How to Format a Book in LibreOffice Writer for KDP (2026)

LibreOffice Writer is a free, open-source word processor that runs on Windows, Mac, and Linux, and it is fully capable of producing a clean, professional book manuscript. Many authors assume they need an expensive program to prepare a book for Amazon KDP, but Writer gives you the tools that matter most: paragraph styles, page styles, automatic tables of contents, headers and footers, and reliable PDF and EPUB export. If you learn to use those tools properly, you can format a book in LibreOffice Writer without wrestling with manual spacing, inconsistent fonts, or a manuscript that falls apart every time you edit a chapter.

The biggest mistake authors make is formatting by hand. They press Enter again and again to push text down a page, tap the space bar to centre a heading, or use tabs to fake an indent. Those shortcuts look fine on screen but break the moment the text changes, and they cause real problems when the file is converted for print or ebook. When you format a book in LibreOffice Writer the right way, you let styles do the work: one change to a style updates every matching paragraph in the whole book, and the structure stays intact from the first draft to the final export.

Set Up Your Page Size, Margins, and Page Styles

Before you type a single chapter, set up the page itself. For a paperback, a common trim size is 6×9 inches, which suits most novels and non-fiction books. Go to Format, then Page Style, and set the width and height to match your chosen trim size. This step matters because a book formatted at the wrong page size will need to be redone later, and margins that look generous on a letter-size page can become cramped on a smaller trim.

Margins need just as much care. A book needs an inside margin, often called the gutter, that is wider than the outside margin, because part of the page disappears into the binding. Use mirrored margins so the left and right pages mirror each other, with the wider margin always on the binding side. Check the current KDP specifications for your page count and trim size before you settle on numbers, since the required gutter grows as the book gets thicker.

Page styles also let you give different pages different behaviour, which is essential for a real book. Your title page, copyright page, and chapter openings should not carry the same header and footer as the body pages. Writer supports different first, left, and right pages, so you can suppress page numbers on front matter, start numbering where the story begins, and keep headers consistent through the body. Set these page styles up before you write, and your book will look deliberate instead of improvised.

Build a Clean Style System for Chapters and Body Text

Paragraph styles are the heart of book formatting in Writer, and they are simpler than they sound. A paragraph style is a saved bundle of formatting: font, size, line spacing, alignment, indentation, and spacing before and after the paragraph. Instead of formatting each paragraph individually, you apply a style, and every paragraph with that style looks the same. When you want to change the look, you edit the style once and the whole book updates.

Start with two styles: one for chapter headings and one for body text. Use Heading 1 for your chapter titles, so Writer recognises them as headings and can build a table of contents from them automatically. For body text, choose a readable serif font at a comfortable size, justified alignment, and a first-line indent for ordinary paragraphs. The standard convention is that the first paragraph after a chapter heading, a scene break, or a section heading has no indent, while every following paragraph is indented.

Spacing is where most manuscripts go wrong, so be strict with yourself here. Never use empty paragraphs to create space between paragraphs or sections, and never use tabs or double spaces to indent or align text. Turn on formatting marks under Tools, then Options, so you can actually see tabs, spaces, and paragraph breaks on screen. Empty paragraphs look harmless, but they create uneven gaps in print and cause strange spacing in ebooks. Real spacing comes from the space-before and space-after settings inside your styles, which stay consistent everywhere.

Keep your style list short: chapter headings, body text, first-paragraph body text, scene breaks, and block quotations are usually enough. The same idea applies in our guide to formatting a book in Microsoft Word for KDP and our guide to formatting a book in Google Docs for KDP. To format a book in LibreOffice Writer well, resist direct formatting and always go through styles.

Format Front Matter, Chapters, and Back Matter

Front matter is everything before chapter one: the title page, copyright page, dedication, table of contents, and any foreword or preface. Keep it simple and consistent with the rest of the book. The title page usually carries the book title, subtitle, and author name, centred, with generous white space. The copyright page carries the copyright notice, edition information, and ISBN if you have one. These pages traditionally have no page numbers and no running headers, which is exactly why you set up separate page styles earlier.

Chapters themselves follow a predictable pattern that readers expect. Each chapter should start on a new page, with the chapter title near the top and the first paragraph unindented. A scene break inside a chapter is usually shown with a centred mark, such as three asterisks, with space above and below it from the style settings rather than from empty paragraphs. Keep chapter titles consistent in wording and numbering, because the table of contents depends on them matching exactly.

Back matter deserves the same attention as the front. This is where an about-the-author page, acknowledgements, or a preview of your next book belongs, and it should use the same styles as the rest of the manuscript. Do not switch fonts or sizes for back matter just because it feels less formal; consistency is what makes a book feel professionally produced. Authors who plan to publish through our guide to formatting a book for KDP print often forget back matter entirely, but a short author bio and a note about other books are easy additions that make the finished book feel complete.

Add a Table of Contents and Page Numbers

A table of contents is not typed by hand in a properly formatted book; it is generated from your headings. Because you used Heading 1 for chapter titles, Writer already knows what belongs in the contents list. Place your cursor where the contents should appear, usually after the copyright page, and insert the table of contents from the Insert menu. Writer will build it from your headings, complete with page numbers, and you can update it at any time if chapters move or titles change.

