🖥️ Everything happens in your browser — nothing is sent to a server.

Preview your book, page by page

Paste your text → watch it flow into real printed pages at Amazon KDP trim size, margins and gutter included. Free, no sign-up — and nothing leaves your browser.

Your text (Markdown)

# Foreword

Writing a book means, first of all, agreeing to fill pages. Lots of pages.
Paste your text on the left: you will see, live, how it flows once printed
in the trim size you picked. Every level-1 heading starts a new chapter, on
a fresh page — just like in a real book.

The preview takes into account the **margins** and the **gutter** (the inner
margin, on the binding side) recommended by Amazon KDP. The thicker the book,
the wider that gutter gets: it is automatic.

# Chapter one

Once upon a time, a manuscript slept in a drawer. Its author thought it too
short to become a book, too long to stay a short story. He did not know yet
that between the two hides a trim size, a justification, a typographic
breathing — in short, everything that turns a file into an object.

> A book is not a text: it is a text *laid out on pages*.

Here is what page layout brings:

- margins that let the eye breathe;
- a gutter that keeps words from sinking into the binding;
- a discreet page number, at the bottom of the page;
- chapters that always open on a fresh page.

## A matter of rhythm

Readers do not read characters, they read a rhythm. Paragraphs flow, blanks
punctuate, headings signpost. When everything is right, you notice nothing —
and that is exactly the point.

# Chapter two

One last step remains: seeing. Until you have seen your text poured into
pages, you do not really know what you have written. That is what this
preview is for: showing you your book before it becomes one.

# = new chapter (new page) · ## = subheading · - = list · > = quoteBook trim size (Amazon KDP)

Trim size6″ × 9″

Estimated pages—

Gutter (binding)0.375″

🔒 100% in your browser — your text is never sent or stored on a server.

Preview

Paginating…

Faithful preview (KDP margins + gutter). The page number appears at the bottom.

Happy with the layout? Move on to your real print-ready PDF — interior, cover and ePub ready for Amazon KDP.

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✅ What you see

Your book split chapter by chapter, page by page
The margins and gutter (binding edge) KDP recommends
An estimated page count for your trim size

ℹ️ Good to know

It's a faithful estimate, not the final print file
A # heading starts a new chapter
The gutter widens as the book gets thicker

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