AZW3 vs MOBI
Um comparativo detalhado de Kindle Format 8 e Mobipocket eBook — tamanho de arquivo, qualidade, compatibilidade e qual escolher de acordo com seu fluxo de trabalho.
Kindle Format 8
eBooksAZW3 (KF8) is Amazon's modern Kindle format with support for HTML5, CSS3, and advanced typography. It provides richer formatting than MOBI for Kindle devices and apps.
Sobre os arquivos AZW3Mobipocket eBook
eBooksMOBI is the Mobipocket eBook format historically used by Amazon Kindle devices. While Amazon has moved to newer formats, MOBI remains relevant for older Kindles and legacy eBook libraries.
Sobre os arquivos MOBIComparativo de vantagens
AZW3 Vantagens
- Rich HTML5/CSS3 rendering — proper typography, fixed layouts, embedded fonts.
- Native Kindle support — buy once, read on every Kindle you own.
- Efficient compression via Amazon's proprietary Huffdic scheme.
- Supports Whispersync for last-read position across devices.
MOBI Vantagens
- Universal Kindle support on every device ever released.
- Very small file sizes for text-heavy books.
- Mature tooling via Calibre and Amazon's KindleGen.
- Simple container structure — easy to parse.
Limitações
AZW3 Limitações
- Proprietary and DRM-locked to Amazon accounts.
- Requires Kindle hardware or the Kindle app to read "officially".
- No open specification — reverse-engineered by the Calibre project.
- Conversion to EPUB loses some Amazon-specific features (Whispersync, annotations).
- Ebook collectors prefer EPUB for archival because of DRM risk.
MOBI Limitações
- Deprecated by Amazon for new uploads since 2022.
- Poor support for rich typography (drop caps, ligatures, fixed layout).
- No embedded fonts in the base format.
- Proprietary container discouraged use outside Kindle.
- Effectively a legacy format — new books go to AZW3/EPUB.
Especificações técnicas
| Especificação | AZW3 | MOBI |
|---|---|---|
| MIME type | application/vnd.amazon.ebook | application/x-mobipocket-ebook |
| Extensions | .azw3, .kf8 | — |
| Container | Palm Database (PDB) variant | Palm Database (PDB) |
| Markup | HTML5 + CSS3 subset | Compressed HTML subset |
| DRM | Amazon FairPlay / Topaz | — |
| Extension | — | .mobi, .prc (PalmDOC variant) |
| Successor | — | .azw, .azw3 (Kindle-specific) |
Tamanhos típicos de arquivo
AZW3
- Typical novel (300 pages) 500 KB - 2 MB
- Illustrated non-fiction 5-20 MB
- Cookbook with color photos 20-80 MB
MOBI
- Text-only novel 200 KB - 1 MB
- Illustrated book 2-10 MB
Pronto para converter?
Converta entre AZW3 e MOBI online, grátis e sem instalar nada. Upload criptografado, exclusão automática em 60 minutos.
Perguntas frequentes
AZW3 (Kindle Format 8) is an ebook format designed for reading long-form text on dedicated e-readers, tablets, and ebook apps. It is part of the ebooks family and typically supports reflowable text, embedded images, chapter navigation, cover art, and metadata (title, author, ISBN) in a portable package.
AZW3 (Kindle formato 8) is an ebook formato designed para reading long-form text on dedicated e-readers, tablets, e ebook apps. It is part of the ebooks family e tipicamente suporta reflowable text, embedded images, chapter navigation, cover art, e metadata (title, author, ISBN) em um portable package.
Dedicated e-readers — Kindle, Kobo, Nook, Pocketbook — support the most common ebook formats. On phones, Apple Books, Google Play Books, Moon+ Reader and KOReader all handle AZW3. For desktop reading, Calibre is the universal ebook viewer and library manager. Convert to EPUB or PDF for maximum compatibility.
Dedicated e-readers — Kindle, Kobo, Nook, Pocketbook — support the most common ebook formatoos. On phones, Apple Books, Google reproduzir Books, Moon+ Reader e KOReader all handle AZW3. para desktop reading, Calibre is the universal ebook viewer e library manager. converter to EPUB ou PDF para máximo compatibilidade.
Upload your AZW3 to KaijuConverter and pick EPUB, MOBI, PDF, AZW3, or similar targets. Our Calibre-powered pipeline preserves chapter structure, embedded images, cover art, and metadata. Conversion takes seconds for typical novels; long technical books with many images may take a little longer.
EPUB is the open ebook standard — it plays on every e-reader except older Kindles and in every major ebook app. PDF is better for fixed-layout content (textbooks, coffee-table books) and printing. Pick EPUB when the ebook is reflowable text, PDF when the layout matters more than the reading experience.