Extrafile
By now we’ve all seen so many jpg and bmp glitches that they’ve almost become just another effect. Unfortunately, due to the limited amount of image file formats there are only a finite number of ways to exploit them.
Extrafile, by Kim Asendorf, is a great response to this. The application allows one to convert standard image formats to ones that he has created (4bc, bascii, blinx, cci, mcf, uspec, xff), each with their own properties that sets them apart from standard image formats.
Kim asked myself and a number of other artists to mangle, hack, reconfigure and exploit these file formats, the results of which are quite unlike any “standard” glitches, if such a thing exists.
The program can be downloaded for Mac OSX NOW! (Linux port plzkthxbai)
Author's note — 16.10.2026
Input
The input image was this photo of the Bull outside the Bull Ring shopping centre in Birmingham.
Audacity glitches
These images were created by databending each file format using Audacity and then converting it back to a jpg.
sed glitches
These images were created “by hand” by using sed, which is a command line utility to do a search and replace of text.











