EPUB is the format in which most ebooks travel. It is an open standard, supported by Apple Books, Kobo, Google Play Books, Nook, library platforms and, in effect, Kindle, which converts EPUB on upload. An EPUB is a small website in a zip file: HTML for the text, CSS for the style, images, a navigation document and a package file that ties them together. Because the file is open, anyone can open it and look at the code, and anyone can make mistakes in it. EPUB formatting is the craft of building that package properly.
EPUB Formatting · from $169
Professional EPUB formatting that opens cleanly on every reading device
EPUB formatting is the work of turning your manuscript into a reflowable ebook file with real chapter styles, a working contents page and metadata that retailers accept. Our epub formatting service builds each file by hand to the EPUB 3 standard, validates it and tests it on real devices. Choose a word count to see a fixed price for your own book in under a minute.
View Pricing
Most books are delivered within three to five working days.
- Hand-built EPUB 3 files
- Validated before delivery
- Fixed price and clear turnaround
Key facts
- $169Starting price for the EPUB, before extras
- 2 roundsOf revisions included in every EPUB order
- 2 to 3 daysFastest standard delivery for a short EPUB
Overview
What an EPUB actually involves
Most EPUB trouble is predictable. A file converted automatically from Word carries bloated markup, empty paragraphs and inline styles. A file made in a free tool may have broken navigation. A file that looks good in one reader fails in another because it uses a feature that the second does not support. EPUB formatting issues appear as missing chapters in the contents, text in the wrong font, images that overflow, odd gaps between paragraphs and validation errors that block upload. Fixing them means working in the structure and not on the surface.
Our EPUB formatting service builds the file by hand, or with careful tooling and then hand-checks it. We set up the package, write clean HTML, apply a minimal stylesheet, build a linked contents page and navigation, embed fonts only where they are justified, compress images, set metadata and validate. We test in Kindle Previewer and real apps. If you prefer to do it yourself, the sections below explain the common software options, the rules to follow and the mistakes to avoid.
We start every EPUB formatting job with an audit. For your EPUB, we open your file or manuscript, list what is already right, what is wrong and what needs a decision from you, and send that back before any work begins. The audit is why there are no surprises: you know the scope, the price and the schedule, and you know which of XHTML structure and CSS stylesheet is likely to need the most care.
Searches for free EPUB formatting usually lead to templates and converters, which can work for a simple text-only book. When your book has a linked contents, images or special layouts, a hand-built file passes validation more reliably and behaves the same on every reader.
Why it matters
Why an EPUB matters
EPUB formatting shapes the reading experience
Poor markup shows up as spacing errors, missing contents and broken styling on some devices but not others. Readers rarely name the cause, but they feel the difference between careful and careless EPUB formatting work.
The details carry the quality
Validation catches errors that retailers will otherwise reject at upload. Each detail in EPUB formatting has a tolerance, and a professional knows where it lies and how to check it. None of this is visible when it is done well, which is exactly why careful EPUB formatting work is easy to undervalue.
Doing it once, properly, saves time
A lean, readable stylesheet makes later edits quick and safe. Getting EPUB formatting right at the start also keeps later edits, reprints and new editions inexpensive. It is far easier to get EPUB formatting right while the book is still a working file than to repair it after publication.
Formatting for EPUB, built to the standard
Formatting for EPUB, built properly
EPUB formatting starts with a clean structure rather than a clever layout, because a reflowable file has to adapt to every screen size and every reader setting. We rebuild your manuscript with semantic headings, proper paragraph styles and a single stylesheet that behaves the same on a phone, a tablet and an e-ink reader.
If you need to know how to format an epub yourself, the short answer is that the structure matters more than the look: chapter titles as real headings, a navigation document that lists them, images with alternative text and a package file that names the book correctly. We do all of that for you and confirm the result with a validator before delivery.
Our epub3 formatting for authors includes the metadata retailers ask for, such as title, author, language, description and cover reference, so the file is ready for upload to Kindle, Kobo, Apple Books and Google Play without further work from you.
