Smaller than base64, only use ASCII, can run in web browser.

Build for vite-plugin-singlefile-compression

Setup

npm i base128-ascii@latest

import base128 from "base128-ascii"
import fs from "fs"

const input = fs.readFileSync("example.gz")

const encodedTemplate = base128.encode(input).toJSTemplateLiterals()

const decodedBytes = base128.decode(eval(encodedTemplate))

---

Effect

Encode this jpg file, use base128 is 112487 Bytes smaller than base64:

screenshot-45.519.jpg
file length: 682086

base128:
time encode: 7.306ms
time toString: 0.168ms
time toJSTemplateLiterals: 1.876ms
toJSTemplateLiterals length: 796961
time eval: 6.242ms
time decode: 10.614ms
equal: true

base64:
encoded length: 909448

Encode 50MB file, use base128 is 8180525 Bytes smaller than base64:

50MB
file length: 50000000

base128:
time encode: 67.717ms
time toString: 10.025ms
time toJSTemplateLiterals: 197.364ms
toJSTemplateLiterals length: 58486143
time eval: 1.083s
time decode: 171.262ms
equal: true

base64:
encoded length: 66666668