base64Decode

Decodes a Base64 or Base64URL string to a Uint8Array.

Syntax

base64Decode(input: string, urlSafe?: boolean): Uint8Array

Parameters

Name	Type	Description
input	string	The Base64 or Base64URL encoded string to decode
urlSafe	boolean	(Optional) If true, treats the input as Base64URL. Default is false

Returns

Type	Description
Uint8Array	The decoded byte array

Example

const data = base64Decode("SGVsbG8gV29ybGQh");
console.log(new TextDecoder().decode(data)); // "Hello World!"

Notes

• Throws an error if the input is not a valid Base64/Base64URL string.

References

• Base64 (Wikipedia)