{"id":12158,"date":"2026-04-06T19:37:49","date_gmt":"2026-04-06T19:37:49","guid":{"rendered":"https:\/\/www.vappingo.com\/word-blog\/?p=12158"},"modified":"2026-04-06T19:37:49","modified_gmt":"2026-04-06T19:37:49","slug":"kdp-file-rejection-reasons","status":"publish","type":"post","link":"https:\/\/www.vappingo.com\/word-blog\/kdp-file-rejection-reasons\/","title":{"rendered":"KDP File Rejection Reasons: Every Common Error, What Causes It, and the Exact Fix"},"content":{"rendered":"

<\/p>\n

\n
\n
Book Production \u00b7 Vappingo<\/span><\/div>\n
KDP File Rejection Reasons: Every Common Error, What Causes It, and the Exact Fix<\/em><\/div>\n

KDP rejects manuscript and cover files for specific, fixable reasons. This guide covers every common rejection message \u2014 what it means, what causes it, and the exact steps to resolve it so your next upload goes through first time.<\/p>\n

\n\n\n\n
10-minute read<\/span><\/td>\nAll levels<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n

KDP file rejections fall into two categories: technical rejections, where your file fails to meet the format, dimension, or quality specifications required for processing; and content rejections, where the file uploads successfully but Amazon’s review process flags a content compliance issue. Both produce an email from KDP explaining the problem, but the clarity of that explanation varies considerably \u2014 some rejection messages identify the exact issue and location, others describe the category of problem without pinpointing it.<\/p>\n

This guide covers the most common rejection reasons in both categories, what they mean in plain language, and the specific fix for each. For the broader context of KDP’s technical specifications \u2014 margin requirements, trim sizes, bleed settings \u2014 that underlie many print rejections, the KDP manuscript formatting requirements guide<\/a> covers the complete specification set. For ebook-specific errors including TOC failures and image rendering problems, the KDP formatting errors guide<\/a> covers the ebook pipeline in detail.<\/p>\n

\n
\n Stop guessing what sells on Amazon.
\n Find it. Write it. Sell it.<\/span>\n <\/div>\n
\n Real Amazon data + 15+ years of copy expertise\n <\/div>\n
\n
<\/div>\n <\/div>\n
\n
\n
Validate
Before You Write<\/div>\n
Reduce Risk<\/div>\n <\/div>\n
\n
Stop Losing
Money on Ads<\/div>\n
Fix Fast<\/div>\n <\/div>\n
\n
Turn Searches
Into Sales<\/div>\n
Convert More<\/div>\n <\/div>\n <\/div>\n \n Start Finding Profitable Books\n <\/a>\n
\n Powered by Vappingo\n <\/div>\n <\/div>\n \n

Ebook Upload Rejection Reasons<\/h2>\n

“Your file contains formatting or content that is not supported.”<\/strong> This is KDP’s most generic ebook rejection message and covers several underlying causes. The most common is a file format issue \u2014 uploading a file type that KDP doesn’t accept, or an EPUB file that fails structural validation. Verify your file is one of KDP’s accepted types: EPUB, DOCX, KPF, HTML, or RTF. If uploading EPUB, run it through the EPUB Validator at validator.idpf.org<\/a> first \u2014 a failing validation is the most reliable cause of this rejection for EPUB uploads. If uploading DOCX, check that the file isn’t corrupted by opening it freshly in Word and saving a new copy before uploading.<\/p>\n

“Your file contains DRM or is password protected.”<\/strong> The file you’ve uploaded has digital rights management encoding or a password applied to it. PDFs exported from some software apply password protection by default. Fix: re-export the file without password protection. In Acrobat, use File \u2192 Properties \u2192 Security to remove any existing password. In Word, check that you haven’t applied document protection before exporting to PDF.<\/p>\n

“Your cover image does not meet our requirements.”<\/strong> The cover image uploaded separately from the manuscript fails the dimension, format, or aspect ratio requirements. KDP requires a minimum of 1,000 pixels on the shortest side, a height-to-width ratio of approximately 1.6:1, and JPEG or TIFF format. The most common causes are: an image that is too small (below 1,000px on the short side), a square image (wrong aspect ratio), or a PNG file submitted instead of JPEG. Fix: resize and reformat the image to the correct specifications before reuploading.<\/p>\n

“Your manuscript file is too large.”<\/strong> KDP’s ebook file size limit is 650 MB before conversion. Standard text manuscripts are nowhere near this limit, but heavily illustrated books or books with embedded video or audio can approach it. Fix: compress images before embedding \u2014 reduce image file size without sacrificing visible quality using a tool like TinyPNG or Photoshop’s Save for Web function. Remove any embedded media that isn’t essential.<\/p>\n

KDP Print Interior Rejection Reasons<\/h2>\n

“Margins are too small” or “Content is outside the safe zone.”<\/strong> Text, images, or other content extends into KDP’s required margin area. This is the most common print rejection. Cause: margins set below KDP’s minimum for your page count, or headers\/footers\/page numbers placed outside the safe zone. Fix: check KDP’s margin requirements for your specific page count (the minimum inner margin ranges from 0.375 inch for books under 150 pages to 0.875 inch for books over 700 pages) and adjust your document margins accordingly. Verify that page numbers and running headers are inside the safe zone, not at the very edge of the margin.<\/p>\n

