EPUB Converter

How to Convert EPUB to Any Format

1. Upload Your EPUB File: Drag and drop your .epub into the drop zone or click "+ Add Files" (you can also pull files in from Google Drive or Dropbox). Batch is supported — drop in several EPUBs and download them together as a ZIP.
2. Pick an Output Format: Choose the target from the format selector — MOBI for older Kindles or PDF for fixed-layout printing and sharing. MOBI is preselected by default; switch it to PDF (or another available ebook target) before converting.
3. Set the Quality or Page Preset (Optional): For PDF output, the Compression Type dropdown under Advanced Options offers Screen (Best), Ebook, Default, Prepress, and Printer presets, and the page lays out to A4 portrait — pick Printer or Prepress for a print-ready file, Ebook or Screen to keep the PDF small for email.
4. Convert and Download: Click Convert. Files are uploaded over an encrypted connection, processed on our servers, and deleted automatically after a few hours — no sign-up, no email, no watermark.

Popular EPUB Conversions

• EPUB to MOBI — load a book onto an older Kindle or Kindle app over USB
• EPUB to PDF — a fixed page layout you can print, annotate, or email exactly as designed

The two-way "convert to EPUB" and "convert from EPUB" link lists below cover the rest of the supported pairs, including building an EPUB from a PDF, a Word document, or a MOBI file.

Why Convert an EPUB File?

EPUB (short for Electronic Publication) is the open ebook standard. It was created by the International Digital Publishing Forum and, after the IDPF merged into the World Wide Web Consortium in 2017, it is now maintained by the W3C — the current version, EPUB 3.3, became the first W3C Recommendation of the EPUB series on 25 May 2023. Under the hood, an EPUB is a ZIP package of XHTML/HTML5 content, CSS stylesheets, images, fonts, and metadata, which is why its text is reflowable: the reading app re-flows the words to fit any screen, and the reader controls font size, margins, and theme.

That reflowable design is EPUB's strength and the reason most e-readers — Apple Books, Google Play Books, Kobo, and Nook — open it natively. People convert away from it for a few concrete reasons:

• Reading on an older Kindle (MOBI): Amazon's Send-to-Kindle now accepts EPUB directly (added August 2022), but older Kindle hardware and offline workflows still rely on the legacy MOBI format, which you sideload by USB into the Kindle's Documents folder.
• Fixed-layout printing and sharing (PDF): A PDF locks the page exactly as designed, so it prints, annotates, and emails the same on every device. Going EPUB to PDF trades reflow for a fixed page — the right call for a worksheet, a form, or anything you need to look identical to everyone.
• Universal viewing without an ebook app: Not every recipient has an EPUB reader installed. PDF opens in any browser and on any phone with no extra app, which makes it the safest format to attach to an email.

EPUB vs. MOBI, PDF, and AZW3 at a Glance

Frequently Asked Questions

What apps and devices open an EPUB file?

EPUB is the most widely supported ebook format. It opens natively in Apple Books on iPhone, iPad, and Mac, in Google Play Books on Android and the web, and on Kobo and Nook e-readers. On desktop, free apps like Calibre, Thorium Reader, and Adobe Digital Editions read it, and modern Kindles accept EPUB through Amazon's Send-to-Kindle service. Because the format is an open W3C standard rather than a single vendor's product, support is broad and growing rather than tied to one app.

Will converting EPUB to PDF lose the reflowable text?

Yes — that is the fundamental trade-off, and it is by design. EPUB reflows text to fit any screen, so the reader controls font size and margins. PDF freezes the content onto fixed pages at a set size (A4 portrait by default here), so what you see is locked exactly as laid out. That is ideal when you need every copy to look identical for printing or annotation, but it means a PDF on a phone often requires pinch-zoom and horizontal scrolling that the original EPUB avoided. If on-screen reading comfort matters more than a fixed layout, keep the EPUB or convert to MOBI instead.

Can I read a converted MOBI on a current Kindle?

Yes, but with a caveat. MOBI is Amazon's legacy format and still opens on Kindle devices and the Kindle app when you sideload it — connect the Kindle by USB and copy the .mobi into the Documents folder, or use a tool like Calibre. What changed is Send-to-Kindle: Amazon stopped accepting MOBI through that wireless service (fully phased out by December 2023) in favor of EPUB and its own AZW3/KFX formats. So for a brand-new Kindle, sending the EPUB directly is often easier; MOBI is most useful for older hardware and offline transfers.

Does the conversion keep my chapters, images, and table of contents?

Conversion preserves the document structure — chapter breaks, the navigation table of contents, embedded images, and metadata like title and author carry across to MOBI and PDF. Reflowable formats (EPUB to MOBI) keep the linked, clickable table of contents intact. In PDF the table of contents becomes a fixed page reference rather than a live reflow, but the chapter ordering and images remain. Heavily styled CSS or custom fonts can render slightly differently in the target format, since each reader interprets layout its own way.

What is the best format to convert an EPUB to for a Kindle?

For a current Kindle, you usually do not need to convert at all — email the EPUB to your Send-to-Kindle address and Amazon handles it. Convert to MOBI when you are working with an older Kindle that predates EPUB support, or when you want a file you can copy over USB without an internet connection. AZW3 is Amazon's own modern format (KF8, built on HTML5 and CSS3 to rival EPUB 3), but it is proprietary to the Kindle ecosystem, so EPUB and MOBI remain the portable choices.

Is my EPUB private when I convert it here?

Yes. Your file is uploaded over an encrypted (TLS) connection, converted on our servers, and deleted automatically after a few hours — no sign-up, no email, no watermark, and your book is never shared or made public. In our testing, a typical novel-length EPUB of roughly 1 MB (a few hundred pages of text with a cover image) converts to MOBI or PDF in a few seconds, and you can download single files directly or grab a batch as one ZIP.