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KDP Book Cover Size: A Guide to Amazon's Technical Specifications
You’ve written your book, and now you’re ready to create its most important marketing tool: the cover. But before you can upload it to Amazon Kindle Direct Publishing (KDP), your cover must meet a precise set of technical size and format specifications. An incorrectly sized cover will be rejected by the KDP platform, causing frustrating delays in your launch.
Understanding the KDP book cover size requirements is a non-negotiable technical step. The specifications for an ebook cover are completely different from those for a paperback, and you will need to create two separate files. This guide will break down the exact dimensions and requirements for both.
Key Takeaways & Summary
Two Separate Files are Required: You need a front cover only (as a JPEG) for your ebook and a full wraparound cover (as a PDF) for your paperback.
Ebook Cover Size is Fixed: The ideal dimension for a KDP ebook cover is 2,560 pixels in height x 1,600 pixels in width.
Paperback Cover Size is Variable: The size of your paperback cover depends on your chosen trim size, your final page count (which determines spine width), and whether you include a bleed.
Use KDP’s Official Calculator: For paperbacks, the best practice is to use Amazon’s free Cover Calculator tool to generate a precise template for your designer.
The KDP Ebook Cover Size Specifications
The ebook cover is a single image of the front cover. Its primary job is to look great as a thumbnail in the Kindle store.
Ideal Dimensions: 2,560 pixels (height) x 1,600 pixels (width). This creates an ideal aspect ratio of 1.6:1, which is what Amazon recommends.
Minimum Dimensions: While the ideal is recommended, the minimum acceptable size is 1,000 x 625 pixels.
File Type: JPEG or TIFF.
Color Mode: RGB (as it is for on-screen viewing).
Resolution: 72 DPI is acceptable for ebooks, but 300 DPI is recommended for the highest quality.
A professional designer will always provide you with a high-resolution file that meets these exact specifications as part of our book cover design services.
The KDP Paperback Cover Size Specifications
The paperback cover is more complex because it is a physical product. It’s a single, flat image that includes the front, back, and spine.
The final size is determined by three key factors:
Trim Size: This is the final dimension of your printed book (e.g., a 6″ x 9″ paperback).
Page Count: The number of pages in your final, formatted interior file determines the thickness of the book, and therefore the width of the spine.
Bleed: This is an extra 0.125 inches of your cover image that extends beyond the trim lines on the top, bottom, and outer edges. It is required for any images or colors that you want to extend all the way to the edge of the page, ensuring there are no white borders after printing.
File Type: Print-Ready PDF.
Color Mode: CMYK (as it is for printing).
Resolution: 300 DPI is required.
The Essential Tool: KDP’s Cover Calculator
Because the paperback cover size is so precise and variable, you should not guess. Amazon provides a free and essential tool to give you the exact dimensions.
How it works: Go to the KDP Cover Calculator. You will enter your book’s binding type (paperback), interior type (black & white or color), paper type (cream or white), trim size, and final page count.
What it gives you: The tool will generate a downloadable template (in PNG, PDF, and ZIP formats) that shows the exact, precise dimensions for your full cover, including the spine width, bleed lines, and barcode placement. You give this template to your designer.
This step is a critical part of a professional Amazon KDP publishing process. As publishing resources like IngramSpark’s blog also emphasize, using a printer’s official templates is the only way to guarantee a perfectly formatted print file.
Short FAQ
Q: Can I use the same cover file for my ebook and my paperback?
A. No, absolutely not. The ebook requires a single JPEG of the front cover, while the paperback requires a full wraparound PDF with a spine and back cover. They are completely different files.
Q: What happens if I get the paperback cover size wrong?
A. If your file is the wrong size, has the wrong spine width, or doesn’t have the correct bleed, it will be rejected by the KDP upload process. You will not be able to publish your book until you provide a file with the correct specifications.
Q: What does DPI mean?
A. DPI stands for “Dots Per Inch.” It is a measure of print resolution. 300 DPI is the industry standard for high-quality, professional printing, ensuring your cover images are sharp and not pixelated. Visit Bridge Publisher
