Reference Source

Microsoft compressed file in Quantum format — file signature 53 5A 44 44 88 F0 27 33 at offset 0

For Microsoft compressed file in Quantum format, hex signature is 53 5A 44 44 88 F0 27 33; offset is 0; extension is ?? _, recorded from its source on 2026-08-03.

Hex signature
53 5A 44 44 88 F0 27 33
Offset
0 verified
Extension
?? _ verified
Format
Microsoft compressed file in Quantum format
Sourceen.wikipedia.org
Verified
Review by
DatasetFile format magic numbers

What the source says

SZDDˆð'3 | 0 | ??_ | Microsoft compressed file in <https://en.wikipedia.org/wiki/Data_compression> Quantum format, used prior to Windows XP. File can be decompressed using Extract.exe or Expand.exe distributed with earlier versions of Windows. After compression, the last character of the original filename extension is replaced with an <https://en.wikipedia.org/wiki/Underscore> underscore , e.g. ‘Setup.exe’ becomes ‘Setup.ex_’. |

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

Source

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