43 57 53

Shockwave Flash file

category: file-signature
normalized: 435753
confirmed: 2026-03-15
lookups: 1
source: https://www.garykessler.net/

Shockwave Flash file. File extension(s): SWF. Kessler type: Multimedia.

Similar magic numbers

value	name	category
46 57 53	Shockwave Flash player	file-signature
5A 57 53	Macromedia Shockwave Flash	file-signature
43 52 45 47	Win9x registry hive	file-signature
44 4F 53	Amiga disk file	file-signature
43 50 54 46 49 4C 45	Corel Photopaint file	file-signature