49 articles in this topic. — Page 5 of 7
FB2 and EPUB are both open, XML-based ebook formats — but they come from different worlds and suit different jobs. FB2 (FictionBook) is popular in Russian-language archives and leans on strict structure; EPUB is the global open standard built on HTML and CSS. If you are choosing which to save or convert, here is the practical comparison.
Most conversion problems are decided before you click convert. A few minutes of preparation — fixing the source file, picking the right target, and avoiding common mistakes — saves a failed job and a broken output. Use this checklist every time you convert an ebook.
EPUB is the open standard almost every non-Kindle reader understands, but a bare .epub file does not open by double-clicking it. You need the right app for the device you are on. Here is how to read EPUB on iPhone, iPad, Android, Windows, and Mac — and when you should convert it first.
EPUB 2 and EPUB 3 are the two versions of the open ebook standard. Most readers handle both without you noticing, but they are not the same underneath. EPUB 3 added multimedia, better accessibility, and richer navigation. Here is what changed and whether it matters for your books.
A scanned PDF is just a pile of page images — there is no real text inside, so it cannot reflow or be searched. To turn it into a proper EPUB, you need OCR (optical character recognition) to read the words out of the images first. Here is how the process works and what to expect.
You do not need to pay to read ebooks well. Every major platform has a free, capable reader app, and the right one depends on your device and your format. Here is the practical shortlist of free ebook reader apps for 2026, organized by where you read.
Kobo's own format is already EPUB under the hood (its tuned variant is called KEPUB), so "converting a Kobo book to EPUB" is often simpler than it sounds — or impossible, if the book is store-DRMed. This guide explains both cases and what you can actually do.
Bought an EPUB your Kindle won't open? Convert EPUB to AZW3 free — no sign-up, no upload to Amazon. This guide shows how to get a native Kindle format with full typography control, how AZW3 beats the old MOBI, and when to use it instead of Send to Kindle.