Common KDP Rejection Reasons and How to Avoid Them

Amazon KDP reviews every file uploaded to its platform before making a book available for purchase. Most rejections fall into two categories: technical formatting issues with the interior or cover files, and content or policy violations in the metadata or manuscript. Both are preventable with the right preparation.

This guide covers the most common rejection reasons with specific causes and fixes for each, organized by file type and issue category.

Interior file rejections

Interior file rejections are the most common type and are almost entirely preventable with proper formatting tools and a pre-upload check.

Incorrect page dimensions

What KDP reports: your interior PDF doesn't match your selected trim size.

How it happens: the most common cause is exporting the PDF at a different page size than your chosen trim dimension. For example, exporting at US Letter size (8.5 × 11 inches) when your chosen trim size is 6 × 9 inches. This also happens when margins are calculated incorrectly, resulting in a page that technically matches the trim dimensions but has content bleeding outside the printable area.

How to fix it: confirm your export settings specify the exact trim size in inches before generating the PDF. If you're using a dedicated formatting tool like LiberScript, the export is automatically set to your chosen trim size and should not produce this error. If exporting from Word or another general-purpose tool, double-check that the page setup (not just the margins) is set to the correct dimensions.

Fonts not embedded

What KDP reports: one or more fonts are not embedded in the PDF.

How it happens: the PDF was exported without the "embed fonts" option enabled, or the fonts used are system fonts that the export tool wasn't able to embed (common with some versions of Word on certain operating systems).

How to fix it: re-export the PDF with font embedding enabled. In most design software, this is a standard PDF export option; in Word, choose "Save as PDF" and confirm that the options include "embed all fonts." Verify embedding by opening the PDF in Adobe Acrobat (if available) or a free PDF viewer that shows font properties.

Text or images outside the safe zone

What KDP reports: content is too close to the trim edge and may be cut off during printing.

How it happens: text or images within 0.25 inches of the outer edges of the page, or not accounting for the correct gutter (inside margin) based on page count.

How to fix it: increase your outer margin and verify your gutter meets KDP's minimum for your page count. See our KDP formatting checklist for the exact gutter minimums by page range.

Page count below minimum or above maximum

What KDP reports: your interior has fewer than 24 pages or more than 828 pages (for most trim sizes).

How it happens: very short manuscripts, or very long ones, can exceed KDP's page count limits for print. Ebook files don't have this restriction.

How to fix it: for short books (under 24 pages), increase font size, add a dedication, or add padding to reach the minimum. For very long books, consider splitting into multiple volumes. For trim sizes with stricter limits, check KDP's current limit for your specific size.

PDF transparency not flattened

What KDP reports: the PDF contains transparency that may not print correctly.

How it happens: design elements with transparency (drop shadows, opacity settings, certain image effects) can cause issues when printed unless the PDF's transparency is flattened during export.

How to fix it: export with "flatten transparency" enabled, or convert the file to PDF/X-1a format, which flattens transparency as part of the standard. Most professional PDF export options include a transparency flattening setting.

Cover file rejections

Cover rejections are often related to dimension mismatches, which happen when the cover was designed before the interior was finalized.

Cover dimensions don't match interior

What KDP reports: the cover dimensions don't match the submitted interior's trim size and page count.

How it happens: the most common cause is designing the cover before knowing the final page count, then uploading a cover with a spine width based on an estimated page count that doesn't match the actual uploaded interior.

How to fix it: always finalize the interior before designing the print cover. Use KDP's cover template generator (available in the cover upload section of your book setup) with your actual, final page count to get the exact required cover dimensions. See our KDP cover specifications guide for the spine width calculation.

Incorrect color mode (RGB instead of CMYK)

What KDP reports: the cover file is in RGB color mode and may not print correctly.

How it happens: the cover was designed in RGB (the color mode for screens) rather than CMYK (the color mode for print). Many design tools default to RGB; the conversion must be done explicitly before exporting the print cover PDF.

