Your book cover is the single most powerful marketing tool your book has — it determines whether a potential reader pauses to look, and whether they ultimately buy. Whether you are self-publishing on Amazon Kindle, Gumroad, or distributing a PDF, a compelling, professional book cover is non-negotiable. At imgresizr.com, you can create book cover images at the correct dimensions for any platform, completely free.
Book Cover Specifications by Platform
| Platform | Recommended Size | Ratio |
|---|---|---|
| Amazon Kindle (KDP) | 1600×2560px minimum | 1:1.6 (5:8) |
| Gumroad / Payhip | 1500×2100px | 5:7 |
| PDF e-book | 1240×1754px (A4) | A4 |
| Print-on-demand | 300dpi at print size | Varies |
How to Create Book Covers at imgresizr.com
Upload your background image or create a canvas at your target dimensions. For Kindle, set 1600×2560px using the Resize tool. Use the Enhance tool to ensure your background imagery is vibrant and eye-catching. Use the Caption tool to add: the book title (large, dominant text at the top or centre), the subtitle (if any), and the author name (at the bottom). The title should be legible as a thumbnail — test by viewing your cover image at 100×160px to simulate the smallest Amazon thumbnail size. Use contrasting text colours and consider a semi-transparent text backing for readability on complex background images. Export as JPG for digital platforms.
Book Cover Design Tips
- Research your genre — book covers have strong visual conventions that readers use to identify books they will enjoy
- Your title must be legible at thumbnail size — this is how 90% of potential readers first see it
- Avoid too many elements — great book covers are often strikingly simple
- Test your cover on the actual platform (Amazon preview tool) before publishing
- A/B test different covers if your platform allows it — cover changes can significantly impact sales
Create professional book covers for Kindle, Gumroad, and PDF at the right dimensions, free at imgresizr.com.