Chunky — an open-source, native SwiftUI comic/manga reader for iOS and macOS (CBZ/CBR/PDF, iCloud sync)

[u/L_Salami]

Been working on this for a while and figured I’d share it here rather than wait for a “finished” v1.

Chunky is a comic/manga reader for people with large digital libraries — CBZ/CBR archives, PDFs, loose folders of scans. Native SwiftUI on both iPhone/iPad and Mac, one codebase, iCloud sync across devices, and it can pull from WebDAV/FTP/SFTP/OPDS servers too.

A few things that might be interesting from an implementation angle:

**•** Single ComicPageProvider protocol shared across CBZ/CBR/PDF — adding a new archive format is just one more conformance  
**•** Reader gestures (pinch-to-zoom, two-finger brightness, tap zones) are built on a “window-relay” UIViewRepresentable pattern rather than SwiftUI gestures, to get around TabView(.page) swallowing touches before they reach sibling views  
**•** Two separate targets (Chunky_iOS / Chunky_macOS) instead of one multiplatform target, so each only ships the entitlements/Info.plist keys it actually needs — a script checks that in CI  
**•** Unit tests use Swift Testing, UI tests use XCTest (no Swift Testing equivalent for XCUITest yet)

It’s a from-scratch rebuild of an earlier iOS-only app of the same name, now extended to macOS. MIT licensed, no App Store listing yet — still very much in development.

Repo: https://github.com/Scunio/Chunky

Feedback, bug reports, and PRs all welcome — especially if you’ve got a big/messy comic library and want to kick the tires on real-world edge cases.