count how many bytes something is just copy ur script in the editbox and push enter
just a lil simple snippet

alias countcode {
  window -k0dE +fxtyn @countcode
}
on *:input:@countcode:{
  echo @countcode $1-
  write countcode.txt $1-
  window -dok0e +ftxyn @bytes -1 -1 200 100
  clear @bytes
  echo @bytes $bytes($file(countcode.txt).size,b) bytes
}
on *:close:@countcode: .remove countcode.txt
on *:input:@bytes:{
  if ($1 == clear) { .remove countcode.txt
    window -c @bytes
    clear @countcode
  }
  if ($1 == end)  {
    window -c @bytes
    window -c @countcode @countcode
    .remove countcode.txt
  }
}