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If you are getting ready to upload a paperback to Amazon KDP, the cover file is where most first-time authors trip up. The interior is forgiving; the cover is not. One wrong number and the upload fails or, worse, the printed book comes back with the spine text sliding onto the front cover. This guide gives you the exact formula, a table of full cover sizes for the most common trim sizes, and a worked example you can copy.

If you would rather skip the arithmetic, our free KDP Spine Width & Cover Size Calculator does all of this for you and gives you a downloadable 300 DPI template. Everything below is the reasoning behind it, so you can check the numbers yourself.

The one formula that matters

According to KDP’s own Help page on paperback cover dimensions, your full cover (front, spine and back laid flat as a single image) is built like this:

• Cover width = bleed + back cover width + spine width + front cover width + bleed
• Cover height = bleed + trim height + bleed

Bleed is 0.125″ (3.2 mm) added to the top, bottom and outside edges. Because you add it on both sides of the width, that is 0.25″ extra in total, both across and up-and-down. Back cover width and front cover width each equal your trim width.

So, written out in plain numbers: full cover width = (2 × trim width) + spine width + 0.25″, and full cover height = trim height + 0.25″.

Step one: work out your spine width

The spine depends on two things you control: your page count and your paper. KDP publishes a per-page multiplier for each paper type:

Paper / ink	Spine width per page
Black ink, white paper	0.002252″
Black ink, cream paper	0.0025″
Standard color ink	0.002252″
Premium color ink	0.002347″

Multiply your final page count by the matching number. A 300-page book on white paper has a spine of 300 × 0.002252 = 0.6756″. On cream paper the same book is 300 × 0.0025 = 0.75″. That difference of about 0.07″ sounds tiny, but it is enough to misalign wrap-around artwork, which is why choosing your paper before you design the cover matters.

Use your final page count, including blank pages at the front and back. If you add or remove even a few pages after the cover is done, recalculate the spine.

Full cover sizes for common trim sizes (300 pages)

Here are the calculated full cover dimensions for five popular trim sizes at 300 pages. These are worked from the formula above, so you can reproduce every figure with a calculator. Sizes are in inches: width × height.

Trim size	Spine (white)	Full cover, white	Spine (cream)	Full cover, cream
5″ × 8″	0.6756″	10.9256″ × 8.25″	0.75″	11.0″ × 8.25″
5.25″ × 8″	0.6756″	11.4256″ × 8.25″	0.75″	11.5″ × 8.25″
5.5″ × 8.5″	0.6756″	11.9256″ × 8.75″	0.75″	12.0″ × 8.75″
6″ × 9″	0.6756″	12.9256″ × 9.25″	0.75″	13.0″ × 9.25″
8.5″ × 11″	0.6756″	17.9256″ × 11.25″	0.75″	18.0″ × 11.25″

Notice how the height never changes with page count, only with trim height. Page count only moves the width, through the spine. For other trim sizes or page counts, plug your numbers into the free spine and cover size calculator. Not sure which trim size to pick in the first place? Think about your genre, how your competitors look on the shelf, and what your printing cost will be before you commit.

A worked example, start to finish

Say you are publishing a 6″ × 9″ novel with 240 pages on cream paper.

1. Spine: 240 × 0.0025″ = 0.60″.
2. Width: (2 × 6) + 0.60 + 0.25 = 12.85″.
3. Height: 9 + 0.25 = 9.25″.
4. Final canvas: 12.85″ × 9.25″.

To build the file in a design tool at 300 DPI, multiply each dimension by 300: that is 3,855 × 2,775 pixels. Place a vertical guide at 0.125″ plus the back cover width (6″) from the left edge, and another 0.60″ further right. The area between the two guides is your spine; the area to the right of it is the front cover.

Bleed, safe zone and spine text

Three margins keep your artwork from being trimmed into trouble. Per the same KDP Help page:

• Bleed (0.125″ / 3.2 mm): extend backgrounds and images all the way to the outer edge of the cover file on the top, bottom and outside edges. If your color stops at the trim line, a thin white sliver can show after cutting.
• Text margin (at least 0.125″ / 3.2 mm inside the trim lines): keep front and back cover text away from the edges so it is not clipped.
• Spine text clearance (at least 0.0625″ / 1.6 mm): leave at least this much space between spine text and the edge of the spine.

