Probably the only JavaScript base64 library you'll ever need!
Encode, decode and validate base64/base64url to string/arraybuffer and vice-versa. Works in Node, Deno and browser.
- Supports regular base64 and base64url
- Convert to/from string or arraybuffer
- Validate / identify base64 and base64url
- Works in Node.js >=4.0 (both require and import).
- Works in Deno >=1.16.
- Works in browsers as standalone, UMD or ES-module.
- Includes TypeScript typings.
// Encode string as regular base64
const example1enc = base64.fromString("Hellö Wörld, how are you doing today?!");
console.log(example1enc);
// > SGVsbMO2IFfDtnJsZCwgaG93IGFyZSB5b3UgZG9pbmcgdG9kYXk/IQ==
// Decode string as regular base64
const example1dec = base64.toString("SGVsbMO2IFfDtnJsZCwgaG93IGFyZSB5b3UgZG9pbmcgdG9kYXk/IQ==");
console.log(example1dec);
// > Hellö Wörld, how are you doing today?!Full documentation available at base64.56k.guru
Node.js:
npm install @hexagon/base64 --saveDeno (x):
import { base64 } from "https://deno.land/x/b64@2.0.3/src/base64.ts";Deno (jsr.io):
import { base64 } from "jsr:@hexagon/base64";For browser/cdn usage, refer to the documentation.
-
fromArrayBuffer(buffer, urlMode) - Encodes
ArrayBufferinto base64 or base64url if urlMode(optional) is true -
toArrayBuffer(str, urlMode) - Decodes base64url string (or base64url string if urlMode is true) to
ArrayBuffer -
fromString(str, urlMode) - Encodes
Stringinto base64 string(base64url string if urlMode is true) -
toString(str, urlMode) - Decodes base64 or base64url string to
String -
validate(str, urlMode) - Returns true if
Stringstr is valid base64/base64 dependending on urlMode
If you found this library helpful and wish to support its development, consider making a donation through Hexagon's GitHub Sponsors page. Your generosity ensures the library's continued development and maintenance.
The underlying code is loosely based on github.com/niklasvh/base64-arraybuffer
MIT