Compressed ISO image — file signature 49 73 5A 21 at offset 49

For Compressed ISO image, hex signature is 49 73 5A 21; offset is 49; extension is isz, recorded from its source on 2026-08-03.

What the source says

indows Virtual PC Windows 8 Virtual Hard Disk file format | 49 73 5A 21 | IsZ! | 0 | isz | Compressed <https://en.wikipedia.org/wiki/ISO_image> ISO image | 44 41 41 | DAA | 0 | daa | <https://en.wikipedia.org/wiki/Direct_Access_Archive> Direct Access Archive PowerISO | 4C 66 4C 65 | LfLe | 0 | evt | Windows <https://en.wikipedia.org/wiki/Event_Viewer> Event

— 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.