- Semantic chapter headings and a single clean stylesheet
- A linked contents page and a navigation document
- Metadata completed to retailer requirements
Choose the right build
The first decision in any EPUB
Build from manuscript
A new EPUB made from your finished manuscript. We choose this route when the book leans on xHTML structure, and we show a sample before the whole EPUB formatting job proceeds. We show a sample of each route where it helps, so you can choose from evidence rather than from a description for the EPUB.
Repair an existing EPUB
Cleaning and revalidating a file with errors. We choose this route when cSS stylesheet are central to how the book is used, and we explain the cost and schedule consequences before you commit. We show a sample of each route where it helps, so you can choose from evidence rather than from a description for the EPUB.
Specification
The EPUB specification we build to
These are the decisions we make on every EPUB job, and the reason for each one.
Element
How we build it
Why it matters
XHTML
One file per chapter, valid and semantic. We confirm the value with you before building, and record it in the specification for your EPUB formatting job.
Predictable on every reader. Getting this right early avoids rework once the EPUB formatting pages have been proofed.
CSS
Relative units and few rules. We apply it through a defined style or setting, so it holds across the whole EPUB formatting file.
Readers can override it. Readers and reviewers notice when it is wrong, even when they cannot say what is wrong with your EPUB.
Navigation
EPUB 3 nav plus NCX. We verify it again in the final proof, because it is easy to disturb during late edits on this EPUB project.
Works on old and new devices. On this EPUB job, platforms and printers check it automatically, and a failure delays the launch.
Package
Complete metadata and manifest. Where your platform sets a different rule, we follow the platform and tell you why for the EPUB.
Passes retailer checks. It also keeps later editions of the EPUB formatting work consistent with the first.
Files
A validated EPUB, the unpacked source and a validation report, named consistently and delivered with a short specification.
For your EPUB, a clear package prevents mix-ups between versions and speeds up any later change. Getting this right early avoids rework once the EPUB formatting pages have been proofed.
Checks
Preflight or validation run on every deliverable, with the report supplied on this EPUB project. We apply it through a defined style or setting, so it holds across the whole EPUB formatting file.
For your EPUB, evidence of a clean pass is what separates a checked file from a hopeful one. Readers and reviewers notice when it is wrong, even when they cannot say what is wrong with your EPUB.
See what it costs
See the price of your EPUB in a minute
See what professional EPUB formatting costs for your own book by choosing a word count below, with the delivery estimate and any extras included before you decide.
Build my priceProcess
How an EPUB project runs
Send
You send the files and tell us what you need from the EPUB formatting job, including where you plan to publish and any deadline. We confirm the scope and the price for the EPUB. You are never left guessing what comes next, because we confirm each stage of the EPUB formatting job in writing.
Day 1
Audit
On this EPUB job, we examine the file, list what is correct and what must change, and send a short note with any decisions we need from you. For a EPUB, if something unexpected turns up at this stage, we tell you at once and agree the fix before continuing.
Days 1 to 2
Plan
We agree the specification, including how we will treat XHTML structure and CSS stylesheet, and confirm the schedule. For a EPUB, this stage is where most questions arise, so we leave time for them in the schedule.
Day 2
Build
On this EPUB job, we carry out the work, applying defined styles and settings, and fixing faults at their source rather than covering them. You are never left guessing what comes next, because we confirm each stage of the EPUB formatting job in writing.
Days 3 to 7
Check
On this EPUB job, we validate, preview and review the result against the specification, and compare the text with your manuscript. For a EPUB, if something unexpected turns up at this stage, we tell you at once and agree the fix before continuing.
Days 8 to 9
Deliver
You receive the files, the specification and the change log, with support if a platform queries the file on this EPUB project. For a EPUB, this stage is where most questions arise, so we leave time for them in the schedule.
Day 10
Before and after
An EPUB before and after formatting
The same manuscript shown as a quick conversion and as a properly built EPUB. The text is identical, and only the second behaves as a professional ebook should.
123Before
- 1Indents made with tabs that shift between devices
- 2A contents page typed by hand with no links
- 3Images that overflow the screen on a phone
123After
- 1Indents controlled by a paragraph style that stays consistent
- 2A linked contents page that jumps to each chapter
- 3Images scaled to the screen with alternative text
- 3problems found in the first review
- 3fixes checked in the final review
- 1named specialist owning every fix
- Fixedprice confirmed in the calculator before you order
Cleaner reading
Paragraphs, headings and spacing look the same on every device.
