How to convert eBook to PDF — EPUB, MOBI, KFX

The eBook formats you actually see

Step by step — EPUB to PDF (no-DRM case)

1. Verify the EPUB is unencrypted. Try opening it in any EPUB reader (Apple Books, Calibre, Foliate). If it opens and shows text, it is unencrypted. If it asks for a password or shows DRM-error, you need legitimate access — see FAQ on DRM.
2. Open ScoutMyTool eBook to PDF at scoutmytool.com/pdf/ebook-to-pdf and drop the EPUB. The tool runs in your browser — no upload.
3. Pick output page size and font size. Letter / A4 for screen reading, 6"×9" for paperback printing, 5"×8" for mass-market. Font size 11–12pt for readable on-screen, 10–11pt for printed.
4. Enable bookmark / table-of-contents preservation. The converter walks the EPUB navigation document and adds matching bookmarks to the output PDF. For long books, this is what makes the result usable.
5. Convert and verify. Download the PDF. Open it in Acrobat Reader or Preview. Check the bookmarks panel for chapter entries. Spot-check three pages for font and layout. If anything is off, adjust settings and re-convert.

Related reading

• PDF to text: extract pure text content from the converted PDF.
• PDF to Markdown: alternative export for note-taking workflows.
• Markdown to PDF: the reverse — author in Markdown, deliver as PDF.
• PDF tools for students: for academic eBook reading workflows.
• Fix PDF margins: clean up over-large margins on converted output.
• Compress PDF: shrink the output PDF for storage or share.
• All ScoutMyTool PDF tools: the broader toolkit.

FAQ

Why does my converted PDF have weird page breaks and inconsistent fonts?

EPUB, MOBI, and AZW3 are reflowable formats — they have no concept of fixed page boundaries because the reader (a Kindle, a Kobo, your phone) decides where each page breaks based on screen size and font preference. When you convert reflowable content to PDF, the converter has to pick page break locations and font sizes. Most converters default to ~10pt at A5 page size, which is often too small. Calibre (the common open-source converter) and most online converters expose page size and font size options. Set the page size you actually want (Letter or A4 for reading on screen; mass-market paperback size for printing), the font size you want (12pt is comfortable for screen, 11pt for print), and re-convert.

Can I convert a DRM-protected Kindle book to PDF?

Only if you have legitimate access to the unencrypted source. DRM-protection circumvention is regulated by the Digital Millennium Copyright Act (DMCA) in the US and similar laws elsewhere; bypassing DRM on a book you do not own a license to is generally not legal. For books you own through the Kindle Store, options that are usually within terms of service: Amazon's "Print Replica" downloads (a subset of titles available as PDF directly), Kindle Cloud Reader's "save as PDF" via browser print for personal-use excerpts, or the Send to Kindle service for documents you own. For non-Amazon ePub purchases with no DRM, conversion is straightforward; for Amazon AZW3/KFX with DRM, the only safe path is the original reader or licensed Amazon-supplied formats.

My EPUB has chapters but the converted PDF lost the table of contents — why?

EPUB stores the table of contents as a separate navigation document (NCX or HTML nav) referencing chapter file IDs. When converting to PDF, the converter has to read the EPUB nav, walk each chapter, and add corresponding bookmark entries to the output PDF. Cheap converters skip the nav step entirely. The fix: use Calibre (free, open-source) or a quality online converter that preserves bookmarks, and confirm the "Insert table of contents" / "Add bookmarks" option is enabled. After conversion, open the PDF and check the Bookmarks panel — entries should match the EPUB's chapter list. For long books, bookmark preservation is essential for usability.

How do I convert a comic book CBZ or CBR to PDF?

CBZ is just a ZIP archive of image files (one per page); CBR is a RAR archive. Extract the images, sort them by filename (they should sort to reading order if the archive was made correctly), then wrap them into a PDF using a "images to PDF" tool. Each comic page becomes one PDF page at the original image dimensions. ScoutMyTool's JPG to PDF tool handles this directly: extract the CBZ, drag the images in, choose page size "fit to image" so dimensions match, export. For CBR specifically, rename to .zip if the comic was actually zipped (a common mislabel); otherwise use a RAR extractor first. The resulting PDF is fixed-layout and prints page-for-page.

I want a PDF I can print double-sided as a paperback. What conversion settings?

Three settings matter. Page size: choose 6"×9" trade paperback (15.24×22.86 cm) or 5"×8" mass-market paperback depending on target. Margins: 0.75" outer, 1" inner (gutter, for binding allowance). Font size: 10–11pt for novels, 12pt for non-fiction. After conversion, verify the page break logic — most converters re-flow text by character count, which can break mid-paragraph awkwardly. Some converters offer "widow and orphan control" (avoid stranding the last line of a paragraph at the top of a page, or the first line at the bottom); enable it for print-quality output. Print a sample of 4 pages duplexed to confirm before printing the full book.

How do I preserve the original fonts in the EPUB during conversion?

EPUB embeds fonts in a fonts/ folder inside the EPUB archive. Quality converters extract these fonts and embed them in the output PDF, preserving the publisher's typography. Cheap converters substitute system fonts (Times New Roman or Arial), losing the publisher-intended look. Calibre preserves embedded fonts by default. Adobe Acrobat's "Save as Other → PDF" handles EPUB import with font preservation. After conversion, check the resulting PDF's embedded-fonts list (Acrobat: File → Properties → Fonts; Preview: Tools → Show Inspector → Fonts) — the EPUB's embedded fonts should appear in the list as "Embedded subset".

Can I convert an EPUB to PDF online without uploading the file?

Yes. ScoutMyTool's EPUB-to-PDF tool runs entirely in your browser tab using JavaScript (epub.js + pdf-lib). Your book never uploads to any server. The conversion is fast for small books (under 200 pages) and takes 20–60 seconds for longer ones. For books over ~1000 pages, the browser tab can run out of memory on weaker laptops; in that case, split the EPUB into volumes first or use a desktop converter (Calibre). For DRM-protected books, no online converter can help — the file is encrypted and the converter cannot read it.

Citations

1. IDPF/W3C — EPUB 3.3 specification — the open eBook standard.
2. Amazon Kindle Direct Publishing — file format documentation for MOBI, AZW3, KFX.
3. Digital Millennium Copyright Act, 17 U.S.C. § 1201 — anti-circumvention provisions.
4. ISO 32000-1:2008 — "Document management — Portable document format" — the target PDF specification.
5. Calibre Project documentation — open-source eBook management and conversion tool.