ZIM (file format)
The format allows for the compression of articles, features a full-text search index and native category and image handling similar to MediaWiki, and the entire file is easily indexable and readable using a program like Kiwix – unlike native Wikipedia XML database dumps.
ZIM stands for "Zeno IMproved", as it replaces the earlier Zeno file format. Its file compression uses LZMA2, as implemented by the xz-utils library. The openZIM project is sponsored by Wikimedia CH, and supported by the Wikimedia Foundation.
- Kiwix—ZIM reader