KDP also says a book needs at least 79 pages before you can include spine text. Below that, the spine is simply too thin. At 79 pages on white paper the spine is only about 0.18″, so a short book is usually better off with a clean, text-free spine. You can also upload your cover with or without a barcode; if you leave it off, KDP places one on the back cover for you, so keep that area of the back cover uncluttered.

Common mistakes that cause rejected uploads

• Using a page count from an early draft. Recalculate after your last formatting change.
• Forgetting bleed on the outside edges. Both the width and the height need the extra 0.125″ on each outer side.
• Picking the wrong paper multiplier. Cream and white are not interchangeable in the formula.
• Putting key text too close to the trim or the spine fold. Design as if the edges could shift slightly, because in print they can.
• Designing the front cover first, the spine last. Work out the full canvas first, then design inside it.

Before you upload, open your PDF and confirm its pixel or inch dimensions match the canvas you calculated. KDP’s Cover Creator and previewer are useful as a final check, but the numbers should already be right before you get there.

Your cover is one piece of the launch

A correctly sized cover file gets your book printed; it does not get your book noticed. Once the files are done, you will need an author bio for the book page and the back cover (our author bio guide with examples and the free Author Bio Generator help here), and a plan for the weeks around release, which our book launch checklist walks through. If you want everything you send to reviewers, podcasters and bloggers in one tidy package, the Author Media Kit template is built for exactly that.

Quick reference

• Full width = (2 × trim width) + spine + 0.25″
• Full height = trim height + 0.25″
• Spine = pages × 0.002252″ (white, standard color), × 0.0025″ (cream), × 0.002347″ (premium color)
• Spine text only at 79+ pages, with 0.0625″ clearance
• Keep text at least 0.125″ inside the trim

Rather than doing this by hand every time you change a page count, use the KDP Spine Width & Cover Size Calculator and download the template. These figures come from KDP’s official Help pages; KDP can update its specifications, so always double-check against the current KDP Help page before you upload a final file.

Not sure which size to choose in the first place? Read KDP trim sizes explained for how standard, large and custom sizes compare.

Only have a word count so far? The free Word Count to Page Count Calculator estimates your paperback page count, which is the number you need before the cover dimensions above can be finalised.

Designing in Canva? Follow our step-by-step guide to making a KDP paperback cover in Canva with a free template.

If your book fits a podcast’s audience, most hosts are happy to have you on — the show needs guests just as much as you want the exposure. The part authors usually get wrong isn’t the book, it’s the pitch: a generic “please feature me” email tells a host nothing about why their specific audience would care, and it gets deleted along with the other twenty that day.

This post walks through how to find shows worth pitching, what to send them, and how to follow up — without coming across as another mass-blasted request.

Why podcasts are worth the effort

A podcast interview is different from a one-off blog mention: it stays up indefinitely, it’s discoverable by search and by the show’s back catalog for years, and listeners who finish a 40-minute conversation with you are far more invested than someone skimming a review. For a self-published author without a marketing budget, that’s a lot of reach for the cost of an email and an hour of your time.

What a host is actually looking for

Hosts aren’t evaluating whether your book is good — they’re evaluating whether you’ll be an easy, interesting guest for their specific audience. That means three things matter more than your book’s genre or sales numbers: a clear, specific angle (not “I wrote a novel,” but the one thing about it or your process that’s actually worth 40 minutes of conversation), evidence you’ve listened to the show and know it’s a fit, and confidence you’ll show up prepared rather than needing to be carried through the interview.

Before you pitch anything

Have three things ready before you send a single email:

1. A short bio and your book’s one-line hook, so you’re not writing them from scratch for every pitch. If you haven’t put this together yet, see our guide on how to write an author media kit. (Our free Author Bio Generator can draft this for you if you haven’t written one yet.)
2. Three to five talking points or questions you’d be comfortable answering — this is what you’re actually offering the host, and it’s often the difference between a form rejection and a booked slot.
3. A link to your media kit, so a host who’s interested can get everything they need in one place instead of emailing you back with follow-up questions.