“Images are low resolution.”<\/strong> One or more images in your PDF are below KDP’s 300 DPI minimum at the size they’re printed. Fix: replace affected images with 300 DPI versions. If you’ve scaled images up in your layout, the effective DPI drops proportionally \u2014 a 300 DPI image scaled to 150% prints at 200 DPI, below the threshold. Always embed images at or above the size they’ll be printed at 300 DPI.<\/p>\n

“Fonts are not embedded.”<\/strong> Your PDF was exported without embedding the fonts used in the document. Fix: re-export the PDF with font embedding enabled. In Word, use Save As \u2192 PDF \u2192 Options and check the font embedding setting. In Adobe Acrobat, use the Preflight function to verify embedding and repair it if absent. All fonts used in your document must be fully embedded \u2014 including any fonts used in headers, footers, or decorative elements.<\/p>\n

“The file dimensions don’t match the selected trim size.”<\/strong> Your PDF page dimensions don’t match the trim size you selected in KDP’s publishing interface. Fix: verify your document page size and ensure it exactly matches your chosen KDP trim size. A 6″ \u00d7 9″ trim size requires a document set to exactly 6″ \u00d7 9″ \u2014 not 6.1″ \u00d7 9.1″ or any other approximation. If your book has bleed, your document should be set to trim size plus 0.25 inches (0.125 inch bleed on each side), and you should have selected the bleed option in KDP’s interface.<\/p>\n

\n

A Clean File Starts With Clean Text.<\/p>\n

Formatting rejections are technical and fixable. Text errors \u2014 typos, continuity mistakes, inconsistencies \u2014 are not caught by KDP’s file checker, and they reach readers. Vappingo’s manuscript proofreading catches what KDP’s system doesn’t, so the file that passes every technical check also contains text that meets readers’ quality expectations.<\/p>\n

Get a Quote \u2192<\/a><\/p>\n<\/div>\n

Cover File Rejection Reasons<\/h2>\n

“The spine width is incorrect.”<\/strong> Your cover PDF’s spine width doesn’t match what KDP calculates for your book’s page count and paper type. Spine width is calculated automatically by KDP based on the number of pages and whether the interior is black and white or colour \u2014 it’s not something you set manually. Fix: use KDP’s cover template generator to produce a template with the correct dimensions for your specific book. Download the template after entering your trim size, page count, and paper type, and use it as the basis for your cover design. If your page count changes during the publishing process, regenerate the template and update the spine width in your cover file before uploading.<\/p>\n

“Crop marks or registration marks are present.”<\/strong> Your cover PDF includes print production marks that KDP’s system doesn’t use and that interfere with its processing. Fix: re-export the cover PDF without crop marks. In InDesign, uncheck “Marks and Bleeds \u2192 Crop Marks” in the PDF export settings. In Canva and other design tools, export as a plain PDF without print marks selected.<\/p>\n

“Cover image resolution is too low.”<\/strong> The cover image doesn’t meet the 300 DPI minimum at print size. Fix: ensure your cover is designed at 300 DPI at the template dimensions from the start. Upscaling a low-resolution cover design to meet the dimension requirements does not increase its effective DPI \u2014 start with a high-resolution design file rather than attempting to fix a low-resolution one.<\/p>\n

Content Review Rejections<\/h2>\n

Content review rejections are different from technical rejections \u2014 the file uploads successfully but is held or rejected after Amazon’s review process. Common content rejection reasons include: public domain content submitted without sufficient original contribution; content that closely duplicates other books in KDP’s catalogue; misleading titles or descriptions that don’t accurately represent the content; content that violates KDP’s guidelines on sensitive topics or restricted content categories.<\/p>\n

If your book is held for content review, KDP emails you with the specific concern. Respond directly to the stated issue rather than simply resubmitting the same file. The KDP content guidelines guide<\/a> covers the compliance requirements in detail, and the KDP account suspension and appeals guide<\/a> covers what to do if the review results in a more serious account action. The KDP help documentation at kdp.amazon.com<\/a> lists the current content guidelines and restricted content categories that trigger review flags.<\/p>\n

Preventing Rejections Before They Happen<\/h2>\n

The most efficient approach to KDP file rejections is catching the issues before upload rather than diagnosing them from rejection emails after the fact. For print files, running your PDF through a preflight check before uploading \u2014 either using Adobe Acrobat’s Preflight function or a dedicated preflight tool \u2014 identifies the most common technical failures: unembedded fonts, low-resolution images, incorrect colour profiles, and missing bleed. For ebook files, Kindle Previewer renders your file exactly as it will appear on Kindle devices before you submit, catching visual rendering problems that the EPUB Validator doesn’t assess. Spending fifteen minutes on pre-upload validation is almost always faster than the turnaround time on a rejection-and-resubmit cycle, which typically adds one to three days to your publishing timeline.<\/p>\n

