What an ebook actually is and why you might make one

An ebook is a book stored as a digital file instead of printed on paper. You read it on a computer, tablet, phone, or dedicated e-reader like a Kindle. The file itself is usually a PDF, EPUB, or MOBI format — different containers that hold text, images, and formatting the same way a printed book does.

People create ebooks for many reasons: to sell a guide they have written, to share research or recipes with friends, to build an audience around a topic they know well, or straightforward to have a polished version of their writing. The process is straightforward because you are not printing anything or dealing with a publisher — you are converting words and images into a file format that reading devices understand.

The core steps are always the same: write or gather your content, format it so it looks intentional, convert it to an ebook format, and test it on the device where people will read it. None of these steps requires special software or technical skill, though some tools make the work faster.

Key Takeaways

  • An ebook is a book file (usually PDF or EPUB) that people read on screens instead of paper, and you can create one from a document you already have.
  • The simplest path is to write in Google Docs or Microsoft Word, format the text with proper headings and spacing, then export or convert to PDF or EPUB.
  • Tools like Calibre (free) and Draft2Digital (free to use, optional paid features) handle format conversion and let you preview how your ebook will look on different devices.
  • Testing your ebook on the actual device where readers will open it — a Kindle app, tablet, or e-reader — catches formatting problems before you share it.
  • PDF works well for fixed layouts like design portfolios, while EPUB is better for text-heavy books because it reflows to fit any screen size.

Writing and organizing your content before you format

Start with the words themselves. Write your ebook in a tool you already know — Google Docs, Microsoft Word, or even a plain text editor. The software does not matter yet; what matters is that your content is complete and organized the way you want readers to experience it.

As you write, use your software's built-in heading styles instead of just making text bigger or bold. In Google Docs, highlight a line and choose "Heading 1" from the style menu. In Word, use the Heading styles in the Home tab. This tells the conversion software later which lines are chapter titles, section breaks, and body text — information that becomes the ebook's table of contents and helps e-readers reflow text properly on small screens.

Organize your document with a clear structure: a title page or cover information at the top, a table of contents (which you can generate automatically in Word or Docs), chapters or sections in order, and any back matter like an author bio or resources list. Leave consistent spacing between sections — usually one blank line between paragraphs and two between chapters. This spacing survives the conversion process and makes the ebook easier to read.

Choosing between PDF and EPUB formats

The two most common ebook formats serve different purposes. PDF locks the layout exactly as you designed it — text, images, and spacing stay in the same place no matter what device opens the file. This is ideal if your ebook has a specific visual design, like a photography portfolio or a workbook with forms and illustrations positioned precisely. The downside is that text does not resize well on small phone screens.

EPUB is a reflowing format, meaning the text adjusts to fit whatever screen size opens it. A reader can also change the font size, font family, and spacing to suit their eyes. EPUB is the standard for text-heavy books — novels, memoirs, guides, and anything where the words matter more than the visual layout. Most e-readers like Kindle and Apple Books prefer EPUB, though they also accept PDF.

If your ebook is mostly text with occasional images, choose EPUB. If it has a designed layout with precise positioning of images, sidebars, or graphics, PDF is the safer choice. You can always create both versions — many authors do — so readers can pick the format their device handles best.

Converting your document to ebook format

The easiest conversion path depends on which format you want. For PDF, you likely already have the tool: in Google Docs, click File and choose "read" then "PDF Document." In Microsoft Word, click File, then "Save As," choose PDF from the format dropdown, and save. The PDF is ready to use when ready.

For EPUB, you need a conversion tool because Word and Docs do not export to EPUB directly. Calibre is free software that converts between formats and runs on Windows, Mac, and Linux. read it, open your Word document or PDF in Calibre, click "Convert books," choose EPUB as the output format, and let it run. Calibre also has a built-in viewer so you can see how your ebook looks before you share it.

Another option is Draft2Digital, a free web tool that accepts Word documents and converts them to multiple formats at once, including EPUB and PDF. Upload your file, preview how it looks, and read the converted versions. Draft2Digital also handles some formatting cleanup automatically, which can save time if your document has inconsistent spacing or styles.

