How it works

base64

convertBase64ToUint8Array(data: string): Uint8Array

Converts a base64 encoded ascii string to a Uint8Array.

convertUint8ArrayToBase64(data: Uint8Array): string

Converts a Uint8Array to a base64 encoded ascii string.

convertStringToBase64(str: string): string

Takes a ucs-2 string and returns a base64 encoded ascii string.

convertBase64ToString(str: string): string

Takes a base64 encoded ascii string and returns a ucs-2 string.

Example

const str = "Hello ☸☹☺☻☼☾☿ World ✓"
const uint8Array = new TextEncoder().encode(str)
uint8Array === convertBase64ToUint8Array(convertUint8ArrayToBase64(uint8Array))
str === convertBase64ToString(convertStringToBase64(str))

base64url

convertBase64ToBase64url(base64: string): string

The + and / characters of standard base64 are respectively replaced by - and _ and the padding = characters are removed.

convertBase64urlToBase64(base64url: string): string

Converts a base64url string to standard base64.

Example

const base64 = "c3ViamVjdHM/X2Q9MQ=="
const base64url = convertBase64ToBase64url(base64)

console.log(base64url) // c3ViamVjdHM_X2Q9MQ