alfred-coder 
Coder - Encode/decode input to clipboard (Alfred 4)
Install
$ npm install --global alfred-coder
Requires Node.js 8+ and the Alfred Powerpack.
Usage
In Alfred, type coder, Enter and your query.
Additionally, you may configure an hotkey for Coder in Alfred, which gives you the ability to select a text in any app, hit your hotkey to pass the selected text directly to Coder.
By default, Coder encodes the query through the following coders:
- URI
- URI Component
- HTML Entities
- Base64
To decode the selected result press ⌘.
License
MIT License
Tamio Honma
https://www.honma.de