You downloaded a .cbz or .cbr file — a digital comic, a manga volume, or a graphic novel — and your Mac has no idea what to do with it. Preview can’t open it. Apple Books ignores it. That’s because macOS has no built-in support for comic book archives.
Here’s how to actually read them.
What Are CBZ, CBR, and CB7 Files?
Comic book archives are simple containers — compressed folders of sequential images, one per page. The file extension tells you the compression format:
| Format | Extension | Compression | Notes |
|---|---|---|---|
| CBZ | .cbz | ZIP | Most common, universally supported |
| CBR | .cbr | RAR | Legacy format, still widely used |
| CB7 | .cb7 | 7-Zip | Less common, best compression |
Each archive contains page images (JPEG or PNG) plus optional metadata in a ComicInfo.xml file — title, author, series, issue number, and more.
These formats are the standard for digital comics, manga scans, and graphic novels outside of platform-specific stores like ComiXology or Kindle.
Why Mac Can’t Open Them
macOS treats .cbz files as regular ZIP archives. If you double-click one, Finder extracts a folder of images instead of displaying them as a comic. .cbr and .cb7 files don’t even get that far — macOS can’t decompress RAR or 7-Zip natively.
You need a dedicated reader.
Option 1: BookShelves (Easiest)
BookShelves reads CBZ, CBR, and CB7 files natively on macOS and iOS. No conversion, no plugins, no separate comic reader app — your comics sit alongside your EPUBs and PDFs in one library.
How it works:
- Download BookShelves from the App Store
- Drag your
.cbz,.cbr, or.cb7files into the BookShelves window - Start reading
What you get:
- All three formats — CBZ, CBR, and CB7, no conversion needed
- ComicInfo.xml support — title, author, series, and issue metadata are imported automatically
- Page-turn navigation — keyboard arrows, trackpad swipe, or click-to-advance
- Full-screen reading — distraction-free comic viewing
- One library — comics alongside your books, organized however you want
- Manga mode — right-to-left page order for manga, with auto-detection or manual toggle
- iCloud sync — your comics sync between Mac and iPhone/iPad
- Security built in — archive validation protects against malformed files (path traversal, zip bombs, oversized entries)
BookShelves treats comics as first-class citizens, not an afterthought bolted onto an ebook reader.
Option 2: YACReader
YACReader is a dedicated comic reader for macOS. It’s open-source, supports CBZ and CBR, and includes a library manager (YACReaderLibrary) for organizing large collections.
Pros:
- Purpose-built for comics
- Library management with reading lists
- Open-source and free
Cons:
- Separate app from your ebook reader
- No EPUB/PDF support — comics only
- No iOS companion without additional setup
Option 3: SimpleComic
SimpleComic is a lightweight, open-source comic viewer for Mac. It handles CBZ and CBR files with a minimal interface.
Pros:
- Simple and fast
- Drag-and-drop opening
- Free
Cons:
- Viewer only — no library management
- No metadata support
- Not actively maintained
Option 4: Rename and Extract (Manual)
Since CBZ files are just ZIP archives, you can rename .cbz to .zip, extract, and view the images in Preview or any image viewer. This works in a pinch but isn’t practical for regular reading.
mv comic.cbz comic.zip
unzip comic.zip -d comic-pages/
open comic-pages/
This doesn’t work for CBR or CB7 files without installing additional decompression tools.
Where to Find Free Comics
Several sources offer free, legal digital comics:
- Digital Comic Museum — thousands of public domain Golden Age comics in CBZ format
- Comic Book Plus — public domain comics from the 1930s–1960s
- Internet Archive — large collection of scanned comics and graphic novels
Many independent comic creators also distribute their work as DRM-free CBZ files through platforms like Gumroad and itch.io. For non-comic ebooks, our guide to the 30 best free classic books has DRM-free EPUBs you can download right now.
Which Format Should You Use?
If you’re downloading comics and have a choice:
- CBZ is the safest bet — ZIP is universal, every comic reader supports it
- CBR works but requires RAR support, which not all readers include
- CB7 has the best compression but the least reader support
BookShelves supports all three, so format choice doesn’t matter if that’s your reader.
Related Guides
- EPUB vs PDF — Which Format Should You Use? — how comic book formats compare to ebook formats
- 6 Best eBook Readers for Mac in 2026 — BookShelves and other readers compared side by side
- How to Read EPUB Files on Mac — getting started with EPUBs alongside your comics
- Where to Buy DRM-Free Ebooks — stores that sell ebooks you actually own
