MobileRead Forums - View Single Post - EPUB -> CBZ Conversion?

Cactus Chef · 12-31-2020, 09:45 AM

I did a thread search before posting this, and I see alot of articles on converting CBZ -> EPUB, but nothing on the reverse.

My use-case is that I have a bunch of digital comics I purchased from a vendor (we'll call them "Rainforest") and then stripped the DRM to get an EPUB. I'd prefer to just have them as generic CBR/CBZ files, though, so that I can leverage the dedicated comic-book reader apps on my tablet.

I've found that I can manually make a CBZ file from a comic source EPUB by just yanking the "Images" directory out of the extracted EPUB, zipping it up, and renaming it to a .CBZ extension. This is trivial to do, but quite time-consuming.

Has anyone created a plugin/conversion option that would let me do this within Calibre? I am sure this might result in some missing metadata, but I did try googling around, and as far as I'm aware there is no established "standard" for CBR/CBZ files for metadata files, etc. It looks like it's literally just a Zip Archive or RAR Archive of images, with the first chronologically-named image serving as the comic's cover.

If I'm wrong on this front, I'd appreciate any info about the CBR/CBZ standard.

12-31-2020, 09:45 AM	#1
Cactus Chef Fanatic Posts: 589 Karma: 7058832 Join Date: Apr 2019 Location: East Coast, United States Device: Kobo Sage, Kobo Clara HD, Galaxy Tab S5e, Kindle 4th Gen	EPUB -> CBZ Conversion? I did a thread search before posting this, and I see alot of articles on converting CBZ -> EPUB, but nothing on the reverse. My use-case is that I have a bunch of digital comics I purchased from a vendor (we'll call them "Rainforest") and then stripped the DRM to get an EPUB. I'd prefer to just have them as generic CBR/CBZ files, though, so that I can leverage the dedicated comic-book reader apps on my tablet. I've found that I can manually make a CBZ file from a comic source EPUB by just yanking the "Images" directory out of the extracted EPUB, zipping it up, and renaming it to a .CBZ extension. This is trivial to do, but quite time-consuming. Has anyone created a plugin/conversion option that would let me do this within Calibre? I am sure this might result in some missing metadata, but I did try googling around, and as far as I'm aware there is no established "standard" for CBR/CBZ files for metadata files, etc. It looks like it's literally just a Zip Archive or RAR Archive of images, with the first chronologically-named image serving as the comic's cover. If I'm wrong on this front, I'd appreciate any info about the CBR/CBZ standard.