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

Build for vite-plugin-singlefile-compression

Preview: https://bddjr.github.io/base128/

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: 10.177ms
time toString: 2.107ms
time toJSTemplateLiterals: 11.586ms
toJSTemplateLiterals length: 796961
time eval: 5.97ms
time decode: 4.436ms
equal: true

base64:
encoded length: 909448

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

50MB
file length: 50000000

base128:
time encode: 69.156ms
time toString: 10.252ms
time toJSTemplateLiterals: 148.9ms
toJSTemplateLiterals length: 58486143
time eval: 1.046s
time decode: 183.151ms
equal: true

base64:
encoded length: 66666668