Hah! That's also how I first learned about the zip trick with pptx. Had never co...

bena · 2026-08-22T18:27:08

You’d be surprised how many file formats are some flavor of “zip file containing files”.

JAR/WAR, iOS apps, and others

yellowapple · 2026-08-23T01:49:48

And SQLite: https://sqlite.org/appfileformat.html

In fact, relevantly to this article: https://sqlite.org/affcase1.html

bena · 2026-08-23T02:01:53

I think it’s a decent hack.

Zip is a known format, so library support is mature. It can contain a local file system. And no one is going to casually muck about in it, so you can trust the structure.