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# prettyjson [](http://travis-ci.org/rafeca/prettyjson) [](http://badge.fury.io/js/prettyjson) [](https://coveralls.io/r/rafeca/prettyjson?branch=master) Package for formatting JSON data in a coloured YAML-style, perfect for CLI output. ## How to install Just install it via NPM: ```bash $ npm install -g prettyjson ``` This will install `prettyjson` globally, so it will be added automatically to your `PATH`. ## Using it (from the CLI) This package installs a command line interface to render JSON data in a more convenient way. You can use the CLI in three different ways: **Decode a JSON file:** If you want to see the contents of a JSON file, just pass it as the first argument to the CLI: ```bash $ prettyjson package.json ```  **Decode the stdin:** You can also pipe the result of a command (for example an HTTP request) to the CLI to see the JSON result in a clearer way: ```bash $ curl https://api.github.com/users/rafeca | prettyjson ```  **Decode random strings:** if you call the CLI with no arguments, you'll get a prompt where you can past JSON strings and they'll be automatically displayed in a clearer way:  ### Command line options It's possible to customize the output through some command line options: ```bash # Change colors $ prettyjson --string=red --keys=blue --dash=yellow --number=green package.json # Do not use colors $ prettyjson --nocolor=1 package.json # Change indentation $ prettyjson --indent=4 package.json # Render arrays elements in a single line $ prettyjson --inline-arrays=1 package.json ``` **Deprecation Notice**: The old configuration through environment variables is deprecated and it will be removed in the next major version (1.0.0). ## Using it (from Node.js) It's pretty easy to use it. You just have to include it in your script and call the `render()` method: ```javascript var prettyjson = require('prettyjson'); var data = { username: 'rafeca', url: 'https://github.com/rafeca', twitter_account: 'https://twitter.com/rafeca', projects: ['prettyprint', 'connfu'] }; var options = { noColor: true }; console.log(prettyjson.render(data, options)); ``` And will output:  You can also configure the colors of the hash keys and array dashes (using [colors.js](https://github.com/Marak/colors.js) colors syntax): ```javascript var prettyjson = require('prettyjson'); var data = { username: 'rafeca', url: 'https://github.com/rafeca', twitter_account: 'https://twitter.com/rafeca', projects: ['prettyprint', 'connfu'] }; console.log(prettyjson.render(data, { keysColor: 'rainbow', dashColor: 'magenta', stringColor: 'white' })); ``` Will output something like:  ## Running Tests To run the test suite first invoke the following command within the repo, installing the development dependencies: ```bash $ npm install ``` then run the tests: ```bash $ npm test ``` On windows, you can run the tests with: ```cmd C:\git\prettyjson> npm run-script testwin ```