Wrong MIME types for comic book formats #23
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Definitely something I can send a pull request for. 🙂 |
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I just learned that application/vnd.comicbook-rar and |
rluetzner
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cb7, cba, cbr, cbt and cbz all refer to different types of digital comicbooks. The last letter of the extension indicates the compression algorithm that was used: 7zip, arc, rar, tar or zip. All these filetypes used to have the `application/x-cbr` MIME type assigned to them. However, that has since been deprecated and was replaced with - `application/vnd.comicbook-rar` for rar compressed files and - `application/vnd.comicbook+zip` for rar compressed files. Only these two are officially listed by IANA https://www.iana.org/assignments/media-types/application/vnd.comicbook+zip . cbr and cbz are by far the most common file extensions for comicbooks. There's no official MIME type for cb7, cba or cbt files. However, with rar being a proprietary compression algorithm, FOSS applications will often refuse to handle files that identify themselves as `application/x-cbr`, so I decided to assign extension specific MIME types to them. I've seen these being used by other applications, specifically comic book readers. I've read through the docs on iana.org, but haven't figured out why they chose `-rar`, but `+zip`. This fixes khellang#23.
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Independent of the file extensions, this library always returns
application/x-cbr. This is incorrect, as there are specific MIME types for all the extensions, e.g.application/x-cbzorapplication/x-cb7.To understand the impact, see the following issues in the Jellyfin project:
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Here's a tl;dr:
cbr(a.k.a. Rar) is a proprietary compression algorithm, so most FOSS eReaders will not accept it. 🙂The text was updated successfully, but these errors were encountered: