This command line interface helps you to encode/decode base64 data with advanced features like files encoding/decoding, jwt review and html image encoding.
$ npm install --global base64-advanced-cli
... or just try it without installing it :
$ npx base64-advanced-cli -e "Hello World!"
... or try the Online Demo ๐ช
This CLI provides the following command : b64
88 ad8888ba, ,d8
88 8P' "Y8 ,d888
88 d8 ,d8" 88
88,dPPYba, 88,dd888bb, ,d8" 88
88P' "8a 88P' `8b ,d8" 88
88 d8 88 d8 8888888888888
88b, ,a8" 88a a8P 88
8Y"Ybbd8"' "Y88888P" 88
base64-advanced-client v1.x.x
Usage: b64 [options]
Options:
-d, --decode [data] set mode to encoding
-e, --encode [data] set mode to decoding
-i, --input-file <filename> read input from a file
-o, --output-file <filename> write output to a file
-v, --version display the version of this CLI
--jwt <data> display the content of a jwt token
--html encode an image into an html tag containing base64 data
--no-update-notification do not display update notifications
-h, --help display help for command
$ b64 -e "Hello World!"
Will return SGVsbG8gV29ybGQh
value.
$ b64 -d SGVsbG8gV29ybGQh
Will return Hello World!
value.
$ b64 -d SGVsbG8gV29ybGQh -o decoded.txt
Will create a file named decoded.txt
containingext " Hello world! " text, instead of displaying the output in the console.
$ b64 -e -i decoded.txt
Will read file contents and encodode it, rather than using the command input.
You can also read input from stdin (only on unix systems) to encode & decode data
$ echo "Hello World!" | b64 -e
will return SGVsbG8gV29ybGQhCg==
.
stdin is also applicable for decoding purposes
$ echo SGVsbG8gV29ybGQhCg== | b64 -d
will return Hello World!
.
This CLI provides a simple way to preview the content of JWT tokens.
$ b64 --jwt eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJuYW1lIjoiSm9obiBEb2UiLCJpYXQiOjE1MTYyMzkwMjJ9.hqWGSaFpvbrXkOWc6lrnffhNWR19W_S1YKFBx2arWBk
will return the following output :
Header : {
"alg": "HS256",
"typ": "JWT"
}
Body : {
"name": "John Doe",
"iat": 1516239022
}
You can use this CLI to directly encode your images as html base64 images (with automatic mime type dectection).
$ b64 -e --html -i image.png
Will return the html tag containing the encoded image in base 64 format (e.g. <img src="data:image/png;base64,iVBORw0K[...]g==" />
).
$ b64 -e --html -i image.png -o image.html
Will perform the same operation but will save the image html content in a file rather than simply displaying the output.
Find all releases on npm : https://www.npmjs.com/package/base64-advanced-cli
This library is still under development some changes may occur, great features incoming ๐ช.
Any improvement ideas are welcome, feel free to create issues for evolutions/bugs on the repository of the project.