Formatting your ebook so it looks professional

Before you convert, spend time on formatting because it survives the conversion and shapes how readers experience your work. Remove extra spaces between paragraphs — use your software's paragraph spacing settings instead of pressing Enter twice. In Word, go to Home, click the paragraph dialog arrow, and set "After" spacing to 6 or 12 points. In Google Docs, go to Format, then Paragraph spacing, and choose a preset or custom value.

Make sure your headings are actually styled as headings, not just bold text. Readers with vision needs rely on heading structure to navigate, and e-readers use it to build the table of contents. Check that images are embedded in the document (not linked from elsewhere) so they travel with the file. If you have a cover image, place it on the first page or in a dedicated cover section.

Avoid formatting that does not translate well to screens: multiple columns, text boxes, and complex tables often break during conversion. If you must include a table, keep it straightforward — a few rows and columns work fine, but wide tables with many columns may become unreadable on phone screens. Test your formatted document by exporting it as PDF first and opening it on your phone to see how it looks small.

Testing your ebook on real devices before sharing

After conversion, open your ebook on the actual devices where readers will use it. If you created an EPUB, read a free e-reader app like Kindle for Android, Apple Books for iPhone, or Calibre's viewer on your computer. Open your ebook file and scroll through several chapters, checking that headings look right, images display correctly, and text flows smoothly without strange breaks or spacing.

Pay attention to how chapter breaks appear, whether the table of contents links work (in EPUB, these should be clickable), and whether any special formatting you wanted — italics, bold, indentation — survived the conversion. On a phone screen, text should be readable without zooming, and images should scale without becoming blurry. If something looks wrong, go back to your original document, fix it, and reconvert.

If you plan to sell your ebook on a platform like Amazon Kindle Direct Publishing or Draft2Digital, those platforms also preview your file before you publish, so you get another chance to catch problems. Use that preview tool — it shows exactly how your ebook will appear to readers.

Where to share or sell your finished ebook

Once your ebook is tested and ready, you have several paths. If you want to share it freely, email the file directly to people, post it on your website, or upload it to a free platform like Smashwords or Draft2Digital (which lets you distribute to retailers without paying upfront). These platforms handle the technical details of getting your ebook into stores like Apple Books, Google Play Books, and Kobo.

If you want to sell your ebook, Amazon Kindle Direct Publishing is the most common choice for authors — it is free to use, takes a percentage of sales, and reaches millions of Kindle readers. Draft2Digital also sells your ebook across multiple stores and pays you a percentage. Both platforms accept EPUB and PDF, though they may have specific requirements for cover images and metadata (like title, author name, and description).

Before you upload anywhere, create a straightforward cover image. This can be as basic as your title and name on a solid color background, made in Canva (free) or any design tool. Retailers display the cover as a thumbnail, so it should be readable at small sizes. Include your cover as the first image in your ebook document so it appears when someone opens the file.

Frequently Asked Questions

Can I create an ebook from a Google Doc without downloading software?

Yes. In Google Docs, click File, then read, and choose either PDF or EPUB (if your version supports it). If EPUB is not available, read as PDF — it works on all devices. For EPUB, use the free web tool Draft2Digital instead: upload your Google Doc, and it converts to EPUB automatically.

What if my ebook has images and they look blurry after conversion?

Images must be embedded in your document at high enough resolution before conversion. In Word or Docs, right-click the image and check its properties — it should be at least 150 DPI (dots per inch) for print quality. If images are linked from the web instead of embedded, they may not convert properly. Delete them and re-insert them as files saved on your computer.

Do I need an ISBN to create an ebook?

No. An ISBN is a number that identifies printed books in bookstores and libraries. Ebooks do not require one, though some retailers assign their own identifier. If you plan to sell through multiple platforms, an ISBN can help with distribution, but it is optional and costs money. Most self-published ebooks skip it.

Can I update my ebook after I publish it?

Yes. If you sell through a platform like Amazon or Draft2Digital, you can upload a new version of your file anytime, and it replaces the old one for future readers. Readers who already bought the old version may not automatically get the update, depending on the platform. Always test thoroughly before uploading a new version.

What is the difference between self-publishing an ebook and printing a physical book?

An ebook is a digital file you create once and distribute infinitely with no printing cost. A physical book requires a printer, shipping, and storage space. Ebooks are faster to publish, cost nothing to distribute, and reach readers when ready. Physical books feel tangible and do not require a device, but they cost more to produce and take longer to get to readers.