Help centre

A short guide for every part of the studio: what it does, what you need and what you get.

Accounts, billing and platform

• AccountsYour profile, your team and two-factor sign-in.
• BillingYour plan, Book Passes and Studio credit, and every payment with its receipt.
• Key vaultYour AI keys, checked when you add them, stored encrypted and never shown again.
• Spending caps and kill switchA monthly AI cap you control, and jobs that stop at their quoted price.
• Usage meterYour Studio credit, and what AI jobs have cost you this month, next to your cap.

Book projects and editions

• Book workspaceOne place for your book, with an edition for each language and the formats of each edition.
• Change propagationFix your original once: the translations pick up exactly the lines that changed.
• Edition dashboardEvery edition's state at a glance: manuscript, builds, covers, ISBNs, KDP kit and what's live.
• Pen names, imprints and seriesPublish under pen names and your own imprint, see each series whole, and make box sets.

Cover studio

• Back-cover copy per languageThe tagline, blurb and closing line for each edition's back cover.
• BarcodeThe ISBN barcode in KDP's box, drawn from the ISBN or taken from your agency's file.
• Ebook covers from the author's artAn ebook cover for each edition, made from your own artwork with the title in its language.
• ExportPrint PDFs for upload, and JPEG or PNG images for stores and promotion.
• Hardcover wrapsHardcover case wraps with KDP's board sizes, hinges and wrap-around.
• Localized cover setsOne cover design for every edition: title, tagline, back text and spine in each language.
• MockupsYour cover on a 3D book and on a phone, for posts, ads and your website.
• Print proofCheck a print cover before you order a proof copy: on a true-size 3D book, through a loupe, and in its printed colours.
• Print wrap editorThe full paperback wrap: back, spine and front, sized from the page count and paper.
• Spine direction per marketSpine text that runs the way each market expects.

Ebook builder

• Cover sizingA store-ready ebook cover, and a lighter copy inside the EPUB.
• EPUB 3 builderA store-ready EPUB 3 of each edition, with its navigation, metadata and cover.
• Language metadata and hyphenationEach edition's language is set on every page, and passages in other languages are marked.
• PreviewerPage through your ebook as Kindle, Apple Books and Kobo show it, before you upload it.
• Review copiesSend advance readers a private link to your ebook: they read it in the browser or download it with their name inside, and you see who opened it.
• ThemesA look for your ebook: classic, modern or elegant, chosen in the ebook's settings.
• Validation gateEvery ebook is checked with EPUBCheck, the stores' own validator, before you download it.

Free public tools

• Barcode generatorAn ISBN barcode as a print-ready PDF or SVG, free.
• EPUB validatorCheck an EPUB with EPUBCheck, the stores' own validator, and see what it finds in plain words.
• Language checkerWhich stores sell ebooks and print books in a given language. Free, no account needed.
• Page count estimatorHow many pages a book will print at, from its word count, for each trim.
• Plan your bookWhat publishing your book will cost, what each sale earns in each country, and how many copies pay it back.
• Royalty calculatorWhat KDP pays you per sale in each marketplace, for print and ebooks.
• Spine and cover size calculatorThe spine width and full cover size for a KDP paperback or hardcover, from its trim, paper and pages.

Guidance and support

• Help centreEvery guide in one place.
• How it works pagesA short guide for every feature: what it does, what you need and what you get.
• Onboarding toursA short walkthrough the first time you open each part of the studio.
• Tooltips and contextual helpHelp next to every field and button.

ISBN and legal

• Agency guidesWhat to enter in your ISBN agency's form for each format, filled from the edition.
• Copyright page builderA copyright page in the edition's language, with the ISBNs, publisher, edition and translation credit.
• Disclosure recordsEvery AI answer given for an edition, with who gave it and when.
• ISBN plannerWhich formats need their own ISBN, and how many to get from your agency.
• ISBN registryYour ISBNs in one list: which format each one is on, and whether it's registered and published.
• Project start agreementConfirm once per book that you hold the rights, before work starts.

Manuscript import and preparation

• AI proofreadingA full proofread of your manuscript: suggested fixes, line by line, for you to accept or reject.
• Front and back matterA title page from your edition's details, and pages the studio adds at the end: "Also by", each series in order, and a newsletter page.
• ImportBring in your manuscript from Word, Google Docs, an EPUB, Markdown or plain text, and the studio finds its chapters.

