Uploading Your Paperback to KDP: The Order of Operations

Uploading a paperback to Kindle Direct Publishing goes smoothly when you do it in the right order: finished files first, metadata second, print options third, then the Previewer. You need a print-ready interior PDF sized to your exact trim, a full-cover PDF, your description, categories, and keywords, plus your ISBN decision. The screens at KDP evolve, but the sequence stays the same.

What to have ready before you log in

Half the frustration authors report comes from starting the upload before the pieces are finished. KDP lets you save and return, but the smoothest path is to gather everything first. Have these in hand:

• Interior PDF, sized to the physical trim you plan to sell (a 6x9 book needs a 6x9 page in the PDF), with all fonts embedded.
• Cover PDF, a single full-cover file (back, spine, front) built to your page count, or the front-cover image if you plan to use KDP's cover tool.
• Book description, up to 4,000 characters. Write the best version you can, because this is the copy that sells the book on the product page.
• Categories and keywords. KDP gives you up to five keyword slots and a set of browse categories. Choose them deliberately, since they decide where readers find you.
• ISBN decision. Free KDP-assigned or your own from Bowker. More on that below.
• Author and contributor names exactly as you want them credited.

If your interior is not yet typeset, a professional Word or InDesign template is the fastest way to a retail-quality page. Our Elite book design template gives you a designer-built interior you fill with your own words, and it exports a print PDF that matches your trim.

The order of operations

1. Start a new paperback. From the Bookshelf, choose to create a new paperback title. This opens the details screen.
2. Enter the details. Language, title and subtitle, series and edition, author, and contributors. Take care with spelling, because Amazon's search corrects common misspellings and an odd spelling can cost you visibility.
3. Write the description and set rights. Paste your polished description, confirm you hold the rights, and add your keywords and categories. This is the metadata that makes or breaks discovery, so do not rush it.
4. Choose your ISBN. Take the free KDP ISBN or provide your own. This step locks the identifier to the edition.
5. Set the print options. Interior color (black and white or full color), paper (white or cream), trim size, bleed, and cover finish (glossy or matte). These must match how the file was built.
6. Upload the interior, then the cover. KDP accepts a print PDF for the interior. Upload the cover as a full-cover PDF or build a simple one with its tool.
7. Run the Previewer. KDP renders every page and flags problems. Clear all errors before you move on.
8. Set pricing and distribution. Choose territories, list price, and whether to include expanded distribution to bookstores and libraries.
9. Order a proof, then publish. A physical proof takes several days to arrive but shows you the real book. Approve only after you have held it.

The ISBN decision, in plain terms

KDP offers a free ISBN that lists Amazon as the publisher of record and works only on Amazon. It is fine if Amazon is your only channel. If you want your own imprint on the record, or you plan to also publish through IngramSpark for wider reach, buy your own ISBN from Bowker (myidentifiers.com in the US) and use it here instead. A free KDP ISBN cannot travel to another platform, so decide before you commit. A useful note on barcodes: KDP adds one for free if you leave the lower-right area of the back cover clear, so you rarely need to buy a separate barcode.

Previewer gotchas that stall first uploads

The Previewer is strict, and that is a gift, because it catches issues before a reader ever sees them. The three that trip up most people:

• Margins and gutter too tight. Text that runs close to the trim or into the binding gets flagged. Give inner (gutter) margins room, and more as page count climbs.
• Bleed mismatch. If images run to the edge of the page, the file must be built with bleed, and you must select the bleed option to match. If nothing runs to the edge, leave bleed off. A mismatch is the classic Previewer warning.
• Fonts not embedded. A PDF that references fonts instead of embedding them can reflow or drop characters on the printer. Embed every font when you export. A template built for print handles this for you.

One more habit worth keeping: the trim you pick on the options screen must match the page size inside your PDF. A 6x9 selection with a letter-size PDF will not preview correctly.

Frequently asked questions

Do I upload the interior or the cover first?

Interior first, then the cover. KDP builds the cover template around your final page count and paper choice, so the print options and interior come earlier in the sequence, with the cover upload and Previewer near the end.

Why does KDP keep flagging my margins?

Usually the inner margin is too small for the page count, or content sits inside the safe area near the trim. Increase the gutter and pull text away from the edges, then re-upload. A template sized to your trim prevents most margin warnings before they happen.

Can I fix files after publishing?

Yes. You can upload a corrected interior or cover and republish, and KDP re-runs the Previewer on the new files. Small text and metadata edits are routine. Just avoid changing the trim size or ISBN after release, since those define the edition.

Prefer to have it done for you? Cantos, the book designer from our team, can typeset your whole manuscript and hand back press-ready files. See your own book first with a free 30-page preview, no credit card required.