How to fix it: convert your cover file to CMYK color mode in your design software before exporting. Note that CMYK colors look slightly different from their RGB equivalents, and some vibrant RGB colors can't be reproduced exactly in CMYK. If you hire a cover designer, specify that you need a CMYK-mode PDF for the print cover.

Cover resolution too low

What KDP reports: the cover file is below 300 DPI and may appear pixelated or blurry in print.

How it happens: the cover was designed at a low resolution, or images placed in the cover were low-resolution stock photos or screen-captured images.

How to fix it: redesign or export at 300 DPI minimum. For print covers, 400 DPI is recommended. If the cover uses raster images (photos), ensure those source images are themselves at sufficient resolution for print (a 72 DPI web image can't be upscaled to print quality; you need the original high-resolution file).

Barcode area blocked

What KDP reports: the cover has design content over the barcode placement area.

How it happens: the design extends into the lower-right area of the back cover where KDP places its barcode.

How to fix it: leave an approximately 2 × 1.2 inch white area in the lower-right corner of the back cover. KDP's cover templates mark the barcode area; if you're not using a template, add a white box as a placeholder.

Metadata and content policy rejections

These rejections are about your book's title, description, and content rather than the file itself.

Title inconsistency

What KDP reports: the title on the cover or interior title page doesn't match the title entered in the book's setup metadata.

How it happens: the title was edited during setup without updating the interior file, or the subtitle is in the wrong field.

How to fix it: ensure the title on your cover and interior title page matches exactly what you entered in KDP's setup fields. Subtitle, if any, goes in the subtitle field, not added to the title field.

Description policy violations

What KDP reports: the book description contains content that violates KDP's guidelines.

Common causes: including other authors' names or book titles in the description in a way that implies endorsement or comparison (for example, "If you liked [Famous Author], you'll love this book" is typically prohibited), excessive capitalization, claims about bestseller status that can't be verified, or promotional language that violates KDP's content guidelines.

How to fix it: remove or rephrase the offending content and resubmit.

Copyright concerns

What KDP reports: the book appears to contain content that may not be original or may infringe on third-party copyrights.

How it happens: publishing very short works (a few pages), books that closely match other published books in title and content, or books that appear to be reformatted public domain content without sufficient original contribution can trigger copyright review flags.

How to fix it: ensure your book contains substantial original content. For public domain works, add a meaningful original introduction, scholarly notes, or other original material to justify the new edition.

Prohibited content

What KDP reports: the book contains content that violates KDP's content guidelines.

Common causes: KDP's content guidelines prohibit several categories of content, including certain types of explicit content, content involving minors, real people in certain contexts, and content that incites illegal activity. Full details are in KDP's Content Guidelines, which are worth reading before submission.

Pre-submission checklist to avoid rejections

Check	What to verify
Page dimensions	Interior PDF page size exactly matches chosen trim size
Fonts embedded	PDF export was done with "embed all fonts" enabled
Margins	Gutter meets minimum for page count; outer edges have 0.25-inch minimum
Page count	Interior is between 24 and 828 pages for most trim sizes
Cover dimensions	Full-wrap cover file dimensions were calculated from final page count via KDP's template
Cover color mode	Print cover PDF is in CMYK (not RGB)
Cover resolution	Cover file is 300 DPI minimum
Barcode area	Back cover has a clear white area in the lower-right corner
Title match	Title and subtitle on cover and title page exactly match metadata fields
Content review	Description doesn't include prohibited comparative references or violate content guidelines

When your book goes live but something is still wrong

Rejection is better than the alternative: a book that passes review but has undetected issues. Some issues escape KDP's automated checks and only surface after publication, either through reader complaints, your own order of an author copy, or your own review of the live Kindle product.