Faster navigation
Readers can jump to any chapter from the contents page.
Fewer rejections
A validated file passes retailer checks the first time.
Pricing calculator
Build your EPUB price
EPUB is the file behind Apple Books, Kobo, Google Play and most libraries, and it has to be built properly to pass their checks. Pick your files and options below and the fixed price for a validated EPUB builds as you go.
Beyond our online limit? Let us quote it properly.
An EPUB above 150,000 words, or with more than 150 images, is priced individually so nothing is missed. Send us the details and we reply with a fixed price and a delivery date.
The price covers building, validating and device-testing the EPUB. Cover design, ISBN purchase, retailer fees and commissioned artwork are not included.
Price guide
EPUB Formatting cost at a glance
The table shows epub formatting cost by book length, with the base price, delivery time and the kind of book that fits each tier. The calculator adds extras to your EPUB for an exact total.
Word count
Base price
Standard delivery
Typical book
Very short text
$169
2-3 working days
Very short text
Short text
$209
3-4 working days
Short text
Compact text
$249
3-5 working days
Compact text
Short book
$319
4-6 working days
Short book
Standard length
$389
5-7 working days
Standard length
Full-length text
$459
5-8 working days
Full-length text
Long text
$529
6-9 working days
Long text
Large text
$599
7-10 working days
Large text
Longest online length
$669
8-11 working days
Longest online length
More than 150,000 words
Custom quote
Agreed with your quote
Quoted individually
Comparison
EPUB Formatting compared with the alternatives
What you compare
A quick EPUB formatting fix
Professional EPUB formatting
Approach
For your EPUB, a quick fix treats symptoms and leaves the cause in the file. That approach saves effort at the start and tends to cost more in repairs once the EPUB formatting job is live.
A professional EPUB formatting job finds and corrects the cause. We do this as standard on every EPUB formatting job, and the evidence comes with your files.
Consistency
With your EPUB, manual changes vary from page to page. For your EPUB, it leaves the cause in place, so the same fault tends to return when the text changes.
Defined styles apply identically everywhere. For a EPUB, it is built to be repeated, so later editions cost less and match the first.
Validation
For your EPUB, success is judged by eye on one screen. With your EPUB, it is hard to check, so faults are usually found by readers instead of by the author.
Success is judged by the platform's own checks and real devices with your EPUB. With your EPUB, it is checked by a person and by software before it reaches you, so problems are found early.
Documentation
For your EPUB, nothing is recorded, so the next edition starts again. That approach saves effort at the start and tends to cost more in repairs once the EPUB formatting job is live.
A specification and change log are supplied with your EPUB. We do this as standard on every EPUB formatting job, and the evidence comes with your files.
Risk
With your EPUB, a rejected upload costs days and may delay a launch. For your EPUB, it leaves the cause in place, so the same fault tends to return when the text changes.
With your EPUB, files are tested before they reach you, and fixes are covered by the guarantee.
Cost
Cheap at first, then repeated whenever something changes with your EPUB. With your EPUB, it is hard to check, so faults are usually found by readers instead of by the author.
For a EPUB, a fixed price and a reusable result. With your EPUB, it is checked by a person and by software before it reaches you, so problems are found early.
Portfolio
EPUB formatting portfolio
Finished examples of EPUB Formatting work from our portfolio, each one built for a real book.
Fiction EPUB
A finished Fiction EPUB example from our EPUB Formatting work.
Nonfiction EPUB
A finished Nonfiction EPUB example from our EPUB Formatting work.
Memoir EPUB
A finished Memoir EPUB example from our EPUB Formatting work.
Business EPUB
A finished Business EPUB example from our EPUB Formatting work.
Educational EPUB
A finished Educational EPUB example from our EPUB Formatting work.
Poetry EPUB
A finished Poetry EPUB example from our EPUB Formatting work.
