2026 eBook Cover Dimensions & Pixel Density Reference – Complete
Specific Pixel sizes, aspect ratios (1.6:1 v 2:3), and file size limits with Amazon KDP, Kobo, Apple Books and Google Play.
2026 eBook Cover Spec Reference
When referencing ebook cover dimensions 2026, choosing the right kindle cover size pixels and matching the kobo cover aspect ratio are crucial for ensuring that cover previews don't look blurry, thumbnails don't appear distorted, or that there is letterboxing for your ebook covers, whether you are creating covers for your own ebook library or for an independent publishing release.
The current main platform matrix of dimensions is as follows:
| Platform / Device | Recommended Size | Aspect Ratio | Color Space | Maximum File Size |
|---|---|---|---|---|
| Amazon Kindle (KDP / Scribe) | 2560 × 1600 px | 1.6:1 (8:5) | sRGB / 24-bit JPEG | 50 MB |
| Kobo (Elipsa, Libra, Clara) | 2400 × 1600 px | 1.5:1 (3:2) | sRGB / JPEG or PNG | 5 MB |
| Apple Books (iOS / macOS) | 2400 × 1800 px | 1.33:1 (4:3) | RGB / 300 DPI JPEG | 10 MB |
| Google Play Books | 2560 × 1600 px | 1.6:1 (8:5) | sRGB / JPEG | 10 MB |
| Universal Safe Harbor | 2560 × 1600 px | 1.6:1 | sRGB / 72–300 DPI | 2–5 MB |
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The Golden Ratio: Why 1.6:1 (2560 × 1600 px) is the Universal Choice
When you want a one-size-fits-all cover image that won't get cut off on any device:
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Fixing the “Missing Cover” Bug on Kindle Send-to-Kindle
A common annoyance with sending EPUBs to Kindle is that the cover art does not appear in the library grid, but rather a default document image.
Semantic cover metadata is missing, causing this issue. To make sure your cover will be displayed on every Kindle device:
<item id="cover-image" href="images/cover.jpg" media-type="image/jpeg" properties="cover-image" /><meta name="cover" content="cover-image" />Ready to convert your eBooks with zero cloud uploads?
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