Run results for: base64 vs json.stringify

Run details:

User agent: Mozilla/5.0 (iPhone; CPU iPhone OS 16_5 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) CriOS/114.0.5735.124 Mobile/15E148 Safari/604.1

Browser: Chrome Mobile iOS 114

Operating system: iOS 16.5

Device Platform: Mobile

Date tested: one year ago

Test name	Executions per second
base64 short string	7276628.0 Ops/sec
base64 long string	1055708.4 Ops/sec
json short string	7739631.5 Ops/sec
json long string	964363.9 Ops/sec

Script Preparation code:

var dataShort = rand();
var dataLong = Array.from({ length: 100 }, rand).join("\n");
function rand() {
  return Math.random().toString(36);
}

Tests:

base64 short string
btoa(dataShort);
base64 long string
btoa(dataLong);
json short string
JSON.stringify(dataShort);
json long string
JSON.stringify(dataLong);

Run results for: base64 vs json.stringify

base64 short string

base64 long string

json short string

json long string