Our standard
The standard we hold every EPUB to
Fix causes, not symptoms
Our EPUB formatting work corrects the underlying structure, so the same problem does not return when the text changes. It is a standard we hold on every EPUB formatting job, whatever the price of the package or the length of the book.
Evidence over assurance
On this EPUB job, we supply the validation or preflight report with your files, so a clean result is something you can see. You can check it for yourself, because the evidence comes with your files on this EPUB project. For your EPUB, holding to it costs us time, and it saves you the cost of repairs later.
Plain communication
With your EPUB, we explain what we found and what we did in plain language, and we tell you honestly when something is outside what the file can support. For your EPUB, holding to it costs us time, and it saves you the cost of repairs later.
Checklist
The pre-delivery checklist for an EPUB
Every item below is verified on your EPUB before it leaves our desk.
- Audit completed and agreed with you
- XHTML structure checked and corrected
- CSS stylesheet checked and corrected
- Navigation files checked and corrected
- Package and metadata checked and corrected
- Validation or preflight run with the report supplied
- Previewer and device checks completed
- Text compared with the approved manuscript
- Specification and change log delivered
How we think
How we think about your EPUB
Structure first
In EPUB formatting, XHTML structure and CSS stylesheet are built into the file, not painted on top. We treat structure as the foundation and appearance as the finish, because structure is what survives edits and platform changes in this EPUB order.
Checked, not hoped
For a EPUB, a file is not finished because it looks right on our screen. On this EPUB job, it is finished when the validator, the preflight and real devices agree, and when we can show you the evidence. It is the principle behind most of what we do on EPUB formatting, and the reason we prefer to explain our choices rather than hide them.
Your files stay yours
We deliver source files and a specification, and we never lock your EPUB formatting work inside a proprietary format. If you hire someone else later, they can pick up where we stopped on this EPUB project. It is the principle behind most of what we do on EPUB formatting, and the reason we prefer to explain our choices rather than hide them.
Client reviews
What authors say about our EPUB formatting
Verified reviews from authors who published with files we built.
The reflowable EPUB looks perfect on every device I tested — Kindle, Apple Books, and Kobo. The clickable table of contents and chapter navigation work exactly as they should.
Converting my nonfiction manuscript to EPUB while preserving the heading structure, footnotes, and internal links was no small task. Every element survived the conversion perfectly.
I had a previous EPUB that displayed incorrectly on several devices. Book Formatting Experts rebuilt it from scratch. The new version renders beautifully across every reader app I tested.
A fixed-layout EPUB for a cookbook is genuinely complex. The recipe layouts, ingredient lists, and photography all needed to remain pixel-perfect. The result looks as good as the print version on every device.
The EPUB renders perfectly on my Kindle, Apple Books, and Kobo. The clickable table of contents works exactly as it should. Clean, standards-compliant, and ready to distribute everywhere.
Academic EPUB with complex equations and references. One formula needed manual correction in revisions but the overall quality was exactly right. The file validates without errors on all platforms.
My business EPUB had tables and callout boxes that needed to be handled carefully. Everything was converted cleanly without losing any structural information. The file passed Amazon's validator on the first check.
My EPUB was rejected twice by Apple Books before I found Book Formatting Experts. They identified the metadata errors, rebuilt the file properly, and the new version passed immediately. Wish I had contacted them first.
My fantasy EPUB had complex nested structures with chapter epigraphs and world-building inserts. The EPUB handles every level cleanly and reads beautifully on Kindle and Apple Books.
The interactive elements in my EPUB — internal links, chapter navigation, and resource appendix — all work perfectly. My readers have specifically mentioned how easy the ebook is to navigate.
Good eBook formatting work. The tables converted cleanly and the navigation works well. One heading level needed a style adjustment but it was corrected quickly. The file performs well on all platforms.
The devotional layout needed daily readings, scripture references, and reflection prompts to work together without feeling cluttered. The specialist understood the format immediately and the result serves the purpose perfectly.
My YA book needed a layout that felt contemporary without being gimmicky. The chapter openers, font choices, and spacing all work for the target age group. My teen readers said it felt like a real published novel.
My historical novel had period-appropriate chapter epigraphs and an author's note section. Every element was formatted with understanding of the genre's conventions. My literary agent commented on the professional quality.