Page numbers belong in headers or footers, not typed into the body text. Insert a page number field in the footer of your body page style, centred or placed on the outer edge depending on your design, and Writer will number every page automatically. Front matter pages use a page style without the number field, so they stay clean, and body pages carry the numbering. Many self-published books simply start numbering at the first chapter and leave front matter unnumbered.

Check the table of contents after every major edit, and update it before export. A contents list that points to the wrong page is worse than no contents list at all, because it tells the reader the book was not checked. Right-click the table of contents and choose Update Index to refresh it in seconds. After inserting or deleting large sections, glance through the document to confirm the numbering still starts where you intended.

Export a Print-Ready PDF for KDP Paperback

When the manuscript is finished, the print version is exported as a PDF. Use File, then Export As, then Export as PDF, and pay attention to the export settings rather than accepting every default blindly. Embed all fonts in the PDF so the text looks the same on every machine and at the printer, and check that images are at a suitable resolution for print. You can optionally export as PDF/A, an archival variant, but be cautious: PDF/A restricts some features, so only use it if you understand the trade-off.

Before you upload anything, run through a final print checklist. This is the last chance to catch problems that are cheap to fix now and expensive to fix after a proof copy arrives.

• Trim size set to your chosen size, such as 6×9 inches, on every page
• Mirrored margins applied, with a gutter wide enough for your page count
• Fonts embedded in the exported PDF, with no missing-font warnings
• Page numbers present on body pages and absent from front matter
• Table of contents updated after the final edit, with correct page numbers
• No empty paragraphs, double spaces, or stray tabs used for spacing
• Images checked at print resolution and placed without overlapping text
• Bleed and margins checked against the current KDP specifications for your trim size
• A proof copy ordered and inspected before approving the book for sale
• File saved as a template (.ott) so the next book starts from the same setup

Remember an important limitation: a PDF exported from Writer is not automatically checked against KDP requirements. Writer does not know KDP’s bleed, margin, or gutter rules, so check those yourself against the current KDP specifications for your trim size and page count. Order a physical proof copy, check the margins near the binding, and only approve the book when the proof looks right. To format a book in LibreOffice Writer for print, the export is only half the job; the check is the other half.

Export an EPUB or DOCX for Kindle Ebooks

For Kindle ebooks, KDP accepts EPUB and DOCX uploads, and Writer can produce both. To create an EPUB, use File, then Export As, then Export as EPUB. To create a DOCX, save or export a copy in Word format for Kindle Create or KDP workflows that accept DOCX. Writer does not upload directly to KDP as a native format, and there is no one-click publish button; Writer’s job is to produce a clean file in one of those formats.

EPUB export works best with simple, well-structured manuscripts. If your book has complex layouts, floating images, text boxes, or elaborate tables, the EPUB may need cleanup afterwards. That is normal and not a failure of the method. Tools such as Calibre or Sigil let you inspect the EPUB, fix the table of contents, and check how the book looks on different devices. Keep your source manuscript in Writer as the master copy, make fixes there where possible, and re-export rather than patching the EPUB in several places.

Ebook formatting follows different rules from print. Readers can change font size and line spacing, so clean structure matters more than fixed sizes: headings, paragraph styles, and a proper table of contents drive navigation. Place images inline rather than floating, since floating elements behave unpredictably on small screens, and test the EPUB on a phone, tablet, or Kindle previewer before uploading.

Frequently Asked Questions

Is LibreOffice Writer really free for formatting a book for KDP?

Yes, LibreOffice Writer is free and open-source, runs on Windows, Mac, and Linux, and includes the styles, page styles, table of contents, and PDF and EPUB export tools needed to format a book in LibreOffice Writer for KDP.

What trim size and margins should I use for a KDP paperback?

A common choice is 6×9 inches with mirrored margins and a gutter wide enough for your page count, but always check the current KDP specifications for your exact trim size and page count.

Can I upload a LibreOffice Writer file directly to KDP?

No, Writer does not upload directly to KDP as a native format. KDP accepts PDF uploads for print books and EPUB or DOCX uploads for ebooks, so export your finished manuscript in one of those formats and upload that file.

Why does my EPUB look different from my print PDF?

Ebook readers control font size, line spacing, and margins, so ebooks reflow to fit each device, while a print PDF is fixed. Clean styles, proper headings, and inline images keep the ebook readable, and complex layouts may need cleanup in Calibre or Sigil.

What is the most common formatting mistake in Writer manuscripts?

Manual spacing: empty paragraphs, tabs, and double spaces used to create gaps or indents. These break in print and ebooks alike, so use paragraph styles for spacing and indentation, and turn on formatting marks to find and remove manual fixes.

Conclusion: A Clean Manuscript Is a Publishable Manuscript

The whole method in this guide comes down to one discipline: let styles carry the formatting and keep manual fixes out of the manuscript. Set the trim size and mirrored margins with page styles, build a small set of paragraph styles for chapters and body text, generate the table of contents from your headings, and export carefully for print or ebook. Each step is simple on its own, and together they produce a book that looks professional and behaves predictably when KDP processes it.

If you follow this workflow, you can format a book in LibreOffice Writer with confidence, whether it is your first book or your tenth. Save your setup as a template, keep the master manuscript clean, check a proof copy for print, and preview the ebook on a real device before you publish.