Which MIME types are related to file extension ".fb2"?
The .fb2 file extension is associated with 2 MIME types:
application/x-fictionbook+xml, application/x-fictionbook.
A MIME type is a string that tells browsers and other tools how to handle a particular kind of file.
About .fb2 Files
FB2 files are e-book files built on an XML structure. They store text and metadata in a structured way.
They use the MIME types application/x-fictionbook+xml and application/x-fictionbook to identify the file content.
- Main Use: They are designed to hold novels and other literary works.
- Technical Detail: They follow the FictionBook markup language standard.
- Software Support: Programs like FBReader, CoolReader, and AlReader can open them.
- Functionality: They preserve chapters, formatting, and metadata, making them ideal for e-book distribution.
Based on information from FilExt.com see FB2.
Relationship between file extension and MIME type
A file extension is a suffix at the end of a filename that indicates what type of file it is. File extensions help both users and operating systems identify what application should be used to open the file.
File extensions are typically separated from the filename by a period (dot) and consist of 2-4 characters, though they can be longer. For example, in the filename "document.pdf", ".pdf" is the file extension.
File extensions are closely related to MIME types, as they both serve to identify the format of a file. However, while MIME types are used primarily by web browsers and servers, file extensions are used by operating systems and applications.
Associated MIME types
application/x-fictionbook+xml, application/x-fictionbook
FAQs
What is an FB2 file?
An FB2 file is an eBook saved in the FictionBook format, which is an XML-based standard for electronic documents. Unlike layout-oriented formats like PDF, FB2 files describe the structure of the document (chapters, verses, citations) allowing the text to reflow and adapt perfectly to any screen size. They are commonly identified by the MIME type application/x-fictionbook+xml.
How do I open an FB2 file on Windows or Mac?
You need dedicated e-reader software to view these files comfortably. Calibre is a highly recommended, free, and open-source library manager that can view and organize FB2 files. Other lightweight options include FBReader, CoolReader, and Sumatra PDF.
Can I read FB2 files on an Amazon Kindle?
No, Amazon Kindle e-readers do not natively support the .fb2 extension. To read these books on a Kindle, you must first convert them to a supported format like generic EPUB (for Send-to-Kindle) or AZW3. The software Calibre is the standard tool for performing this conversion.
How can I convert an FB2 file to PDF or EPUB?
The most reliable method is using desktop software like Calibre, which preserves metadata and formatting during conversion. Alternatively, for quick one-off conversions without installing software, you can use online services like Convert.Guru or Convert.Guru.
What apps open FB2 files on Android and iOS?
On Android, Moon+ Reader and FBReader are popular choices that offer extensive customization for text rendering. On iOS (iPhone/iPad), apps like KyBook 3, TotalReader, or ShortBook provide native support for opening and reading FB2 files.
Is an FB2 file just a text file?
Technically, yes; because it uses XML, you can open an FB2 file in a simple text editor like Notepad or TextEdit to view the raw code. However, it will contain many markup tags (like <p>, <title>, <body>), making it difficult to read as a book without proper e-reader software.
What MIME type should be used for serving FB2 files?
When configuring a web server to distribute FictionBook files, the correct MIME type is usually application/x-fictionbook+xml. Some systems may also accept application/x-fictionbook. You can find more details on configuring these types at mime-type.com.
General FAQ
What is a MIME type?
A MIME (Multipurpose Internet Mail Extensions) type is a standard that indicates the nature and format of a document, file, or assortment of bytes. MIME types are defined and standardized in IETF's RFC 6838.
MIME types are important because they help browsers and servers understand how to process a file. When a browser receives a file from a server, it uses the MIME type to determine how to display or handle the content, whether it's an image to display, a PDF to open in a viewer, or a video to play.
MIME types consist of a type and a subtype, separated by a slash (e.g., text/html, image/jpeg, application/pdf). Some MIME types also include optional parameters.
How do I find the MIME type for a file?
You can check the file extension or use a file identification tool such as file --mime-type on the command line. Many programming languages also provide libraries to detect MIME types.
Why can one extension have multiple MIME types?
Different programs and historical usage may assign various MIME identifiers to the same file format. Listing them together helps maintain compatibility across tools.