️ blast64
Apparently the fastest way of decoding Base64 in Chrome.
Installation
npm install blast64Usage
var blast64 = require('blast64');
// From base64 to UTF-8 string
blast64.decode(base64string);
// From base64 to Uint8Array
blast64.decode_to_array(base64string);Testing and Benchmark
This is the average time from encoded string to UTF-8 encoded result.
The was ran 10000000 times.
The ~355kb payload was ran 1000 times.
| Load | atob+TextDecoder | js-base64 | fast64 | base64-js | blast64 |
|---|---|---|---|---|---|
| 0.0019 ms | 0.0025 ms | 0.0031 ms | 0.0018 ms | 0.0010 ms | |
| ~355kb | 31.257 ms | 4.5263 ms | 2.9529 ms | 1.7501 ms | 1.3920 ms |
And this are the average times without the TextDecoder step where relevant:
| Load | fast64[0] | atob | blast64.decode_to_array |
|---|---|---|---|
| 0.0017 ms | 0.0008 ms | 0.0005 ms | |
| ~355kb | 2.5336 ms | 1.7580 ms | 1.0701 ms |
[0] fast64.decode(str, {uint8Array: true})
Not bad for a few hours of hacking I'd say! But it's still only decoding, would have to sit down and make it encode as well at some point.