Does OPF work on Kindle?
This morning I found that Amazon has a collection of sample books that you can use with Kindlegen, and the “Guide” project specifically includes the following example OPF file, which is well-documented.
What is the best format for Kindle Paperwhite?

Some people like to sideload in their own books on the Kindle, since it can get quite expensive to buy them all. EPUB is the most popular ebook format, since it plays nice with virtually every e-reader in the world.
What is the native format for Kindle books?
AZW format
The primary format that the Kindle is perhaps most comfortable dealing with is the AZW format. That is the format that applies to all e-books available from the Kindle store. It is almost identical to the Mobi format and the reason behind it is that the AZW has its origins in the Mobi format.
What is the OPF file?
‘OPF’ stands for Open Package Format. It’s essentially an XML file, although it has the file extension . opf instead of . xml. It lists all of the contents of your ePUB, and tells the reading system what order to display the files in.

What is metadata OPF?
The metadata. opf file just has a copy of the the metadata for the book it is associated with that was previously only held in the Calibre metadata database.
What is PRC book format?
The PRC file format is an eBook format created by Mobipocket and used exclusively for Palm devices that support PRC or PDB extensions. PRC files can also be viewed on PC using the Mobipocket Reader Desktop. Unprotected PRC files can also be viewed on the Amazon Kindle reading device.
What app opens OPF?
Programs that open OPF files include Adobe Digital Editions, InDesign, KDE Okular, Geometer Plus FBReader, and Calibre. Other files associated with OPF include EPUB, OCF, OPS, MOBI, AZW3, KFX, FB2, HTMLZ, LIT, LRF, PDB, PDF, TXT, and ZIP.
What is an OPF file Kindle?
The Open Packaging Format (OPF) file is an XML file that contains metadata describing your book. Copy the example OPF content below, and save it in the same directory as your HTML content file. The part of the file name must be the same as your HTML content file. So, if your content file is your-book.
What is OPF format?
What formats does Amazon KDP accept?
File guidelines No Bleed: If your book does not contain bleed, you can upload your manuscript as a PDF, DOC, DOCX, RTF, HTML, or TXT file. KDP will automatically convert these file types to PDF prior to publishing/printing.
How do I play an OPF file?
Programs that open or reference OPF files
- Adobe Digital Editions. Adobe InDesign 2022. Calibre. KDE Okular. Geometer Plus FBReader.
- Mac. Adobe Digital Editions. Adobe InDesign 2022. Calibre. KDE Okular. Geometer Plus FBReader.
- Linux. Calibre. KDE Okular. Geometer Plus FBReader.
What file formats does Kindle Paperwhite support?
Kindle paperwhite supported document formats: TXT, PDF The above five file formats are natively readable on kindle paperwhite. If you want to read them, you just need to transfer the files to your kindle paperwhite.
Can the Kindle Paperwhite read EPUB files?
The Kindle Paperwhite can read Amazon file types (including .mobi and .azw files) natively. PDF files can also be opened, but they’re sometimes problematic to read. ePub files are not supported by Kindle devices.
Where can I find the OPF file?
The OPF file can be located anywhere in the ePub file structure and can be named whatever you wish. In ePub there is a folder called META-INF that must always be present. Inside there must be a file call container.xml. The content of that container file points to the OPF file. It might look like:
What file types are compatible with Kindle Fire?
Music files in MP3 format are compatible with kindle. Apart from this, audio books from Audible with the AAX and AA extensions are also supported by kindle. Your kindle paperwhite and kindle fire can’t play every file.