Draftproof reads the form you already filled in — title, subtitle, series, keywords, categories, ISBN, low-content selection — and shows which entries break a published KDP rule. Each finding links to Amazon's own wording, and tells you how to fix it.
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kdp.amazon.com.Twenty-four checks across the three KDP steps, each tied to a named Amazon help page. Nine of them are things Amazon states plainly enough that we show them in red — for example a title that advertises instead of naming the book, a series name with the volume number baked into it, quotation marks or HTML in a keyword line, the same ISBN on two formats, or a title and subtitle that together run past 200 characters.
The rest are prompts: the limits Amazon never published as a number, the consistency between your interior title page and the metadata you typed, the AI-generated declaration, the low-content selection, rights paperwork, and weekly publishing limits. Those we ask you to confirm, because a tool that guesses at your submission is worse than no tool.
Blocking is not the same as rejection. A rejection, or a book that falls back to Draft, means a specific field or file failed review and you can fix it and resubmit. Blocked means Amazon has decided the book violates its content guidelines — and while it is blocked you can neither publish it, edit it, nor delete it from your Bookshelf. The only way out is the appeal route described in the notification email.
Books get blocked over four broad things: content that violates the content guidelines, copyright or public-domain problems, metadata Amazon reads as misleading, and duplicate or low-quality content. Read the sentence in Amazon's email that names the violated guideline; it defines the whole scope of your fix.
The series information in your KDP metadata and the series information printed in the book itself do not agree word for word. Amazon lists title / series name / edition / volume / contributor inconsistency between the file and the submitted metadata as a standard defect.
Two common causes: the Series Name field contains a number ("Garden Journal Book 3") when Amazon wants only the name, with ordering in its own field; or your interior title page says "Volume Two" while the form says "Book 2". Fix whichever side is wrong so they read identically, then resubmit.
Source: Amazon KDP — Content Quality (G200952510), Metadata Guidelines (G201097560)
Up to seven keywords or short phrases — that number is on the page. The per-line character limit is not: Amazon says only "Keep an eye on the character limit in the text field." No figure is published, so treat your own live counter as the authority. The "50 characters" you will read in blog posts is an observation, not documentation.
Wasting lines matters more than the limit. The page's avoid-list includes spacing/punctuation variants of the same term (translations being the stated exception), words already covered elsewhere, words already in your categories, subjective claims, common information, and spelling errors.
No. Amazon states a zero-tolerance policy for metadata meant to advertise, promote, or mislead. In the title and subtitle that includes promotional claims — and the low-content trap of stuffing generic words like "notebook", "journal", "gifts", "for women" into the title field to catch browse traffic. The Title field must contain only the actual title as printed on your cover.
The keyword avoid-list is specific: subjective claims, time-sensitive statements, misrepresentative names, unauthorized brands, quotation marks, program names, HTML tags. Note what is not on that list — Amazon does not name prices or competing book titles there, so anyone telling you those are codified violations is going beyond the page.
Source: Metadata Guidelines (G201097560), Keywords (G201298500)
Up to three business days for a standard book, and 3–4 weeks for low-content titles — not days, which is the figure many sellers plan around and get wrong. "Pending" is not "Rejected". What sends a book back to Draft is a defect found during review, and it clusters in a small set of places: title and subtitle wording, keyword misuse, series or edition mismatch with the interior file, ISBN problems, and the low-content selection.
Source: Book Status (G200627450), Low-Content (GGE5T76TWKA85DJM)
Yes. Amazon's page is explicit: "Each format of your book (paperback vs hardcover) needs its own ISBN", and the same ISBN cannot be reused across formats or across new editions with significant changes. A free KDP ISBN sets your imprint to "Independently published", and free KDP ISBNs are unavailable for low-content books.
The rejection people do not expect is not a typo — it is registration mismatch. If the ISBN you entered is registered to a different title, author or imprint than the metadata you submitted, it fails even though the number itself is valid.
Source: ISBN (G201834170)
Yes, and the distinction people miss is generated versus assisted. Amazon requires you to inform them of AI-generated text, images or translations when you publish a new book or make edits to and republish an existing one. AI-assisted content — you wrote it, a tool helped refine it — is not required to be disclosed. The declaration sits in the publishing flow, not in a metadata field, which is why it gets skipped on resubmissions.
Source: Content Guidelines (G200672390)
Self-publishing income arrives per title and irregularly. A tool billing every month while you have nothing in production is a cost you resent — and resentment is why KDP subscriptions get churned out for something cheaper. $29 once, covering a year of rule updates. Amazon's metadata rules do not change weekly, so a yearly window fits the actual maintenance cadence rather than a billing habit. After that year, updates stop unless you renew; the extension keeps working on the last ruleset it gave you.