AFCP
From Just Solve the File Format Problem
AFCP (AXS File Concatenation Protocol) is a metadata format for image files. Its main uses are embedding IPTC-IIM data, and thumbnail images. It's not clear what AXS refers to (since it was a business in Berkely, CA, US the initials may refer to "Alpha Chi Sigma", a university's fraternity).
It is designed to be used as a "trailer" that can be appended to a number of different file formats. It could potentially be used in other ways, and even has TIFF tag 34152 assigned to it. But it is not a self-contained format (it contains pointers relative to the beginning of the file), so such use would be problematic.
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Identification
In most cases, the signature "ASX!" or "ASX*" appears beginning 12 bytes from the end of the file.
Specifications
- AXS File Concatenation Protocol
- Another copy, from archive.org
![[1]](https://commons.wikimedia.org/wiki/File:U.S._Department_of_Energy_-_Science_-_298_022_004_(30871102953).jpg){kind=link}