JSON.stringify's third parameter defines white-space insertion for pretty-printing. It can be a string or a number (number of spaces). Node can write to your filesystem with fs. Example:
var fs = require('fs');
fs.writeFile('test.json', JSON.stringify({ a:1, b:2, c:3 }, null, 4));
/* test.json:
{
"a": 1,
"b": 2,
"c": 3,
}
*/
See the JSON.stringify() docs at MDN, Node fs docs
Answer from Ricardo Tomasi on Stack Overflownpm
npmjs.com › package › pretty-print-json
pretty-print-json - npm
February 27, 2026 - Latest version: 3.0.7, last published: a month ago. Start using pretty-print-json in your project by running `npm i pretty-print-json`. There are 13 other projects in the npm registry using pretty-print-json.
» npm install pretty-print-json
Top answer 1 of 8
1137
JSON.stringify's third parameter defines white-space insertion for pretty-printing. It can be a string or a number (number of spaces). Node can write to your filesystem with fs. Example:
var fs = require('fs');
fs.writeFile('test.json', JSON.stringify({ a:1, b:2, c:3 }, null, 4));
/* test.json:
{
"a": 1,
"b": 2,
"c": 3,
}
*/
See the JSON.stringify() docs at MDN, Node fs docs
2 of 8
245
I think this might be useful... I love example code :)
var fs = require('fs');
var myData = {
name:'test',
version:'1.0'
}
var outputFilename = '/tmp/my.json';
fs.writeFile(outputFilename, JSON.stringify(myData, null, 4), function(err) {
if(err) {
console.log(err);
} else {
console.log("JSON saved to " + outputFilename);
}
});
Videos
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How to Work with JSON Files in Node.js | Read, Write, and Update ...
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Node.js tutorial part 05 - the JSON format, JSON files - YouTube
How to Pretty Print JSON | React Tutorial
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How to Pretty-Print JSON in JavaScript | Simple Guide - YouTube
00:26
curl Prettify JSON on Windows with NodeJS tool #json #restapis ...
npm
npmjs.com › search
json beautify - npm search
plugin to pretty-print or minify XML, JSON, CSS and SQL files · pretty print · beautify · minify · XML · JSON · CSS · SQL · • 0.40.0 • 14 years ago • 279 dependents • MITpublished version 0.40.0, 14 years ago279 dependents licensed ...
Research Hubs
researchhubs.com › post › computing › javascript › pretty-print-json.html
Pretty print JSON in Node.js - Research hubs
When you read a JSON file, change the key or value, and write back to the same file, you will lose the JSON formatting. ... Here is a way to pretty print JSON using JSON.stringify. JSON.stringify accepts a third parameter which defines white-space insertion. It can be a string or a number (number of spaces).
npm
npmjs.com › package › prettyjson
prettyjson - npm
January 11, 2022 - 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: It's possible to customize the output through some command line options: # Change colors $ prettyjson --string=red --multiline_string=cyan --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 # Escape conflictive strings $ prettyjson --escape=1 package.json
» npm install prettyjson
Published Jan 11, 2022
Version 1.2.5
Author Rafael de Oleza
Repository https://github.com/rafeca/prettyjson
Homepage http://rafeca.com/prettyjson
npm
npmjs.com › package › pretty-format
pretty-format - npm
1 month ago - That limitation of the original print interface is a reason to use the improved serialize interface, described above. prettyFormat(val, { plugins: [pluginOld], printFunctionName: false, }); /* Object { "onClick": [Function onClick 1], "render": [Function render 0], } */ prettyFormat(val, { printFunctionName: false, }); /* Object { "onClick": [Function], "render": [Function], } */
» npm install pretty-format
npm
npmjs.com › package › react-json-pretty
react-json-pretty - npm
A code formatting tool for raw json data. Latest version: 2.2.0, last published: 6 years ago. Start using react-json-pretty in your project by running `npm i react-json-pretty`. There are 124 other projects in the npm registry using react-json-pretty.
