Convert string to Base64

Convert a string to Base64 using:

CLI

Use base64 to Base64 encode your string on the command-line:

base64 <<< 'your string'

Output:

eW91ciBzdHJpbmcK

However, this includes the newline at the end. To encode without the newline, use printf:

printf 'your string' | base64

Output:

eW91ciBzdHJpbmc=

For those on macOS, use pbcopy to copy the output to your clipboard:

printf 'your string' | base64 | pbcopy

If you don’t have base64 installed, use openssl:

printf 'your string' | openssl base64

Use Buffer to convert your string to Base64 in Node.js:

node
> Buffer.from('your string').toString('base64')
'eW91ciBzdHJpbmc='

Or do this in one-line:

node -p 'Buffer.from("your string").toString("base64")'

Use btoa to encode the string in your browser’s JavaScript console:

window.btoa('your string');