// REFERENCE
ICO signature
Signature (hex): 00 00 01 00
A Windows ICO icon starts with 00 00 01 00. It's the format of favicon.ico. A 00 00 02 00 indicates a cursor (CUR), nearly identical.
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png
PNG signature jpg
JPG/JPEG signature gif
GIF signature bmp
BMP signature webp
WebP signature tiff
TIFF signature
PNG signature jpg
JPG/JPEG signature gif
GIF signature bmp
BMP signature webp
WebP signature tiff
TIFF signature
Signatures verifiable with CyberEscudo's magic-bytes identifier. Educational content.