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Information About EPUB

Learn about the features of EPUB file format.

Basic Information

EPUB
CategoryThe general type of file (audio, image, etc.).
documents
CompressionMethod used to reduce file size (Lossy, Lossless, Uncompressed).
Lossless
Relative SizeTypical file size compared to other formats.
Medium
MIME TypesCommon MIME types associated with the format.
  • application/epub+zip
Open FormatIs the format specification publicly available and free to use?
Yes

Technical Details

EPUB
Bit DepthNumber of bits used to represent color or audio sample amplitude (higher means more detail).
-
ResolutionImage dimensions (pixels) or audio sample rate/video dimensions.
-
Max QualityHighest achievable quality level or characteristic.
-
Encoding MethodSpecific algorithm or standard used for encoding the data.
-
Max File Size LimitAny known maximum file size limitations.
Software/Device dependent

Features & Usage

EPUB
CompatibilitySoftware, devices, or platforms that support the format.
  • E-readers (except older Kindles)
  • Tablets
  • Smartphones
  • Desktop e-reader software
Use CasesCommon applications and scenarios where the format is used.
  • E-books
  • Digital publications
Metadata SupportCan the format store additional information (tags, descriptions, etc.)?
Yes
Transparency SupportDoes the format support transparent backgrounds (for images)?
-
Editing FriendlyIs the format suitable for easy editing without significant quality loss?
No
Encryption SupportDoes the format support password protection or encryption?
Yes

Pros & Cons

EPUB
ProsAdvantages and strengths of the format.
  • Open standard for eBooks
  • Reflowable text adapts to screen size
  • Supports multimedia
ConsDisadvantages and weaknesses of the format.
  • Not natively supported by Amazon Kindle (requires conversion)
  • Formatting can vary between readers