Glossary
KDP coloring book glossary
Plain-English definitions of the Amazon KDP terms every coloring book publisher needs to know. 20 terms across 5 categories. Each definition includes a 40-second answer plus a deeper walkthrough.
Research and data
Niche, sales, and competition signals that drive what to publish.
BSR(Best Sellers Rank)
BSR (Best Sellers Rank) is Amazon's hourly-updated rank of every product against all others in its top-level store. For KDP coloring books, BSR sits in the Books store and approximates how recently a book sold. Lower number means more recent sales. BSR of 100,000 in Books equals roughly 2 to 3 sales per day.
Evergreen niche
An evergreen niche on KDP is a coloring book niche whose demand survives at least 24 months without a trend-cycle collapse. The four structural anchors of evergreen demand are recurring life events, identity communities, replenishing demographics, and permanent human needs. Mandalas, animals, and Christmas are textbook evergreen.
Low-content book
A low-content book is a KDP-published book whose interior is mostly empty or templated, such as journals, planners, logs, and coloring books. Pages are not blank but carry minimal author-written content. KDP allows low-content books with a separate dashboard since 2018.
No-content book
A no-content book is a KDP book whose interior is fully blank or strictly repeating, such as blank journals, lined notebooks, or grid books. The distinction from low-content is that the interior has zero author-designed content variation. No-content books face stricter saturation and review thresholds than coloring books.
Format and specs
Physical book requirements: trim, bleed, gutter, DPI, manuscript prep.
Bleed
Bleed is the 0.125 inch (3.2 mm) extension of artwork past the trim line of a KDP paperback page. It exists so that small variations in the cutting machine do not produce a thin white sliver at the page edge. Coloring books with full-page line art must include bleed or risk KDP rejection.
DPI(Dots Per Inch)
DPI (dots per inch) is the print-resolution measure of a coloring book page. KDP requires a minimum 300 DPI on every interior image at the page's printed size. A 300 DPI 8.5 x 11 inch page is 2550 x 3300 pixels. Files below 300 DPI print fuzzy and trigger a quality warning at upload.
Gutter
The gutter is the inside margin near the spine where two facing pages meet. KDP requires a minimum gutter margin that scales with page count: 0.375 inch for 24 to 150 pages, 0.5 inch for 151 to 400 pages, and 0.625 inch for 401+ pages. Putting critical art in the gutter leaves it hidden in the spine.
Manuscript
The manuscript is the interior PDF file uploaded to KDP, distinct from the cover file. For coloring books, the manuscript contains all the line-art pages, any front matter (title page, copyright), and any back matter (about the artist, also-by). KDP requires a print-ready PDF at 300 DPI with embedded fonts and bleed.
Spine
The spine is the bound edge of a paperback, including the visible spine strip on the cover. Spine width is calculated from page count: KDP's formula is page count x 0.002252 inch for white interior paper, x 0.0025 inch for cream. A 100-page coloring book has a 0.2252 inch spine on white paper.
Trim size
Trim size is the final physical dimensions of a KDP paperback after cutting, measured in inches (US) and rounded to 0.001 inch. The most common KDP coloring book trim sizes are 8.5 x 11 inches (standard letter), 8 x 10 inches (compact), and 8.5 x 8.5 inches (square). Trim size is set at title creation and cannot change later.
Listing and metadata
The Amazon listing surface: keywords, categories, A+ Content.
A+ Content
A+ Content is a visual-rich block of modules a KDP publisher can add to the product detail page, between the standard description and the customer reviews. For coloring books, A+ Content typically shows sample interior pages, the artist credential, and a "what is inside" overview. It is free, optional, and lifts conversion noticeably.
Browse path
A browse path is the chain of nested categories a book sits inside on Amazon's storefront, like Books > Crafts, Hobbies & Home > Crafts & Hobbies > Coloring Books for Grown-Ups. KDP titles can be in up to 3 browse paths. The right paths drive both default sort placement and the BSR-by-category badges the book competes for.
KDP keyword
KDP gives every published title 7 keyword slots, each up to 50 characters, used by Amazon search to match queries to books. For coloring books, the slots should hold long-tail buyer queries ("coloring book for adults stress relief animals") not single words. Title, subtitle, and category placement also feed search but the 7 slots are the dedicated backend lever.
Pricing and royalties
Royalty math, distribution choices, and the levers that move profit.
ACoS(Advertising Cost of Sales)
ACoS (Advertising Cost of Sales) is the Amazon Ads metric showing ad spend divided by ad-attributed sales revenue, expressed as a percentage. An ACoS of 30% means the publisher spent $30 in ads for every $100 of ad-attributed sales. For KDP coloring books, break-even ACoS is typically 35 to 45%, depending on price and print cost.
Expanded distribution
Expanded distribution is an opt-in KDP setting that pushes a paperback into bookstores, libraries, and online retailers beyond Amazon (Barnes & Noble, Ingram-served chains). Royalty drops from 60% to 40% on expanded sales, and the publisher must list the book at a high enough price to clear print cost at the lower royalty.
KDP Select
KDP Select is an opt-in 90-day exclusivity program for Kindle eBook titles. Enrolled eBooks join Kindle Unlimited, earn page-read royalties, and get access to Kindle Countdown Deals and Free Promotions. Low-content books and coloring books are not eligible for KDP Select; only Kindle eBook editions of regular paperbacks qualify.
Royalty cliff
The royalty cliff is the discrete drop in royalty rate when a KDP paperback is priced outside the $2.99 to $9.99 standard distribution band. At $9.99 a standard-distribution paperback earns 60% royalty minus print cost. At $10.00+ the rate stays 60% on standard but the publisher loses access to certain promo tools and faces buyer resistance.
Production
The "make and ship" mechanics: print-on-demand, proof copies, interior layout.
Interior
The interior is the full set of inside pages of a KDP paperback, distinct from the cover. KDP interior options for coloring books include white or cream paper, black-and-white or color printing, and standard or premium paper weight. Coloring book interiors almost always use white paper with black-and-white printing.
Print-on-Demand
Print-on-Demand (POD) is a fulfillment model where a book is manufactured one copy at a time when a customer orders it. KDP is the largest POD operator in publishing. POD removes inventory risk and upfront print runs: the publisher uploads files once, and Amazon prints and ships each sale on demand for a per-unit print cost.
Proof copy
A proof copy is a physical printed sample of a KDP book ordered before the title is set to "live". Proofs cost only print + shipping (no royalty markup), arrive in 3 to 7 days, and let the publisher inspect bleed, gutter, line-art crispness, and spine alignment in print before any customer sees the book.
Next steps
Once the vocabulary clicks, the next thing most KDP coloring book publishers want is real data on what sells.