Cover size guide
Best EPUB cover size for Kindle, Apple Books, Kobo, and Google Play
There is no single EPUB cover size that every store requires. The better approach is to choose a preset based on where you plan to publish, then avoid stretching the artwork just to hit a number.
Fit vs fill
If you choose fit mode, the entire source image stays visible and empty space is filled with a background color. If you choose fill mode, the image fills the cover edge to edge, but some edges may be cropped. Both are valid, but stretching is not.
For covers with important text near the edges, start with fit mode. For full-bleed photographic covers, fill mode may look more polished if the crop does not cut off important content.
Quality rule
Use the highest-quality original cover image you have. A tool can resize and package the image correctly, but it cannot magically restore detail from a low-resolution source.
Need to export one of these sizes?
Epub Cover Changer includes platform-ready presets and keeps the image from being stretched.
Change EPUB cover size