantial thickness needed for novels and other larger page-count publications.
3 Realistic Mockup Styles
Choose from 3 different mockup styles, each offering multiple viewing angles to help you present your book cover design in a realistic and professional way.



Ready-Made PSD Template Included
No need to create the book cover setup from scratch.
A ready-made PSD template is included, already fitted to the correct book dimensions and spine width. Just place your cover artwork into the template, then run the Photoshop Action to quickly create your realistic 3D book mockup.




Cover Actions Requirement & Compatibility:
** ENGLISH Version Adobe Photoshop CS2, CS3, CS4, CS5, CS6, CC up to Photoshop 2026 pre-installed on Microsoft Windows OR Apple Mac OS.
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Designed for the Demy Book Format
Trim Size: 138 × 216 mm (5.43 × 8.5 inches)
Book Type: Softcover / Paperback
Orientation: Portrait / Vertical
Spine Width: 31 mm (1.2 inches)
Format: UK Demy
The wide 31 mm spine makes this mockup especially useful for thick paperback books, where showing realistic book thickness can make a big difference in your presentation.
Perfect for
Use this Demy softcover book mockup to showcase:
- Novels
- Journals
- Workbooks
- Planners
- Manuals
- Guides
- Self-published books
- Fiction & nonfiction books
- Other thick paperback publications
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