Whether you are a self-published author preparing your manuscript for Kindle and Apple Books, a student converting PDF textbooks to EPUB for your e-reader, or a book collector archiving your library — GoConvertFile handles every ebook conversion while preserving formatting, images, and metadata. No registration required.
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EPUB is the open, industry-standard ebook format used by almost every reader except older Kindles. It reflows text beautifully and supports rich layout.
MOBI (and its AZW descendant) is the format older Amazon Kindle devices read. Converting EPUB to MOBI lets you sideload a book onto a classic Kindle for reading on the go.
Yes, GoConvertFile offers free conversion of EPUB to MOBI for files up to 100MB.
MOBI is the native format for older Kindle devices. Newer Kindles also support EPUB, but older models require MOBI for direct transfer.
Most EPUB to MOBI conversions complete within seconds for standard-sized files. Larger files may take longer depending on the conversion complexity.
MOBI is ideal for older kindle devices, legacy ebooks. Mobipocket, legacy Amazon Kindle format
Yes, converting EPUB to MOBI uses lossy compression, which reduces file size by discarding some visual data. Set quality to 85-95% for a good balance of quality and file size.
MOBI files are typically 50-80% smaller than EPUB files because MOBI uses efficient lossy compression. The exact reduction depends on quality settings.
Complete list of supported ebook format pairs
Convert EPUB or DOCX to MOBI or AZW3 format for Amazon Kindle devices. Ensure proper formatting and table of contents generation.
Convert to EPUB format for distribution on Apple Books. EPUB is the standard format for most ebook retailers except Amazon.
Convert PDF documents to EPUB or MOBI for reading on e-reader devices. Reflowable text adapts to any screen size.
Convert ebooks to EPUB for long-term archival. EPUB is an open standard format supported by almost all reading devices and software.
Before conversion, ensure your source document has proper heading styles (H1, H2, H3) for automatic table of contents generation in the ebook.
Embedded fonts increase file size and may not render on all devices. Stick to standard fonts when possible for better compatibility.