It's a nice filter, but not a glitch. True glitch should unpredictably damage data or device. The point is to seek aesthetics in malfunction. The generator ment

It's a nice filter, but not a glitch. True glitch should unpredictably damage data or device. The point is to seek aesthetics in malfunction. The generator mentioned in other comments https://snorpey.github.io/jpg-glitch/ https://snorpey.github.io/jpg-glitch/ looks more authentic.