# 49 49 2B 00 — File format magic numbers

For 49 49 2B 00, offset is 0; extension is tif tiff; format is BigTIFF, recorded from its source on 2026-08-03.

- **Hex signature:** 49 49 2B 00 _(unconfirmed — we could not tie this to the quote below)_
- **Offset:** 0 _(unconfirmed — we could not tie this to the quote below)_
- **Extension:** tif tiff _(unconfirmed — we could not tie this to the quote below)_
- **Format:** BigTIFF

## What the source says

> BigTIFF [ 11 ]

## 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/).