For the "I just need to look at one file" case: a CBZ reader in the browser

[olliver]

Hi all, I'm an independent developer, and I built CBZ Reader, a small browser-based reader for the CBZ files you already own. It's for the case in the title: a file arrives while you're on someone else's laptop, or on a machine where installing a reader isn't worth it.

What it does:

- Single page, true two-page spreads, or vertical continuous scrolling
- Pinch zoom 1x–4x, double-tap to reset
- Bookmarks and resume position
- Right-to-left reading for manga
- ComicInfo.xml metadata, with chapter and folder jumping
- CBZ → PDF conversion in the browser, too

Privacy: no account and no ads; reading and conversion run locally in the page, so your file isn't sent to my server.

Limitations, honestly:

- CBR and CB7 aren't supported yet (RAR licensing)
- Very large pages are downsampled to fit a memory budget
- On iOS I've only tested Safari 18

You can try it without hunting for a file: the demo page loads a one-click public-domain sample. Everything is at https://cbzreader.mavi.help/ — and I'd like to hear what's missing, especially on archives that behave oddly.