Book cover size, print, and design guides
Use clear, sourced guidance for KDP dimensions, ebook files, spines, hardcovers, Canva workflows, and common print problems.
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KDP cover size: the definitive paperback and hardcover guideA KDP print cover is one PDF containing the back, spine, and front. Paperback width equals two trim widths plus the calculated spine plus 0.25 inches of total outer bleed; height equals trim height plus 0.25 inches.Book cover dimensions for ebook, paperback, hardcover, and audioThere is no single universal book-cover size. Ebook dimensions are measured in pixels, print covers depend on trim, page count, paper, and binding, and audiobook platforms use square artwork.Ebook cover size: pixels, ratio, file type, and thumbnail checksAmazon currently lists 2,560 pixels high by 1,600 pixels wide as its ideal ebook-cover dimensions, with a 1.6:1 height-to-width ratio. JPEG and TIFF are accepted; RGB is the correct color profile.Book spine width explained: page count, paper, and safe typeA paperback spine is calculated from the final page count multiplied by the paper-specific thickness. Even a small pagination change alters the full-wrap width.IngramSpark vs KDP covers: why one PDF may not fit bothKDP and IngramSpark both need a full print wrap, but their templates, paper stocks, binding options, barcode treatment, and production tolerances are provider-specific. Generate the cover from the selected printer's current template rather than recycling one PDF blindly.Hardcover cover anatomy: case laminate, hinges, wrap, and jacketsA case-laminate hardcover cover is larger than two trim panels plus a paperback spine. It needs board allowance, hinge zones, and material that wraps beyond the visible board.KDP cover problems: fix size, bleed, spine, barcode, and text errorsMost KDP cover rejections trace back to the wrong full-wrap size, missing bleed, unsafe text, an outdated page count, or spine text on a book below the threshold.How to make a book cover that works online and in printStart with the reader promise, not the decoration. Research the current shelf, select one dominant concept, establish title hierarchy at thumbnail size, then adapt the same structured design to the exact production format.How to make a book cover in Canva—and when to use a print calculatorCanva is useful for visual composition, but a print cover still needs exact full-wrap dimensions. Calculate the sheet first, create a custom-size canvas, import the provider template as a locked guide, and export one print PDF.How to make a book spine in Canva without guessing the widthThe spine is not a fixed-width rectangle. Calculate it from page count and paper, then add it between equal front and back panels inside one custom-size Canva document.Audiobook cover size: ACX dimensions and file checksACX currently requires square 1:1 cover art at least 2,400 × 2,400 pixels, in JPG, PNG, or TIF format, using RGB color and no more than 8 MB. The title and author must appear clearly.How to write a book blurb: hook, conflict, and stakesA book blurb is persuasive copy, not a complete synopsis. Lead with a hook, establish the protagonist or reader problem, sharpen the conflict and stakes, and stop before resolving the question that makes someone open the book.