Marketing kit

• Audiobook kitYour edition made ready to record as an audiobook: scripts, names to say right, a square cover and each store's rules.
• Book pageOne page for your book that sends every reader to their own country's store.
• Free-promo plannerPlan your KDP Select free days, the promo sites to book around them, and what the days brought.
• Launch checklistEvery step from manuscript to launch day for this edition, in order, with what's done already.
• Launch kitYour launch texts, written in the edition's language: blurbs, taglines, review requests and a month of posts.
• Social imagesPictures for your posts and ads, made from your covers: 3D mockups, quote cards and announcements.

Metadata and store kits

• AI disclosure answersWhat to answer in KDP's AI questions, from what you tell the studio about this edition.
• Edition metadataEverything the stores ask about an edition: subtitle, series, author, description, keywords and categories.
• KDP kitsEvery field KDP asks for, in its order, ready to paste, with the files to upload.
• Localized blurb and keywordsThe store description and keywords, written for this edition's own language and readers.
• Other store kitsPaste-ready kits for Apple Books, Kobo, Google Play, Barnes & Noble, distributors and national stores.
• Price and royalty calculatorPrinting costs, the lowest price KDP accepts, and your royalty in each marketplace.
• Price lawsFixed book price laws in the countries you sell in, and what they ask of you as the publisher.
• Selling directSell the ebook from your own shop: the files to upload, a note for your readers, and what BookFunnel, Payhip and Shopify take.
• Upload trackerWhere each format of each edition is: planned, uploaded, in review or live, store by store.
• Where-to-sell guideWhich stores sell each of this edition's formats in its language, such as Polish ebooks outside KDP.

Print interiors: paperback and hardcover

• Book typesettingJustified, hyphenated pages with running heads, page numbers and chapters opening on the right, or a dyslexia-friendly style.
• HardcoverHardcover interiors for KDP's case laminate, from the same manuscript.
• IngramSpark print filesMake a paperback or hardcover ready for IngramSpark as well as KDP, so bookshops and libraries can order it.
• Large print editionA large-print paperback of the same edition, with its own ISBN, in 16- or 18-point type.
• Margins by page countThe inside margin grows with the page count, as KDP requires.
• Preflight reportPage count, spine width, fonts and margins checked before you upload.
• Print previewSee a paperback or hardcover two pages at a time, as the printed book opens, with the trim, the gutter and KDP's margins drawn on.
• Print-ready PDFThe paperback interior as a print-ready PDF, with every font embedded.
• Trim sizes and paperChoose the trim size and paper for each printed format.

Translation studio

• Any other languageTranslations into other languages too, starting from neutral conventions you set in the style bible.
• Automated checksChecks on every line, with no AI: what's missing, what moved and what changed that shouldn't.
• Compare AI modelsTry the studio's AI models on the first lines of your book, then pick the one that translates it.
• Glossary and series memoryNames and terms you settle once, carried from book to book so a series reads the same in every language.
• HarmonizationNames, terms and repeated lines made consistent across the whole book.
• Independent editor passA second pass that checks every translated line against your original.
• Parallel translationYour book in another language, translated line by line from your own manuscript, in stages you approve.
• Partial re-translationTranslate one line, a section, or only what changed, again, without touching the rest.
• Price previewThe price of every translation, shown before anything runs.
• Production languagesLanguages the studio typesets in full: their typography and conventions are built in.
• QA reportWhat each pass changed, what the checks found, and what still needs a human look.
• Side-by-side editorYour original and the translation, line by line: fix any line, and lock the ones that are final.
• Style bibleOne brief for every translator and editor of an edition: names, terms, register and typography.
• Voice referenceThe first chapters, translated first, for you to approve as the voice of the rest.
• Your own AI keyRun translations on your own AI account: your provider bills you for the model, and the studio charges only its fee.
• Your own reviewerInvite your own reviewer by a private link: they fix lines next to the original and sign the translation off.

Writing studio

• AI writing assistantOpt-in help on your own chapter: a critique, a continuity check against your story bible, and line edits you accept or reject.
• Drafts and revisionsEvery version of your manuscript kept: compare any two, word by word, and bring an earlier one back.
• Manuscript editorFix, rewrite and rearrange your manuscript in the studio, chapter by chapter, without uploading it again.
• Outline and scene boardYour chapters as cards: what happens in each, how far it has come and its scenes, in an order you can change by dragging.
• Story bibleYour book's characters, places, things, terms and timeline, each with your notes and the chapters it appears in.
• Write from scratchStart an edition's manuscript in the studio, a blank page and a first chapter, instead of uploading one.