Taken from https://www.shadertoy.com/view/Md2GDw by Kusma with added controls and some minor changes for more glitches
simple block and line glitch effect with image shifting (adjust speed). corrupts everything, works best with stills, full screen images and slowly animated parameters.
can be quite colorful if you don’t use grey images
License Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License.