The KDP book production checklist<\/a> provides a complete pre-submission review process that addresses each of the rejection triggers covered in this guide. Working through the checklist before every upload \u2014 not just for the first book in a series but for every title \u2014 builds the habit that prevents the majority of rejection delays from occurring in the first place.<\/p>\n

One practical note on KDP’s rejection email communication: the detail in rejection messages varies considerably. Print rejections for technical issues \u2014 margins, resolution, font embedding \u2014 are usually specific and actionable. Content review hold emails are sometimes less specific, describing the category of concern without identifying the exact passage or element that triggered the flag. If you receive a vague content review notification and can’t identify the specific concern from the email, contacting KDP support directly and asking for clarification is both permitted and usually productive \u2014 support agents can often point you to the specific content element that triggered the review, making the fix faster than attempting to guess and resubmit blind.<\/p>\n

Authors who publish regularly \u2014 more than three or four books per year \u2014 benefit from building a personal pre-upload checklist that captures every rejection they’ve ever received and the fix that resolved it. Each rejection is an opportunity to add a step to the checklist that prevents that specific issue from recurring. After publishing ten or more books with this approach, most technical rejections become genuinely rare, because the accumulated checklist covers the full set of issues that your specific workflow and tools tend to produce. The KDP manuscript preparation guide<\/a> provides the starting point for this checklist across the standard pre-formatting workflow steps.<\/p>\n

\n
\n Stop guessing what sells on Amazon.
\n Find it. Write it. Sell it.<\/span>\n <\/div>\n
\n Real Amazon data + 15+ years of copy expertise\n <\/div>\n
\n
<\/div>\n <\/div>\n
\n
\n
Validate
Before You Write<\/div>\n
Reduce Risk<\/div>\n <\/div>\n
\n
Stop Losing
Money on Ads<\/div>\n
Fix Fast<\/div>\n <\/div>\n
\n
Turn Searches
Into Sales<\/div>\n
Convert More<\/div>\n <\/div>\n <\/div>\n \n Start Finding Profitable Books\n <\/a>\n
\n Powered by Vappingo\n <\/div>\n <\/div>\n \n
\n
\n Stop guessing what sells on Amazon.
\n Find it. Write it. Sell it.<\/span>\n <\/div>\n
\n Real Amazon data + 15+ years of copy expertise\n <\/div>\n
\n
<\/div>\n <\/div>\n
\n
\n
Validate
Before You Write<\/div>\n
Reduce Risk<\/div>\n <\/div>\n
\n
Stop Losing
Money on Ads<\/div>\n
Fix Fast<\/div>\n <\/div>\n
\n
Turn Searches
Into Sales<\/div>\n
Convert More<\/div>\n <\/div>\n <\/div>\n \n Start Finding Profitable Books\n <\/a>\n
\n Powered by Vappingo\n <\/div>\n <\/div>\n \n
\n
Related Reading<\/div>\n\n\n\n\n

\nSpecifications<\/span>
\nKDP Manuscript Formatting Requirements: The Complete Specification Guide<\/span>
\n<\/a><\/td>\n
\nTroubleshooting<\/span>
\nHow to Fix KDP Formatting Errors: The Complete Guide<\/span>
\n<\/a><\/td>\n<\/tr>\n

\nCompliance<\/span>
\nKDP Content Guidelines: What Amazon Will and Won’t Publish<\/span>
\n<\/a><\/td>\n
\nPrevention<\/span>
\nKDP Book Production Checklist: Every Step Before You Hit Publish<\/span>
\n<\/a><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/article>\n","protected":false},"excerpt":{"rendered":"

Book Production \u00b7 Vappingo KDP File Rejection Reasons: Every Common Error, What Causes It, and the Exact Fix KDP rejects manuscript and cover files for specific, fixable reasons. This guide covers every common rejection message \u2014 what it means, what causes it, and the exact steps to resolve it so your next upload goes through … Read more<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[10],"tags":[],"class_list":["post-12158","post","type-post","status-publish","format-standard","hentry","category-editing"],"_links":{"self":[{"href":"https:\/\/www.vappingo.com\/word-blog\/wp-json\/wp\/v2\/posts\/12158","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.vappingo.com\/word-blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.vappingo.com\/word-blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.vappingo.com\/word-blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.vappingo.com\/word-blog\/wp-json\/wp\/v2\/comments?post=12158"}],"version-history":[{"count":1,"href":"https:\/\/www.vappingo.com\/word-blog\/wp-json\/wp\/v2\/posts\/12158\/revisions"}],"predecessor-version":[{"id":12159,"href":"https:\/\/www.vappingo.com\/word-blog\/wp-json\/wp\/v2\/posts\/12158\/revisions\/12159"}],"wp:attachment":[{"href":"https:\/\/www.vappingo.com\/word-blog\/wp-json\/wp\/v2\/media?parent=12158"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.vappingo.com\/word-blog\/wp-json\/wp\/v2\/categories?post=12158"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.vappingo.com\/word-blog\/wp-json\/wp\/v2\/tags?post=12158"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}