How fast can browsers process base64 data?

Looks like this was brought up there as a result of this article too, which is neat! And helpful since I was just messing with a node script that is heavily decoding base64

Wow, finally! I've had to work around this so many times in the past (btoa/atob do not play nicely with raw binary data - although there are workarounds on the decode path involving generating data URIs)

  precision highp float;
  uniform vec2 size;
  uniform sampler2D src,tab;
  void main(){
    vec4 a=(gl_FragCoord-.5)*3.,i=vec4(0,1,2,0)+a.y*size.x+a.x,y=floor(i/size.x),x=i-y*size.x;
    #define s(n)texture2D(src,vec2(x[n],y[n])/size)[0]
    #define e(n)texture2D(tab,vec2(a[n],0))[0]
    a=vec4(s(0),s(1),s(2),0)*255.*pow(vec4(2),-vec4(2,4,6,0)),a=fract(a).wxyz+floor(a)/64.,gl_FragColor=vec4(e(0),e(1),e(2),e(3));
  }

This had me scratching my head. Why would a base64 decoder need to skip spaces? But indeed, MDN documents this behavior:

> Note that: The whitespace in the space is ignored.

JS never ceases to surprise. Also, check out that typo :D

https://developer.mozilla.org/en-US/docs/Web/JavaScript/Refe...