Really solid work. The formatting was clean and professional. My only note was turnaround took a day longer than expected, but the final file was exactly right and uploaded without any issues.
Fantasy books need careful layout to handle maps, epigraphs, and chapter artwork. Every element was handled with real understanding of the genre. The final interior is exactly what a fantasy reader expects.
My world-building sections, map pages, and chapter epigraphs were all handled with genuine understanding of the genre. The interior feels as immersive as the story itself. My readers noticed immediately.
My thriller needed a fast, clean layout with short chapters that kept the pacing tight on the page. The formatting reinforced the reading rhythm I had built into the manuscript. Exactly right.
FAQ
EPUB Formatting: questions answered
These are the questions authors ask most about EPUB formatting, including tools, issues and cost. If your question about the EPUB is missing, request a quote and a specialist will reply.
What is EPUB formatting software?
It is software such as Sigil, Calibre, Vellum, InDesign and Atticus that builds or edits EPUB files. For EPUB formatting, we check the result against the platform's own rules before you see it.
What are common EPUB formatting issues?
Broken navigation, bloated markup, overflowing images and validation errors. We keep a record of what we changed so that you can review the work with your EPUB.
How do I format an EPUB for Kindle?
Build a valid EPUB and upload it to KDP, which converts it. For a EPUB, the calculator on this page shows the fixed price for each package before you commit.
What is an EPUB formatting tool?
Any program that creates or edits EPUB files. With your EPUB, if you are unsure, send the file and we will tell you what the job involves.
What are Kindle EPUB formatting issues?
Differences in CSS support and image handling that can break a layout. With your EPUB, revision rounds are included, so the first delivery does not have to be perfect.
Can I format an EPUB for free?
Yes, with free tools such as Sigil and Calibre, though quality depends on skill. For EPUB formatting, we check the result against the platform's own rules before you see it.
What is the best EPUB formatting software?
It depends on your skills. Sigil gives control, and others give ease. We keep a record of what we changed so that you can review the work with your EPUB.
What is formatting for EPUB?
It is the structure, styles and metadata that make an EPUB display well. For a EPUB, the calculator on this page shows the fixed price for each package before you commit.
Do you offer an EPUB formatting service?
Yes. We build and repair EPUBs. With your EPUB, if you are unsure, send the file and we will tell you what the job involves.
How much does EPUB formatting cost?
With your EPUB, the calculator on this page shows a fixed price for each package. With your EPUB, revision rounds are included, so the first delivery does not have to be perfect.
Do you validate?
Yes. We run EPUBCheck. For EPUB formatting, we check the result against the platform's own rules before you see it.
How long does it take?
Most EPUBs take about six days. We keep a record of what we changed so that you can review the work with your EPUB.
Do you use EPUB formatting software?
We hand-code EPUBs and use tools such as Sigil and EPUBCheck. Software helps, but structure still has to be decided by a person. For a EPUB, the calculator on this page shows the fixed price for each package before you commit.
Can you fix an EPUB that fails validation?
Yes. We find the cause of each error, correct it at the source and revalidate. With your EPUB, if you are unsure, send the file and we will tell you what the job involves.
Can you format an EPUB for Kindle?
Yes. Amazon accepts EPUB, and we test it in Kindle Previewer. With your EPUB, revision rounds are included, so the first delivery does not have to be perfect.
Do you offer EPUB formatting for Kindle?
Yes. We build a valid EPUB that KDP accepts and converts, and we test the result in Kindle Previewer.
What is EPUB3 formatting for authors?
EPUB3 formatting for authors is the use of the current EPUB standard, with HTML5 markup and a navigation document, which all major stores accept.
How do I format an EPUB?
To format an EPUB, clean the text, apply semantic structure, write a small stylesheet, build navigation, set metadata and validate with EPUBCheck.
Do you handle EPUB formatting for Kobo and Apple Books?
Yes. We check the EPUB against both stores' rules and test it in their apps.
Can you do EPUB file creation from Word?
Yes. We turn a Word manuscript into a clean EPUB file, with styles and navigation built properly.
Is professional EPUB formatting worth it?
