What image size does Amazon KDP require for eBook covers?

Amazon KDP requires cover images with a minimum of 1000px on the longest side and an ideal height-to-width ratio of 1.6:1. For a 6x9 inch cover, that's approximately 2700x1800px at 300 DPI, but for digital-only eBooks, 2048px wide is sufficient.

Should I use PNG or JPEG for my eBook cover thumbnail?

JPEG is standard for most eBook storefronts and produces smaller file sizes for photographic or illustrated covers. Use PNG if your cover has flat colors or fine typography where lossless sharpness matters.

Can I use this tool if I only have the final PDF and not the original design file?

Yes. Deliteful renders directly from the PDF, so you don't need access to the original Canva, InDesign, or Photoshop source file to produce a cover image.

Will the cover image maintain the correct aspect ratio for my eBook format?

Yes. Aspect ratio is preserved automatically from the original PDF page dimensions. A standard 6x9 portrait eBook cover will render as a portrait image at whatever width you specify.

Generate eBook Cover Thumbnails from PDF Files for Digital Storefronts

Authors and content creators publishing eBooks need a high-quality cover image for Amazon KDP, Gumroad, Payhip, and promotional channels — but the final eBook is often delivered as a PDF, not a separate cover image file. Deliteful renders any page of your eBook PDF as a PNG or JPEG thumbnail up to 2048px wide, giving you a storefront-ready cover image directly from your finalized file.

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eBook platforms universally require a separate cover image file — Amazon KDP requires a JPEG or TIFF at a minimum of 1000px on the longest side and a 1.6:1 height-to-width ratio; Gumroad and Payhip recommend cover images at least 1280px wide. If your eBook was designed in Canva or InDesign and exported to PDF, you may not have a standalone cover image at the right resolution. Deliteful closes this gap: upload the PDF, render page 1 at 2048px wide, download a JPEG — done.

For eBook covers, JPEG is typically the correct output format, as most storefronts specify JPEG for cover uploads and the file size is smaller than PNG for photographic or illustration-heavy cover designs. PNG is the better choice if your cover uses flat color, crisp typography, or graphic elements where lossless compression matters. Transparent backgrounds are converted automatically for JPEG output.

How it works

1
Upload your eBook PDF
Upload the finalized PDF file for your eBook.
2
Set page to 1 for the cover
Enter page 1 to render the cover page — or a different page if your cover is on a different page of the PDF.
3
Set width to 2048px and choose JPEG
Enter 2048 as the max width for maximum resolution, and select JPEG for most storefront uploads (or PNG for flat-design covers).
4
Download and upload to your storefront
Download the cover image and upload it directly to Amazon KDP, Gumroad, Payhip, or your promotional channels.

Frequently asked questions

What image size does Amazon KDP require for eBook covers?: Amazon KDP requires cover images with a minimum of 1000px on the longest side and an ideal height-to-width ratio of 1.6:1. For a 6x9 inch cover, that's approximately 2700x1800px at 300 DPI, but for digital-only eBooks, 2048px wide is sufficient.
Should I use PNG or JPEG for my eBook cover thumbnail?: JPEG is standard for most eBook storefronts and produces smaller file sizes for photographic or illustrated covers. Use PNG if your cover has flat colors or fine typography where lossless sharpness matters.
Can I use this tool if I only have the final PDF and not the original design file?: Yes. Deliteful renders directly from the PDF, so you don't need access to the original Canva, InDesign, or Photoshop source file to produce a cover image.
Will the cover image maintain the correct aspect ratio for my eBook format?: Yes. Aspect ratio is preserved automatically from the original PDF page dimensions. A standard 6x9 portrait eBook cover will render as a portrait image at whatever width you specify.

Create your free Deliteful account with Google and generate a storefront-ready eBook cover image from your PDF in seconds.