Upload once — without the bleed rejection
Bleed or no bleed — detected
The checker reads every page size and tells you which KDP trim it fits and whether to choose Bleed or No bleed.
Catches the classic rejection
A bleed-sized PDF uploaded with “No bleed” (or the reverse) is one of the most common reasons KDP sends an interior back.
Mixed and rotated pages
Lists every page that is a different size or rotated — a stray landscape page or an inserted image page shows up at once.
Page count rules
KDP’s page range for your trim and paper, odd page counts, spine text from 80 pages and the gutter your page count needs.
Private by design
Your PDF is opened in your browser and never uploaded — fine for unpublished manuscripts.
All KDP trim sizes
Works for all 16 standard paperback trims, and flags custom sizes and sizes KDP does not print.
How to check a KDP interior PDF
- 1Export your interior as a PDF from Word, Affinity, InDesign, Canva or your puzzle book tool.
- 2Drop the PDF into the checker — it is read in your browser.
- 3Pick the bleed setting you plan to choose in KDP (or let the checker tell you) and your paper.
- 4Fix any page-size problem it lists, then upload to KDP and check the previewer.
KDP formatting guides
Amazon KDP Bleed vs No Bleed (2026): Complete Guide for Puzzle & Activity Books
Amazon KDP bleed vs no bleed for puzzle and activity books: exact page sizes for every trim size, the bleed formula, margin rules and how to avoid rejections.
Amazon KDP Safe Margins & Gutter Guide (2026): Exact Dimensions to Avoid Rejections
Amazon KDP print margins for puzzle books: the inside gutter by page count, outside margins and bleed vs no bleed for 6x9, 8.5x11 and other trim sizes.
Large Print Puzzle Books for Seniors: What Really Makes a Page Readable
Large print puzzle books for seniors on KDP: measured font and cell sizes, puzzles and answers per page, trim size, margins and a checklist before upload.
KDP bleed FAQ
How do I know if my PDF has bleed?
Compare the page size with your trim size. A PDF with bleed is 0.125″ wider and 0.25″ taller than the trim — 8.625 × 11.25″ for an 8.5 × 11″ book. A PDF at exactly the trim size has no bleed. The checker does this for every page.
Why did KDP reject my interior for bleed?
Usually the PDF size does not match the bleed setting: a bleed-sized PDF with “No bleed” selected, a trim-sized PDF with “Bleed” selected, or a few pages with a different size. Choose the setting that matches the PDF, or export it again at the right size.
Should my puzzle book use bleed?
Only if something prints to the edge of the page. Puzzle grids, text and answer keys stay inside the margins, so most puzzle books use No bleed with a PDF at exactly the trim size.
Is my PDF uploaded anywhere?
No. The checker opens the file in your browser with JavaScript and reads only the page sizes; nothing is sent to our server.
Does it check margins and images?
No — it checks the page size, page count and rotation, which cause most bleed rejections. Text inside the margins and images that reach the edge are checked by KDP’s previewer after upload.
What if my PDF is password-protected?
KDP does not accept protected or encrypted PDFs. Export the file again without a password; the checker tells you when it cannot open a file for this reason.
More free tools
Free Sudoku Generator
Printable 4×4, 6×6 and 9×9 sudoku in Easy, Medium or Hard, with an answer key.
Free Maze Generator
Classic mazes and mazes for kids, freshly generated for every PDF, with solutions.
Free Word Scramble Generator
Word scramble worksheets from five themes or your own spelling words, with answers.
Free Missing Vowels Generator
Fill-in-the-vowels worksheets from five themes or your own spelling words, each word with one right answer.
Free Number Search Generator
Digit grids where the leftover digits spell a hidden message — a built-in one, your own or none — with answers.
Free Classic Number Search Generator
Digit grids with a list of numbers to find — no code, no message — for kids and adults, with answers.
Free Missing Vowel Word Search Generator
Word searches whose word list has the vowels taken out — restore each word, then find it — from five themes or your own words.
Free Hidden Message Word Search Generator
Word searches whose leftover letters spell a secret phrase — a surprise message or your own, in nine languages.
Free Anagram Puzzle Generator
Anagram worksheets that turn a real word into another (EARTH → HEART), from everyday words or your own pairs.
Free Crossword Puzzle Generator
Freeform crosswords with hand-written clues or your own words and clues, or a fill-in word list.
Free Mine Finder Puzzle Generator
Logic puzzles where the numbers reveal the hidden mines, every one solvable without guessing.
Free Nonogram Puzzle Generator
Picture logic puzzles: the numbers tell which squares to fill and a hidden picture appears, one solution each.
Free Color Nonogram Generator
Nonograms in color: colored clue numbers reveal pictures in up to four colors, one solution each, also for kids.
Free Zebra Nonogram Generator
Nonograms with striped clues: shaded strips count the filled squares, white strips the empty ones, one solution each.
Free Triangle Nonogram Generator
Nonograms with half squares: numbers and triangles reveal pictures with smooth diagonal edges, one solution each.
Free Codeword Puzzle Generator
Crossword grids where every letter is a number: crack the code from a few given letters, one answer each.
Free Fill-In Puzzle Generator
Kriss-kross grids without clues: fit the words, sorted by length, where they cross — one solution each.
Free Cryptogram Generator
Cryptograms from your own quotes or themed word lists, each checked to have exactly one solution.
Free Wordoku Generator
Letter sudoku where one row spells a hidden word — 9×9 or small grids for kids, with your own words and answers.
Free Word Search Generator
Word search puzzles from five themes or your own word list, for kids and adults, with answers.
Free Duplicate Word Remover
Remove duplicate words from any list, strip accents and see how often each word repeated.
Free Word Counter
Count words, characters, sentences and chapters and estimate your book’s page count for KDP.
Free QR Code Generator
Make QR codes for links, text and images — with your colors, logo and a caption, one by one or in bulk.
Free KDP Royalty Calculator
See your royalty per copy on Amazon KDP — printing cost, the 60 % price point, Expanded Distribution and Kindle 35 % vs 70 %.
Free KDP Profit Calculator
Your real KDP profit: royalties minus ads, software and one-time costs — with break-even and the ACoS your ads can afford.
Free KDP Spine Width Calculator
Exact spine width and full cover size with bleed for any KDP paperback — plus a cover template to download.
Free KDP Cover Size Calculator
Cover dimensions for every KDP format — paperback with bleed, hardcover with wrap and hinge, and Kindle eBook.
Free KDP Cover Creator
Design your KDP paperback cover online — spine and bleed sized from your page count, PDF at 300 DPI, free forever, no watermark.
Free KDP Page Count Calculator
How many pages your KDP paperback will have — from word count, font and margins, or from puzzles per page and the answer key.
Free KDP Trim Size Calculator
Interior page size for every KDP trim, with or without bleed — minimum margins, live area and a page template.
Skip the export headaches — build the whole book
Wisdom Effect builds whole Sudoku, Word Search, Maze, Word Scramble, Missing Vowels, Fill-In, Classic Number Search, Missing Vowel Word Search, Crossword, Codewords, Cryptogram, Anagram, Mine Finder, Hidden Message Word Search, Number Search, Wordoku, Nonogram, Color Nonogram, Zebra Nonogram and Triangle Nonogram books and exports the interior at the exact KDP trim size with safe margins and the right gutter — free trial with 100 credits, no credit card.