Common post-publication issues and how to address them:

Formatting looks different in the live book than in preview: KDP's online previewer renders an approximation of the final output. The actual Kindle rendering, particularly for complex files, can differ slightly. If the live ebook has unexpected formatting problems, download your own book from your Kindle account to see exactly what readers see, then fix and re-upload the interior file.

Print author copy reveals a problem: if you're ordering an author copy before approving for broader sale (which is strongly recommended), the author copy reflects the actual print output. Cover colors, interior margins, and font rendering may look different in print than they did in a PDF viewer. Note any issues, update the files, and order a second proof before approving.

A chapter or section is missing: usually a heading style issue where the formatting tool didn't detect a chapter boundary. Open the source file in your formatting tool, verify heading assignments, and re-export.

Images appear too dark or too light in print: black-and-white printing affects images based on their grayscale values. Images that look fine in color may appear muddy or washed out in B&W print. Convert images to grayscale at the editing stage and adjust levels before embedding.

What happens when KDP flags content (not just files)

KDP's content review isn't just about file quality. Submissions can be held for manual review of the content itself, which is different from an automated file rejection.

Content hold vs. rejection: a content hold means KDP is reviewing whether the book meets its content guidelines but hasn't rejected it yet. These holds can sometimes last several days. You typically receive an email notification.

Title and content mismatch: if your title suggests a professional or self-help category but the content doesn't match (a common scenario with keyword-stuffed titles), KDP may flag the book for review or rejection.

Third-party content and permissions: if your book contains song lyrics, long quotations from other published works, or other third-party content, you may be asked to provide permission documentation. This applies to published-under-copyright content; public domain material doesn't require permission, though it may require a note indicating the public domain source.

KDP's content guidelines document: the policies are specific and updated periodically. Before writing a book in any category that touches adult content, real people, AI-generated content, or politically sensitive topics, reviewing KDP's content guidelines directly on the KDP Help Center is worthwhile to ensure compliance.

What KDP's automated review catches vs. misses

KDP's automated review system catches file-level issues reliably: dimension mismatches, unembedded fonts, resolution failures, color mode errors, and barcode placement violations are all detected automatically.

The system is less reliable at catching:

• Subtle margin violations: if text gets close to but doesn't technically cross the minimum margin, it may pass review but look bad in print
• Font rendering issues: an embedded font that's technically compliant but renders poorly on e-ink displays won't be caught by file review
• Table formatting in ebooks: tables that look acceptable in KDP's previewer may be unusable on small-screen Kindle devices
• Low-quality image upscaling: if a low-resolution image was upscaled to meet the DPI requirement, it may pass review but print with visible pixelation

The pre-submission checklist in this guide catches what automated review catches. Testing on actual devices catches what automated review misses.

Frequently asked questions

How long does KDP take to review files after upload?

Technical review of interior and cover files typically takes a few hours. Content review, particularly for new books or accounts with no publishing history, can take up to 72 hours or occasionally longer.

Will KDP email me when my submission is rejected?

Yes. KDP sends an email notification when a submission is rejected, with a description of the issue. The email usually provides enough information to identify the problem; the rejection notice in your KDP dashboard may include more specific details.

Can I resubmit immediately after fixing a rejection?

Yes. Once you've fixed the identified issue, you can upload a corrected file immediately. If there were multiple issues, KDP's automated review may catch them sequentially; in some cases a second submission reveals a different issue from the first rejection.

Is there a limit on how many times I can resubmit?

KDP doesn't impose a hard limit on resubmissions, but an account that repeatedly submits content that violates policy may be flagged for closer review.

The bottom line

Most KDP rejections are technical formatting issues that a pre-upload checklist prevents. The common ones: incorrect page dimensions, unembedded fonts, cover spine width mismatch, and RGB instead of CMYK cover mode, all have straightforward fixes. Working through our KDP formatting checklist before uploading catches the majority of technical issues before they become rejection notices.

For the full publishing process from manuscript to live book, see our guide on how to self-publish on Amazon KDP.