For KDP Self-Publishers

See your book exactly as it'll print — before you order a single proof copy.

Upload your manuscript. Pick your trim size. SpreadViewer shows you the real spread — real margins, real page count, real layout. Free.

Try it free Get the full version — $39.99

Free to preview  ·  $39.99 to export  ·  No subscription. Pay once, use it forever.


What will you make?

Built for the books that actually matter to you.

Not enterprise publishing software. Not a template generator. SpreadViewer is for the book you've been meaning to finish — the one that deserves to look exactly the way you imagined it.

Children's Books

The picture book you've been sketching

Full-page image blocks, panel layouts for sequencing art across spreads, square and landscape formats — everything a children's book needs to look like it belongs on a shelf. Drop in your illustrations, set the layout, see exactly what the printer will see.

Best sizes: 8×10, 8.25×8.25, 8.25×6 Landscape
Poetry Collections

The collection you've been writing for years

Text shapes that turn lines into visual art. Page colors that set the mood of a section. Dividers that breathe space between poems. Your words were always good — now the page can match them.

Best sizes: 5×8, 5.5×8.5
Memoirs & Nonfiction

The memoir or guide you're ready to publish

Clean chapter structure, precise typography, and photo spreads that look like a real published book — not a Word doc with better margins. See every spread as a reader will before a single copy gets printed.

Best sizes: 6×9, 7×10, 8.5×11

How it works

Three steps. No guessing.

SpreadViewer runs in Chrome on your desktop. Open the file, upload your manuscript, and you're looking at your book.

01
Free

Upload your manuscript & pick your trim size

Paste in your text or upload your document. Choose your KDP trim size — 6×9, 5×8, 5.5×8.5, and more. SpreadViewer pours your words into the correct template with real margins and gutters.

02
Free

See your real spread

Left page and right page, side by side, exactly as a reader will hold it. Check your page count, see how chapters break, spot any layout problems before they become print problems.

03
Paid — $39.99

Export at exact KDP dimensions

When it looks right, export it. SpreadViewer outputs your spread at the exact trim size you chose — pixel-perfect, ready to upload to KDP. No resizing, no margin math, no surprises at the printer.

Use whatever computer you want — but make sure to export in Chrome. That's what makes the exact dimensions possible.


And one more thing

"I've never seen an affordable tool that lets you do this to a book interior."

Literary text shapes.

Triangle, Diamond, Hourglass, River, and Chalice — visual arrangements of your prose that you won't find in Word, Vellum, or any other tool at this price. Around 170–185 words per shape hits the sweet spot. Play around with the font size, too — it helps hone the shape just right.

the long road home at dusk, a sky slowly going gold, the years like stones, each one smaller, lighter now, until only this.

Triangle

dawn. one bird, then a second, then a far chorus, then the hedgerow woke, then the wide fields stirred, then the slow climb of light, then the whole valley shining, then the bright hush after, then a far church bell, then a slow footstep, then voices, low, then quiet, then peace, day.

Diamond

the whole town by the shore, watching the tide fall, holding its breath, waiting— then, slowly, the sea returning, to fill the shore again, and the long night came.

Hourglass

the river wound on, down from the hills, through the green vale, bending as it liked, past the old willows, over smooth stones, wide and calm again, never in a hurry, always the low way, past the still meadow, toward the dark reeds, straight once more, slow and certain now, patient to the last, on to the open sea.

River

they lifted the cup between them, and spoke the old words softly, the words their mothers knew, the quiet ones, almost gone, barely a breath now, almost a whisper, softly, low, then drank it slowly down, and set the cup aside, and let the long evening settle, warm and slow around the table, and stayed there talking late.

Chalice


Section dividers you won't find anywhere else at this price.

Elegant typographic separators between scenes and sections. The kind of detail that makes a book feel finished.

— ✦ —
Star Rule
Asterism
· · ·
Ellipsis
─────────
Em Rule
Fleuron

The paid feature

Export at exact KDP dimensions.

When your spread looks right, export it. SpreadViewer outputs a print-ready file at the precise trim size you chose — not close, not approximately, exact.

No resizing in another app. No margin math. No "is this the right size?" anxiety at upload. Just your file, the right size, ready to go.

SpreadViewer runs in Chrome on desktop. That's what makes the precise export possible — Chrome's PDF engine handles the exact dimensions reliably. Other browsers don't.

Supported KDP Trim Sizes
6 × 9" Most popular
5 × 8" Compact novel
5.5 × 8.5" Trade paperback
7 × 10" Workbook / large
8.5 × 11" Full letter / journal

Nathan Dornstadter, maker of SpreadViewer

From the maker

Hi, I'm Nathan.

SpreadViewer is the tool I wanted. It's honest about what it is — a viewer, a formatter, a confidence-builder before you print. Not a word processor. Not InDesign at a discount. Just the thing that answers the question every KDP author asks: will this actually look right?

And personally, I think subscriptions are getting out of hand. So once you pay, it's yours forever.

Let me know if you want a new feature or something rearranged and I'll try to add it. Email me directly. I'll see what I can do to help.

— Nathan

Send me an email.  questions@spreadviewer.com


Pricing

Free to see it. $39.99 to ship it.

Preview is always free. Pay once when you're ready to export — and use it for every book you ever write.

One-Time Purchase · No Subscription
$39.99

Pay once  ·  Yours forever


  • Upload your manuscript & preview as a real spread
  • All KDP trim sizes
  • Real margins, gutters, page count

  • Export at exact KDP trim dimensions
  • All 6 literary text shapes
  • Typographic section dividers
  • Print-accurate page color palette
  • Typography controls
Get SpreadViewer — $39.99, yours forever

🖥️ Desktop only  ·  No mobile support  ·  Use Chrome for export


Questions

Is the preview really free?

Yes. Upload your manuscript, pick your trim size, and see your real spread — margins, gutters, page count, everything. No credit card. The export is what costs $39.99.

Why Chrome only?

The export outputs your spread at exact KDP dimensions. Chrome's PDF engine handles that precisely. Other browsers don't — the dimensions come out wrong. It's not an arbitrary restriction, it's what makes the export reliable.

What formats can I upload?

SpreadViewer works with Word documents and plain text. Most authors write in Word or Google Docs — export to .docx and you're ready to go.

What are the literary text shapes?

Triangle, Diamond, Hourglass, River, and Chalice — visual arrangements of your prose that you won't find in Word, Vellum, or any other tool at this price. Around 170–185 words per shape hits the sweet spot. Play around with the font size too to really hone the shape.

Is this a subscription?

No. I think subscriptions for tools like this are the wrong model. You pay $39.99 once and it's yours. Future updates included. No renewal, no account.

Will this work on my phone or tablet?

No, you'll need to use your desktop or laptop. SpreadViewer is not optimized for mobile.

What if something doesn't work?

Email me directly. Let me know if you want a feature or if something isn't working properly and I'll take a look at it.

Ready?

Stop ordering proof copies blind.

See your book exactly as it'll print. Then export it at the exact KDP size, ready to upload. $39.99, once, forever.

Get SpreadViewer for KDP

🖥️ Desktop only  ·  No mobile support  ·  Use Chrome for export