» npm install react-json-pretty
Published Oct 14, 2019
Version 2.2.0
Author chenckang@gmail.com
GitHub
github.com › center-key › pretty-print-json
GitHub - center-key/pretty-print-json: 🦋 Pretty-print JSON data into HTML to indent and colorize (with TypeScript declarations)
Or to automatically sense dark mode based on the prefers-color-scheme CSS media feature, use pretty-print-json.prefers.css instead. Install package for node: $ npm install pretty-print-json ·
Starred by 140 users
Forked by 27 users
Languages TypeScript 61.4% | Shell 38.6% | TypeScript 61.4% | Shell 38.6%
W3Schools
w3schools.io › file › json-nodejs-examples
NodeJS read,write and pretty print JSON file and object example - w3schools
returned pretty print json object before parsing json content using JSON object · prettier is a code formatter that has support for major programming languages. First, Install a prettier npm library · npm install prettier --save-dev · Here is a code for Prettier to format json ·
npm
npmjs.com › search
pretty-print - npm search
Librarie to format js/json objects into a YAML-style colored output. Especially useful to pretty print logs.
jsDelivr
jsdelivr.com › package › npm › pretty-print-json
pretty-print-json CDN by jsDelivr - A CDN for npm and GitHub
October 23, 2025 - Pretty-print JSON data into HTML to indent and colorize (written in functional TypeScript) Version 3.0.6 License MIT · Keywords · colorformathtmljavascriptjsonpretty-printpretty-print-jsontypescript · INSTALL · Version: Static · Static · Latest Patch ·
Published Nov 18, 2018
Nulldog
nulldog.com › pretty-print-json-in-nodejs
Pretty Print JSON in Node.js
pretty-print-json - npm | Pretty-print JSON data into HTML to indent and colorize (written in functional TypeScript). Latest version: 3.0.2, last published: 20 days ago. Start using pretty-print-json in your project by running npm i pretty-print-json.
Jamie Tanna
jvt.me › posts › 2019 › 01 › 11 › pretty-printing-json-node-cli
Pretty Printing JSON using Node.JS on the Command Line · Jamie Tanna | Software Engineer
January 11, 2019 - Using Node.JS's JSON module to pretty print JSON objects from the command line.
GitHub
github.com › Cerlancism › pretty-color-json-cli
GitHub - Cerlancism/pretty-color-json-cli: A NodeJS command line utility to pretty print JSON string like an object literal to the terminal with color.
A NodeJS command line utility to pretty print JSON string like an object literal to the terminal with color. - Cerlancism/pretty-color-json-cli
Author Cerlancism
npm
npmjs.com › package › json-stringify-pretty-compact
json-stringify-pretty-compact - npm
May 14, 2022 - JSON · stringify · pretty · print · pretty-print · compact · indent · format · formatter · npm i json-stringify-pretty-compact · github.com/lydell/json-stringify-pretty-compact · github.com/lydell/json-stringify-pretty-compact#readme · 4,487,206 · 4.0.0 ·
» npm install json-stringify-pretty-compact
Published May 14, 2022
Version 4.0.0
Author Simon Lydell
npm
npmjs.com › search
pretty-json-formatter - npm search
Converts a XML string into a human readable format (pretty print) while respecting the xml:space attribute ... chrisbottin• 3.7.0 • 5 days ago • 329 dependents • MITpublished version 3.7.0, 5 days ago329 dependents licensed under $MIT ...
Example Code
example-code.com › nodejs › json_pretty_print.asp
Node.js Pretty Print JSON (Formatter, Beautifier)
Chilkat HOME Android™ AutoIt C C# C++ Chilkat2-Python CkPython Classic ASP DataFlex Delphi DLL Go Java Node.js Objective-C PHP Extension Perl PowerBuilder PowerShell PureBasic Ruby SQL Server Swift Tcl Unicode C ...
Coderwall
coderwall.com › p › z3efga › pretty-print-json-from-command-line-with-nodejs
Pretty print JSON from command line with NodeJS (Example)
March 7, 2016 - #!/usr/bin/env node var args = process.argv.splice( /node$/.test(process.argv[0]) ? 2 : 1 ); console.log( JSON.stringify( JSON.parse( require('fs') .readFileSync( args.length > 0 ?
npm
npmjs.com › search
pretty json - npm search
JSON/CJSON/JSON5 parser, syntax and schema validator and pretty-printer.
Npm
npm.io › search › keyword:pretty-print
Pretty-print | npm.io
beautifybeautify-jsbeautify-js... values. react-componentpretty-printlogdebug2.1.1 • Published 10 years ago · Function to pretty-print an object with an ability to annotate every value....