Finding the right shows

Don’t start with “biggest podcast in my genre.” Start with fit:

• Search your book’s specific topic or theme (not just its genre) alongside “podcast” — niche, topic-specific shows convert better than broad ones and are usually more open to first-time guests.
• Look at who’s been a guest on shows you like recently — if other debut or self-published authors have appeared, that’s a strong signal the host is open to guests like you.
• Listen to (or at least skim transcripts of) two or three recent episodes before you pitch. Five minutes here is what separates a pitch that clearly knows the show from one that could’ve been sent to anyone.

Writing the pitch

Keep it to a few short paragraphs a host can read in under a minute:

• Subject line: specific, not clever. Name the topic, not just your book title.
• Opening line: reference something concrete from a recent episode — this proves you’re not mass-emailing.
• One short paragraph on your book and the specific angle you’d bring, not a full synopsis.
• Your talking points, listed — this does the host’s prep work for them.
• A clear, low-effort ask: are you open to a guest recommendation, and if so, here’s your availability.

Common mistakes

The pitches that get ignored tend to make the same handful of errors: sending the same paragraph to fifty shows with the name swapped in, leading with the book’s full synopsis instead of why it fits this audience, no talking points (leaving the host to invent the interview themselves), and following up more than once without new information to add.

After you send it

If you haven’t heard back in a week or two, one polite follow-up is normal — hosts get busy. More than that starts to read as pressure rather than interest. If a host says no or doesn’t respond, that’s not a verdict on your book; it usually just means it wasn’t the right fit for that particular audience right now.

When a host says yes, the next step is preparing for the conversation itself. Our guide to author interview questions and answers covers the questions you are most likely to hear and how to shape short, confident answers.

Putting it together

A good pitch is really just your media kit, pointed at one specific show. If you’ve already built yours using our guide on how to write an author media kit or worked through your bio using our author bio guide, you already have most of what a pitch needs — the podcast pitch is just the shortest, most targeted version of it.

Our Author Media Kit Template includes a dedicated podcast-pitching guide and worksheet alongside the rest of the kit, if you’d rather work from a structure than build the outreach process from scratch.

Your author bio might be the shortest thing you write about your book — and the one most likely to get skipped, rewritten at the last minute, or copied word-for-word off the back cover. That’s worth fixing, because it’s often the first thing an editor, podcast host, or bookstore event coordinator reads before deciding whether to reply to you at all.

This post covers what a good author bio actually needs to do, gives you real examples at three different lengths, and walks through the mistakes that make first-time authors’ bios blend into the pile.

Why your bio matters more than it feels like it should

A bio does one job: it answers “why should I care who wrote this?” in a few seconds. For an author with several books out, past reviews and sales do some of that convincing. For a first-time author, the bio is doing that work alone — there’s no track record to lean on yet, so it has to build trust on its own terms.

That doesn’t mean padding it with credentials. It means being specific enough that a reader believes a real person wrote it, and giving them one clear reason to keep reading.

The three lengths you’ll actually need

Different places ask for different amounts of space. Having all three ready means you’re never rewriting your bio under deadline pressure.

• One-liner (10–15 words) — for bylines, contributor pages, and anywhere space is tight.
• Short bio (2–3 sentences) — for social profiles, guest posts, and the back of your book.
• Long bio (100–150 words) — for your website’s About page, press features, and speaker introductions.

Example author bios for first-time authors

Here’s the same fictional first-time author written at all three lengths, so you can see how the same facts get expanded or compressed.

One-liner: Maria Torres writes contemporary fiction about family, memory, and the Pacific Northwest.

Short bio: Maria Torres is a first-time novelist based in Portland, Oregon. Her debut novel follows three estranged sisters untangling a decades-old family secret. When she isn’t writing, she works as a high school librarian and spends most weekends hiking with her dog.