For most books, yes. Professional EPUB formatting prevents rejections and reader complaints, and it gives you a file that is easy to update.
How much does professional EPUB formatting cost?
Epub formatting cost starts at $169 for a short book and rises to $669 for the longest length priced online. Professional epub formatting is quoted by word count, and the calculator adds images and extras so you see an exact total.
How long does EPUB formatting take?
Most books are formatted within three to five working days, depending on length and the number of images. Priority and Express options shorten that schedule, and the calculator shows an estimate for your book before you pay.
What is the difference between the spine and the manifest?
The manifest is the inventory and the spine is the itinerary. The manifest declares every resource the package contains, including images, fonts, the stylesheet and the navigation document, each with its media type. The spine lists only the content documents, in the order a reader moves through them. A file can be in the manifest without being in the spine, which is correct for an image. A file in the spine that is missing from the manifest is a fatal validation error.
Which EPUBCheck errors are fatal, and which are just warnings?
Fatal errors stop the file being a valid EPUB and every ingestion pipeline will refuse it: a manifest that disagrees with the archive, content documents that are not well formed, a missing or malformed container, a remote resource where none is permitted. Warnings are advisory and some are safe to leave, such as certain notices about deprecated but functional constructs. The dishonest move is to ship warnings without reading them. We deliver at zero errors and we explain in writing any warning we have chosen to leave in place.
Which CSS properties are safe to use across reading systems?
The reliable core is smaller than most designers expect: relative font sizing, line height, margins and padding in em units, text alignment, text indent, basic font family with a fallback stack, page-break-before and after, and simple percentage widths on images. Beyond that, support fragments quickly. Multi-column layouts, advanced selectors, custom properties, floats around images and anything involving precise positioning behave differently on every engine. We use what is supported, declare fallbacks for what is not, and test the result rather than assuming.
Can I embed commercial fonts in an EPUB, and what does the licence have to say?
You can only embed a font whose licence explicitly permits embedding in an electronic publication. Many desktop licences do not, and a print licence almost never does. Shipping a font without that permission exposes you to a takedown or worse. We audit each typeface, and where the licence allows it we subset the font to the glyphs your book actually uses, declare it in the manifest, and obfuscate it where the foundry requires that. Where it does not allow it, we propose a face that does and looks close.
What are media overlays, and do I need them?
Media overlays are a part of the EPUB 3 specification that synchronises recorded narration to the text using SMIL, so a supporting reading system highlights each phrase as it is spoken. They are genuinely useful for children's books, language learning and accessibility, and they are supported by a minority of reading systems. If your audience is on Apple Books or on an accessibility platform, they are worth building. If you are chiefly selling prose fiction on Amazon, they will be quietly ignored and the file will simply be larger.
What is the OPF, and can I edit it myself?
The OPF is the package document, and yes, you can edit it, which is exactly why we ship you the unpacked source. It is an XML file and it is readable. Change the title, add a contributor, correct the language attribute. What you must not do is edit it, rezip the archive carelessly and skip revalidation, because the mimetype file has to be stored first and uncompressed, and a naive zip will break that and produce a file no reading system will open.
How do you handle MathML and technical notation in EPUB 3?
MathML is part of the EPUB 3 specification and support across reading systems is uneven. We mark equations up as MathML, so the notation is real, selectable and readable by assistive technology, and we supply a rendered image fallback for the systems that will not display it. The alternative that many people choose, pasting equations in as pictures, produces something that looks acceptable and is unsearchable, unscalable, invisible to a screen reader and unreadable at a large type size.
Why does EPUBCheck complain about my remote resources?
Because an EPUB is meant to be self-contained. A book that fetches its images or fonts from a URL will render on the machine that built it, where the network is available, and then fail for a reader on a plane, on an e-ink device with the radio off, or after the hosting server is retired. The specification permits remote resources only in narrow circumstances. In practice we package everything the book needs inside the archive, which is the only way the file is durable.
Ready when you are
Ready to start your EPUB?
A well-built EPUB is the quickest way to make your book look professional on every device. See your EPUB price in a minute, or send a larger project and we will quote it.
- Fixed price shown before you pay
- Revision rounds included
- One named specialist, brief to upload