Beautifier
beautifier.io
Online JavaScript beautifier
Chrome, in case the built-in CSS and javascript formatting isn't enough for you: — Quick source viewer by Tomi Mickelsson (github, blog), — Javascript and CSS Code beautifier by c7sky, — jsbeautify-for-chrome by Tom Rix (github), — Pretty Beautiful JavaScript by Will McSweeney — Stackoverflow Code Beautify by Making Odd Edit Studios (github).
FreeFormatter
freeformatter.com › javascript-beautifier.html
Free Online Javascript Beautifier / Formatter - FreeFormatter.com
This free online tool lets you beautify/format your JavaScript code with no side effects.
Videos
06:02
JavaScript #12 Comments and Prettier Code Formatter - YouTube
10:21
Formatting Is So Easy With The Intl JavaScript API - YouTube
16:26
Formatting JS code with prettier - part 1: the editor - YouTube
11:20
How to Format Code Automatically with Prettier and VS Code - YouTube
01:32
The BEST Way To Format Lists in JavaScript - YouTube
20:35
Create Your Own JSON Formatter with JavaScript (Prettify/Minify) ...
What does a JavaScript Formatter / Beautifier do?
A JavaScript Formatter (or Beautifier) takes JavaScript code, regardless of its initial spacing or indentation, and automatically rewrites it to follow consistent style rules. This involves adjusting indentation, line breaks, spacing around operators, and other stylistic elements to make the code neat and easy to read without changing its functionality.
codeshack.io
codeshack.io › javascript-formatter
JavaScript Formatter - Beautify and Format JS Code Online
Why should I use a JavaScript beautifier instead of formatting manually? a
A JavaScript beautifier speeds up your workflow by automatically applying consistent indentation, spacing, and line breaks. It reduces human error, improves readability, and makes debugging faster—especially when working in a team.
roxunlimited.com
roxunlimited.com › js-beautifier
Beautify JavaScript Code Online | Free JS Beautifier - roxunlimited
Does the ROX JS Beautifier support large JavaScript files? a
Yes. Whether you have a small snippet or a large production-level JavaScript file, the tool can handle it efficiently, ensuring consistent formatting across your entire codebase.
roxunlimited.com
roxunlimited.com › js-beautifier
Beautify JavaScript Code Online | Free JS Beautifier - roxunlimited
Word to HTML
wordtohtml.net › html › prettify-format
Free Online HTML, CSS and JavaScript Code Prettifier & Formatter
Easily prettify, format, and indent your HTML, CSS, and JavaScript code online. Paste, load from file, or type your code and use our tool to clean up and beautify your markup for better readability.
CodeShack
codeshack.io › javascript-formatter
JavaScript Formatter - Beautify and Format JS Code Online
Format and beautify your JavaScript code online. Paste messy JS or load a file, choose indentation, and get clean, readable code instantly.
JSON Formatter
jsonformatter.org › jsbeautifier
Best JSBeautifier to beautify / format JavaScript
Javascript Beautifier Online helps to Edit, View, Analyse Javascript data along with beautify and formatting Javascript data. It's the very simple and easy way to Edit Javascript Data and Share with others.
@url-decode.com
url-decode.com › tool › javascript-beautifier
Online JavaScript Beautifier and Formatter
With an online JavaScript (JS) beautifier & formatter tool, format your ugly JavaScript strings to an organized and readable pattern.
roxunlimited
roxunlimited.com › js-beautifier
Beautify JavaScript Code Online | Free JS Beautifier - roxunlimited
Use our free online JavaScript beautifier to quickly clean and format your messy JS code. Whether you're debugging, reviewing, or preparing code for production, our online code formatter helps you beautify JavaScript with just one click.
HTML Cleaner
html-cleaner.com › js
JavaScript Cleaner - Free online JS Beautifier
End script and style with new line Detect packers and obfuscators Space after conditional "if" Support XML-like syntax Comma-first list style Sustain array indentation Break lines on chained methods Unescape encoded printable chars Use JSLint formatting Indent <head> and <body> ... Always keep a backup and verify your code before publishing! We use cookies to collect anonymous visitor analytics and to show personalized ads. This website doesn't send your code to the server and doesn't save it. We use cookies to improve user experience. Please report if you find an error or you have any suggestion. This free online JavaScript code beautifier and cleaner tool allows you to tidy and optimize your code.
Minifier
minifier.org › javascript-beautifier
Minify JS and CSS online, or include the minifier in your project for on-the-fly compression.
Use our online JavaScript Beautifier to clean, format, and structure your code. Improve readability, fix indentation, and beautify JS quickly.
Biome
biomejs.dev
Biome, toolchain of the web
Biome is a fast formatter for JavaScript, TypeScript, JSX, TSX, JSON, HTML, CSS and GraphQL that scores 97% compatibility with Prettier, saving CI and developer time.
Prettier
prettier.io
Prettier · Opinionated Code Formatter · Prettier
Try It OnlineInstall Prettier · Limited edition tshirts are now available to buy! $10 per tshirt goes to maintain the project. An opinionated code formatter · Supports many languages · Integrates with most editors · Has few options » · Your code is formatted on save · No need to discuss style in code review · Saves you time and energy · And more » · JavaScript · JSX ·
Toolsina
toolsina.com › js-formatter
JavaScript Formatter - Beautify JS Code Online
Format and beautify your JavaScript code online. Clean and readable JS output instantly with our free JS formatter.
Static.app
static.app › js-formatter
Online JS Formatter
Format JavaScript code online with our free JS Formatter. Organize and clean up your JavaScript files for better readability and easier maintenance.
LambdaTest
lambdatest.com › home › free tools › javascript formatter & beautifier
JavaScript Formatter & Beautifier Online | LambdaTest
Tired of messy JavaScript code? Make your JavaScript code visually appealing with our JavaScript formatter and beautifier tool. Get beautifully formatted code effortlessly.
Scaler
scaler.com › topics › javascript › javascript-formatter
Online JavaScript Formatter and Beautifier
Online JavaScript (JS) Formatter - Transform messy JavaScript (JS) code into clean, readable code with this JavaScript Beautifier tool, saving time and effortlessly improving code quality.
Webinovers Web Tools
webinovers.com › web-tools › online-javascript-beautifier
Online JavaScript beautifier | Webinovers Web Tools
Online JavaScript beautifier takes ugly and minified javascript and make it clean, well-formatted code. It gives the code proper indentation, newlines, spaces to make it easier to read.
Formatter.org
formatter.org › javascript-formatter
JavaScript Formatter, JavaScript Beautifier Online - formatter.org
JavaScript Formatter helps to format and beautify JavaScript code for better readability and maintainability.
Labnol
labnol.org › beautifier
Online Code Beautifier for JavaScript, JSON, HTML, CSS and PHP
The beautifier can understand and format source code of all the popular languages including JavaScript, JSON, Python, HTML, XML, CSS, and PHP.
GeeksforGeeks
geeksforgeeks.org › utilities › javascript-formatter
Online Free JavaScript Formatter and Beautifier - GeeksforGeeks
July 23, 2025 - This free Online Javascript Formatter/Beautifier allows you to edit, view, analyze, beautify, and format JavaScript codes.