# 00 00 00 18 66 74 79 70 68 65 69 63 00 00 00 00 — File format magic numbers

For 00 00 00 18 66 74 79 70 68 65 69 63 00 00 00 00, offset is 0; extension is heif; format is Apple HEIF image file, verified against its source on 2026-08-03.

- **Hex signature:** 00 00 00 18 66 74 79 70 68 65 69 63 00 00 00 00
- **Offset:** 0
- **Extension:** heif
- **Format:** Apple HEIF image file

## What the source says

> 00 00 00 18 66 74 79 70 68 65 69 63 00 00 00 00 | ␀␀␀ftypheic␀␀␀␀ | 0 | heif | Apple HEIF image file [ 102 ] |

## 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/).