VFX-JS

Your system asks for reduced motion, so VFX-JS draws nothing. Demos on this site show plain HTML.

Variable

MATRIX_GLYPHS

effects/src/matrix.ts:29 ↗ 
import { MATRIX_GLYPHS } from "@vfx-js/effects";

Default glyph pool: half-width katakana (the look the film used) plus digits and a few symbols. Mirrored katakana isn't reproducible from a normal font, so these render upright.

const MATRIX_GLYPHS: "ﾊﾋﾌﾍﾎｱｲｳｴｵｶｷｸｹｺｻｼｽｾｿﾀﾁﾂﾃﾄﾅﾆﾇﾈﾉﾏﾐﾑﾒﾓﾔﾕﾖﾗﾘﾙﾚﾛﾜｦﾝ0123456789Z:.\"=*+-<>|"