# 4B 57 41 4A — File format magic numbers

For 4B 57 41 4A, offset is 0; extension is ??_; format is Windows 3.1x Compressed File, recorded from its source on 2026-08-03.

- **Hex signature:** 4B 57 41 4A _(unconfirmed — we could not tie this to the quote below)_
- **Offset:** 0 _(unconfirmed — we could not tie this to the quote below)_
- **Extension:** ??_
- **Format:** Windows 3.1x Compressed File

## What the source says

> ??_ | Windows 3.1x Compressed File

## Source

- https://en.wikipedia.org/wiki/List_of_file_signatures

Last verified: 2026-08-03. Review by: 2027-08-03.
Part of [File format magic numbers](https://referencesource.org/file-format-signatures/).