MOBI vs. EPUB vs. AZW3: Which E-book Format Is Best Today?
Last Updated: 24 July, 2026
TL;DR – If you’re publishing only for Kindle, AZW3 (Kindle Format 8) gives you the richest typography and fixed‑layout support while still being Amazon‑compatible. For anything beyond Kindle—especially if you need multimedia, interactivity, or cross‑platform reach—EPUB 3.2 (or the upcoming EPUB 4 draft) is the clear winner. MOBI is basically legacy baggage: it works on older Kindles but lacks modern features and is being phased out in favor of direct EPUB uploads.