You hit publish. Or you tried to. And instead of that satisfying “your book is live” moment, you got an email from Amazon KDP telling you something’s wrong with your file. No specifics you can actually use, just a vague error and a link to a help page that somehow makes things more confusing.<\/p>\n
If this has happened to you, you’re in good company. KDP rejections are incredibly common, and almost none of them have anything to do with your writing. They’re formatting issues, small technical things that are easy to miss and, once you know what to look for, pretty easy to fix. A lot of these mistakes are exactly why so many authors eventually turn to professional book formatting<\/a> instead of muscling through it alone. Let’s go through the ones that trip people up most often.<\/p>\n This is probably the single biggest cause of rejection, and it’s sneaky because it often looks fine on your screen. You pick a trim size, say 6×9, but somewhere in your file the actual page dimensions don’t match what you selected in KDP’s setup. Maybe you copied a template built for 5.5×8.5 and never updated the page size. Maybe your PDF export defaulted back to letter size without you noticing.<\/p>\n KDP checks this automatically, and if there’s a mismatch, even a small one, your file gets bounced back. Before uploading, open your PDF and check the actual page dimensions match the trim size you selected during setup. Don’t just trust that your word processor did it right. Measure it, or at least check the document properties. This is exactly the kind of detail that good amazon KDP book formatting catches before it ever becomes a problem.<\/p>\n Margins aren’t just a style choice, they’re functional, and KDP has minimum requirements that scale with your book’s page count. A 120 page book and a 400 page book need different gutter margins, because thicker books curve more at the spine once bound.<\/p>\n A lot of rejected files simply used the same margin settings the author saw work fine for a friend’s shorter book. If your page count changed after you finished formatting (and it almost always does, after edits), go back and recheck your margins against KDP’s current specifications for your specific page count. This is one of those details that’s boring to double check and expensive to skip, and it’s a big reason solid book formatting and layout<\/a> work matters so much more than people expect going in.<\/p>\n If your book has any images, colors, or design elements that touch the edge of the page, and you didn’t set up bleed, KDP will likely flag it. Bleed is the extra 0.125 inches of image that extends past the trim line, which accounts for the natural imprecision of cutting printed pages.<\/p>\n The mistake usually isn’t forgetting bleed entirely, it’s applying it inconsistently. Maybe your cover has proper bleed but a few interior images don’t. Or your bleed measurements are slightly off because you built your file in a program using a different default unit of measurement. Go through every page that touches the edge and check bleed consistently, not just once at the start of your project.<\/p>\n This one’s invisible until it isn’t. If your fonts aren’t embedded in your PDF, the file might display beautifully on your computer, since your computer already has that font installed, but look completely different (or throw an error) on someone else’s system, including KDP’s processing servers.<\/p>\n When you export your final PDF, make sure “embed fonts” or “embed all fonts” is checked. This single setting causes more silent rejections and post-publication formatting disasters than almost anything else on this list, and it takes about ten seconds to fix.<\/p>\n A photo that looks crisp on your screen at 72 or 96 DPI will often print blurry, pixelated, or noticeably soft. KDP generally wants images at 300 DPI for anything going to print, and if your images fall well under that, you’ll either get flagged during upload or, worse, approved and then printed poorly without warning.<\/p>\n Before you finalize your file, check the actual resolution of every image you’re using, especially your cover and any full page graphics. Resizing a low resolution image bigger in your layout software doesn’t fix this, it just makes the problem more obvious. This is one of the areas where custom book formatting<\/a> really earns its cost, since someone experienced will catch a resolution problem before it ever reaches upload.<\/p>\n Your cover and interior are two separate files with two separate sets of rules, and it’s easy to format one correctly while forgetting the other needs the same attention. Spine width, for instance, is calculated based on your exact page count and paper type, and if your page count changes after you build your cover, your spine width is now wrong, even if it was right the first time.<\/p>\n KDP provides a cover calculator for exactly this reason. Run your numbers again anytime your final page count changes, even by a page or two, and rebuild your cover template if needed rather than assuming the old one still fits. Good book formatting and design<\/a> work treats the cover and interior as one connected project, not two separate afterthoughts.<\/p>\n For ebook formatting specifically, a table of contents with broken or missing navigation links is a common cause of quality warnings, even if it doesn’t always trigger outright rejection. Readers expect to tap a chapter title and land there instantly, and if that doesn’t work, it reflects badly on an otherwise polished book.<\/p>\n Test every single link in your table of contents before uploading, not just a sample of a few. It’s tedious, but it takes far less time than dealing with reader complaints or a resubmission after the fact. This is exactly the kind of detail that dedicated ebook formatting services<\/a> are built to catch, since digital navigation problems are easy to overlook when you’re focused on the print file.<\/p>\n If you wrote your manuscript in one program and converted it to another before finalizing (Word to Google Docs to PDF, for example, or vice versa), hidden formatting inconsistencies tend to sneak in. Different line spacing on different pages. A random font change nobody notices until page 140. Page breaks that shifted during conversion and now land in odd places.<\/p>\n Read through your final file page by page, or at minimum skim every chapter transition, rather than assuming a clean export means a clean result. Conversions are rarely as tidy as they look at first glance, which is exactly why so many authors eventually look into manuscript formatting services rather than catching every inconsistency themselves.<\/p>\n KDP gives you a preview tool before your file goes live, and skipping it is one of the most avoidable mistakes an author can make. It’s not perfectly identical to a printed proof, but it catches an enormous number of issues before they become a rejection or, worse, a published error.<\/p>\n Always run your file through the preview, page by page if you have the patience, and don’t treat it as a formality. It’s the closest thing you have to a final check before your book is actually out in the world.<\/p>\n Almost every mistake on this list comes from the same root cause: rushing the final stretch after spending months or years on the actual writing. It’s understandable. You’re excited, you want it live, and formatting feels like the boring last step standing between you and a finished book.<\/p>\n But this is exactly where a little patience pays off, or where bringing in help makes sense. Double check your trim size, your margins, your bleed, your fonts, your images, your cover specs, your table of contents, and actually use the preview tool before you hit submit. None of these fixes take long individually. Skipping them, though, can cost you days of back and forth with KDP support, or worse, a printed book with a mistake you can’t take back.<\/p>\n If you’d rather not carry all of this yourself, working with real book formatting services can save you the guesswork entirely. Whether you need paperback book formatting services for a print run, professional ebook formatting for Kindle<\/a> and other digital platforms, or a full book formatting for self-publishing package that covers both at once, handing the technical side to someone who does this daily is often worth every penny, especially on your first book.<\/p>\n Your writing got you this far. Don’t let a formatting oversight be the thing that holds your book back from actually reaching readers.<\/p>\n\n Your Trim Size and Interior Don’t Actually Match<\/h2>\n
Margins Too Tight for Your Page Count<\/h3>\n
Missing or Incorrect Bleed Settings<\/h3>\n
Fonts That Aren’t Embedded<\/h3>\n
Low Resolution Images<\/h3>\n
Cover File Doesn’t Match Interior Specs<\/h3>\n
Table of Contents Links That Don’t Work<\/h3>\n
Inconsistent Formatting From Converted Files<\/h3>\n
Ignoring the Preview Tool Before Submitting<\/h3>\n
The Real Fix Is Slowing Down at the End (Or Getting Help)<\/h2>\n