# 28 B5 2F FD — File format magic numbers

For 28 B5 2F FD, offset is 0; extension is zst; format is Zstandard compress, recorded from its source on 2026-08-03.

- **Hex signature:** 28 B5 2F FD _(unconfirmed — we could not tie this to the quote below)_
- **Offset:** 0 _(unconfirmed — we could not tie this to the quote below)_
- **Extension:** zst _(unconfirmed — we could not tie this to the quote below)_
- **Format:** Zstandard compress

## What the source says

> <https://en.wikipedia.org/wiki/Zstandard> Zstandard compress [ 79 ] [ 80 ]

## 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/).