pixelated black and white texture. dithered abstract random background. digitalized backdrop for banner, poster, flyer

halftone bitmap grunge pixel wave dither abstract noise background element texture vector shape geometric grain distort figure digitalized duotone semitone bg comic cartoon raster squiggly squiggle curvy wiggly manga anime brutalist techno twist stranded convolute woven wreathed flyer pattern glitch mosaic bw code random qr black white square irregular