DOS MZ executable — file signature 4D 5A at offset 0

For DOS MZ executable, hex signature is 4D 5A; offset is 0; extension is exe, recorded from its source on 2026-08-03.

What the source says

MZ | 0 | exe dll mui sys scr cpl ocx ax iec ime rs tsp fon efi | <https://en.wikipedia.org/wiki/DOS_MZ_executable> DOS MZ executable and its descendants (including <https://en.wikipedia.org/wiki/New_Executable> NE and <https://en.wikipedia.org/wiki/Portable_Executable> PE )

— en.wikipedia.org, retrieved 2026-08-03

Source

• en.wikipedia.orghttps://en.wikipedia.org/wiki/List_of_file_signatures

Last verified against source: 2026-08-03. Due for re-check by 2027-08-03. This page as Markdown · OKF bundle · full dataset as JSON.