Long bio: Maria Torres is a first-time novelist and high school librarian based in Portland, Oregon. Her debut novel follows three estranged sisters who return to their childhood home after their mother’s death, only to discover a secret that reshapes everything they thought they knew about their family. Maria has spent the last decade helping teenagers find books that speak to them, an experience that shaped her own approach to character and voice. She holds a degree in library science and has contributed essays on reading and memory to several regional publications. She lives with her partner and a very opinionated rescue dog, and is currently at work on her second novel.

Common mistakes first-time authors make

• Writing in first person. Bios are almost always written in third person, even though you’re the one writing them — it reads as more professional and is easier for others to lift and reuse.
• Listing every credential. One or two relevant details beat a resume. Pick what’s actually interesting or relevant to this book.
• No personality or hook. A bio that could describe a thousand other authors doesn’t help anyone remember you. One specific, human detail goes a long way.
• Forgetting where to find you. If someone wants to follow up, make it easy — a website or the one social platform you actually use.
• Reusing your book’s marketing copy. Your bio is about you, not a second synopsis of your book. Keep the two separate.

Where your bio fits into the bigger picture

Your bio is one piece of a complete author media kit — alongside your book details, headshot, cover image, and contact info. If you haven’t put the rest of that together yet, our guide on how to write an author media kit walks through exactly what to include, and our Author Media Kit Template gives you a ready-made layout to drop your bio and the rest of your details into.

Once you have a version you like, you can also generate a first draft in seconds with our free Author Bio Generator — pick your genre, tone, and pronouns and it will give you a short, medium, and long bio to start from.

If you’re also getting ready for launch day, see our book launch checklist for self-published authors for the fuller step-by-step version of everything else to prepare.

Want to see the framework applied? Read our debut author bio examples for eight original samples across novels, memoir, non-fiction and children’s books.

Looking for more free tools for authors? Our free tools page has KDP calculators, generators, and more, all free to use.

Related guides: how to write your Amazon Author Central bio, third person author bio examples and short author bio examples for social media.

If you’re working through a book launch checklist, the press kit is one of the items that gets overlooked most often — and one of the first things a podcast host, blogger, or local paper will ask for once you start pitching. Self-published authors get asked for a press kit just as often as traditionally published ones — the difference is nobody hands it to you already made. Here’s a working checklist to run through before you send anything to a podcast, blog, or local paper.

The Press Kit Checklist

• Bio, two lengths. A one-line version for quick intros and a three-sentence version for longer write-ups. Write both in third person. If you’d like a head start, our free Author Bio Generator can draft a short and long version for you in seconds.
• Book summary, not the blurb. Your back-cover copy is written to sell; a media kit needs a plain-language summary a host can paraphrase without having read the book.
• 5–8 interview questions. This is the single highest-value item in the whole kit — it’s what turns a “maybe” into a booked interview, because it does the host’s prep for them.
• High-res headshot and cover image. At least 1000px wide, no phone-camera shots with visible background clutter. Our free KDP Spine Width & Cover Size Calculator gives you the exact spine width, full cover dimensions, and a downloadable 300 DPI template — handy to have ready before this stage of your checklist.
• Where to buy + where to follow. One clean list — retailer link, website, the one or two social profiles you’re actually active on.
• Any prior coverage. Even a single podcast appearance or local write-up belongs here. If you have none yet, it’s fine — just don’t leave an awkward empty section, drop it entirely until you do.
• Contact info that reaches you fast. Not a contact form — a direct email a host can reply to.

What Trips Up Most Self-Published Authors

Two things, consistently: sending a Word doc with mismatched fonts instead of something that reads like a finished document, and forgetting the interview questions entirely. Traditionally published authors often get both handled by a publicist — self-published authors have to build both themselves, which is exactly why having the structure above written down first (before you’re pitching under a deadline) makes the difference.

Skip the Blank-Page Problem

If you’d rather start from a finished layout than a blank slide, the Author Media Kit Template covers every item on this checklist across five pre-written, editable pages in Google Slides or PowerPoint — plus two bonus guides on pitching podcasts and using your kit well once it’s built.

This press kit checklist is one piece of a bigger book launch checklist — pair it with our guide on how to write an author media kit, or browse the full Author Media Kit Template Studio for the rest of the toolkit.

