In computer science, Base64 is a group of binary-to-text encoding schemes that represent binary data in an ASCII string format by translating it into a radix-64 representation - as stated in Wikipedia.
To make it simple, it represents binary data in ASCII format.
How to convert a string to base64?
To convert a string to base64 you have to use the btoa() method in the window object in the browser.
- You need to pass the string as an argument to the
btoa()method. - The method returns a base64 encoded value.
// string
const str = "Hello, World!";
// convert to base64
const base64 = btoa(str);
console.log(base64); // SGVsbG8sIFdvcmxkIQ==
How to convert a base64 to string?
To convert a base64 to string value you have to use the atob() method in the window object in the browser.
- You need to pass the base64 value as an argument to the
atob()method. - The method returns a string value.
// base64 value
const base64 = "SGVsbG8sIFdvcmxkIQ==";
// convert to string
const str = atob(base64);
console.log(str); // Hello, World!
Abbreviation
btoa: stands for binary to ASCIIatob: stands for ASCII to binary