Sorting out your print files too? Our KDP paperback cover size guide has the exact formula and a full-cover size table for common trim sizes.

More launch publicity guides: a free sample press release for your book launch and what a book publicist costs.

If you’ve ever tried to pitch a podcast, a bookstore, a reviewer, or a journalist and gotten silence back, the problem is often not your book — it’s that you never gave them an easy way to say yes. That’s what an author media kit solves.

An author media kit (sometimes called an author press kit) is a single document you can hand to anyone who might want to feature you: a short bio, your book details, a professional photo, contact info, and a few talking points — all in one place, ready to forward. It saves the other person from having to dig through your website or Instagram to figure out who you are and why you’re worth covering.

This post walks through exactly what to put in one, in what order, so you can either build it yourself or adapt a ready-made template.

Why you need one, even as a new author

Every producer, blogger, and bookstore event coordinator is busy. If they have to ask you three follow-up questions before they can even consider featuring you, most won’t bother — they’ll move to the next pitch in their inbox. A media kit removes that friction. It’s the difference between “let me get back to you” and “here’s everything, let’s talk.”

This matters just as much for a debut author as for someone with ten books out. In fact it matters more early on, because you don’t yet have a track record doing the convincing for you — the kit has to do that work.

What goes in an author media kit

A good media kit for self-published authors covers six things, in this order:

1. Author bio (two versions). A short bio (2-3 sentences, for quick intros) and a longer bio (one paragraph, for features that want more context). Write both in third person, and lead with what’s genuinely interesting about you — not just “author of X.” If you’d like a head start on the wording, our free Author Bio Generator can draft a short and long version for you in seconds — you can then fine-tune it here.
2. Book information. Title, one-line hook, a 100-150 word synopsis, genre, publication date, and where to buy it. If you have more than one book, list your most recent or most relevant title first and mention the others briefly.
3. Professional headshot. One clean, high-resolution photo. It doesn’t need to be a studio shoot — but it should be current, well-lit, and match how you look now (not five years and one hairstyle ago).
4. Book cover image. High-resolution, print- and web-ready. Journalists and bloggers will often use this directly in their piece.
5. Contact and social info. Email address, website, and the one or two social platforms where you’re actually active — not every platform you’ve ever created an account on.
6. Talking points or sample interview questions. Three to five topics you could speak on, or questions you’d be comfortable answering. This is the piece people skip most often, and it’s often what gets you booked — it shows the interviewer you’d be easy to work with and gives them something concrete to build a segment around.

How to put it together

You have three realistic options:

• Design it yourself in Canva or Google Slides. Doable, but expect to spend a few hours getting layout, spacing, and image sizing right if you’re not used to design tools.
• Hire a designer. Fast and polished, but it’s an added cost most self-published authors are trying to avoid early on.
• Start from a template built specifically for this — one where the sections above are already laid out, and you’re just swapping in your own bio, photo, and book details.

If you’d rather not start from a blank page, our Author Media Kit Template is built around exactly the six sections above, in an editable Google Slides / PowerPoint file — so the layout work is already done and you just fill in your own information.

Your media kit is just one piece of getting ready for launch day — for the fuller, step-by-step version of everything else to prep beforehand, see our book launch checklist for self-published authors.

A few things to avoid

Don’t pad it with information nobody asked for — a media kit is meant to be scanned in under a minute, not read cover to cover. Don’t use a photo that’s outdated or low-resolution; it’s often the first thing people notice. And don’t skip the talking points section — a media kit with just a bio and a book blurb is only half as useful as one that also makes it easy for someone to actually put you on air or in print.

Next step

Once your media kit exists, keep it somewhere you can share a link to instantly — a PDF on your website, a Google Drive link, or attached to your email signature — so that whenever an opportunity comes up, you’re not scrambling to assemble one from scratch.

Looking for more free tools for authors? Our free tools page has KDP calculators, generators, and more, all free to use.

Ready to skip the blank page? See the full Author Media Kit template and start filling in your own details today.

Planning launch publicity? Pair your media kit with a book launch press release.