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Formatters

Format and beautify code: JSON, SQL, HTML, CSS, JS, XML

33tools

All 33 formatters run entirely in your browser — your code is never sent to a server. Each tool supports instant formatting with configurable indentation, syntax highlighting, and one-click clipboard copy. The JSON, YAML, XML and TOML formatters also include interactive tree view and D3-powered graph view so you can explore nested data structures visually.

33 tools

JSON Formatter

Format and pretty-print JSON online. Instant beautification with syntax highlighting.

SQL Formatter

Format SQL queries instantly — supports MySQL, PostgreSQL, standard SQL and more.

HTML Formatter

Format and indent HTML markup instantly — clean, readable code output.

CSS Formatter

Format and beautify CSS stylesheets with proper indentation and structure.

JavaScript Formatter

Format and beautify JavaScript code online. Supports ES6+ syntax.

TypeScript Formatter

Format and beautify TypeScript code online. Clean, consistently indented output.

XML Formatter

Format and pretty-print XML documents with proper indentation.

YAML Formatter

Format and validate YAML online — configurable indent, key sorting, and clear parse errors.

GraphQL Formatter

Format and pretty-print GraphQL queries, mutations, subscriptions and schema definitions.

SCSS Formatter

Format and beautify SCSS stylesheets with proper indentation — powered by Prettier.

Less Formatter

Format and beautify Less stylesheets with proper indentation — powered by Prettier.

JSX Formatter

Format and beautify JSX (React) code online — clean, readable component output.

TSX Formatter

Format and beautify TSX (TypeScript React) code online — clean, typed component output.

CSV Formatter

Parse, preview and convert CSV data — auto-detects delimiter, table view, and export to JSON.

JavaScript Obfuscator

Obfuscate and protect JavaScript code — Low, Medium and High presets with control flow flattening, string encoding and more

JavaScript Minifier

Minify and compress JavaScript files online — reduce file size instantly.

CSS Minifier

Minify and compress CSS stylesheets online — shrink file size for production.

HTML Minifier

Minify and compress HTML markup online — reduce file size for faster page loads.

JSON Minifier

Minify JSON data by removing whitespace — compact output ready for production.

TypeScript Minifier

Minify and compress TypeScript files online — strips types and reduces file size instantly.

JSX Minifier

Minify and compress JSX (React) files online — reduce bundle size instantly.

TSX Minifier

Minify and compress TSX (TypeScript React) files online — reduce bundle size instantly.

SCSS Minifier

Minify and compress SCSS stylesheets — source-level compression for production.

Less Minifier

Minify and compress Less stylesheets — source-level compression for production.

SVG Minifier

Minify and compress SVG files

SCSS Compiler

Compile SCSS / Sass to plain CSS instantly in the browser

Less Compiler

Compile Less stylesheets to plain CSS instantly in the browser

Java Formatter

Format and beautify Java code online — Google Java Style, configurable indent. Powered by clang-format WASM.

Python Formatter

Format Python code online — Black-compatible output, configurable indent and line length. Powered by Ruff WASM.

TOML Formatter

Format and validate TOML configuration files with interactive tree view. Powered by smol-toml.

C# Formatter

Format and beautify C# source code online. Uses clang-format with Microsoft style for clean, consistent .NET code.

Go Formatter

Format and beautify Go (Golang) source code in your browser. Produces clean, idiomatic Go with correct indentation and spacing.

PHP Formatter

Format and beautify PHP source code online. Supports pure PHP files and mixed HTML + PHP templates with configurable indent size.

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Converters64Security15Encoders & Decoders8UI Tools12Diagrams7Text & String11Numbers & Dates5Image & Media6Web & SEO6Developer Tools12DevOps & Network3Form Generators6Validators1

About Formatters

This collection covers every common formatting, minification, compilation, and obfuscation task a developer encounters. All 33 tools run 100% client-side — no server round-trips, no file uploads, no account required. Paste your code, click a button, and get clean output instantly.

Features

  • ✓Formatters for 18 languages — JSON, SQL, HTML, CSS, JavaScript, TypeScript, XML, YAML, Java, Python, TOML, GraphQL, SCSS, Less, JSX, TSX, C#, Go, PHP and Bash
  • ✓JSON, YAML, XML and TOML formatters include interactive collapsible tree view and D3 graph view for exploring nested data
  • ✓Minifiers for 10 targets — JavaScript, TypeScript, CSS, SCSS, Less, HTML, JSON, JSX, TSX and SVG
  • ✓SCSS and Less compilers that produce plain CSS directly in the browser using sass.js and less.js
  • ✓JavaScript Obfuscator with Low, Medium and High presets — control flow flattening, string encoding, dead code injection
  • ✓CSV Formatter with auto-delimiter detection, header toggle, table preview and one-click JSON export
  • ✓Configurable indentation (2 spaces, 4 spaces, tabs) on all formatter tools
  • ✓One-click copy-to-clipboard and download for every output panel
  • ✓Monaco Editor with full syntax highlighting, error squiggles and keyboard shortcuts
  • ✓Language picker on every tool — switch between related languages without leaving the page

Common Use Cases

  • Format Java source code online using Google Java Style — powered by clang-format WASM, no install required
  • Format Python code online with Black-compatible output — powered by Ruff WASM, runs 100% in your browser
  • Format C# source code online with Microsoft C# style — powered by clang-format WASM, no .NET SDK required
  • Format Go (Golang) source code online — idiomatic formatting with correct :=, channel, and goroutine syntax
  • Format PHP files online — pure PHP and mixed HTML + PHP templates, supports modern PHP 8.x syntax
  • Format Bash and shell scripts online — powered by prettier-plugin-sh, consistent and readable output
  • Validate and format TOML config files (Cargo.toml, pyproject.toml) with tree and graph visualisation
  • Prettify minified API responses or production bundles for quick debugging
  • Compress JS, CSS and HTML before deployment to reduce page load times
  • Compile SCSS or Less stylesheets on the fly without a local build step
  • Obfuscate client-side JavaScript to protect proprietary logic before shipping
  • Validate and canonicalise YAML configuration files (Kubernetes, CI/CD pipelines, Helm charts)
  • Explore deeply-nested JSON or XML from REST/GraphQL APIs using the tree or graph view
  • Format GraphQL queries and schema definitions before committing to version control
  • Convert CSV exports from spreadsheets to JSON for use in JavaScript applications

Frequently Asked Questions

QAre my code and data sent to a server?

No. Every tool in this category runs entirely inside your browser using WebAssembly or pure JavaScript libraries. Nothing you paste is ever transmitted to any server.

QWhich formatter should I use for React / Next.js code?

Use the JSX Formatter for .jsx files and the TSX Formatter for .tsx files. Both are powered by Prettier and support the full React JSX syntax including fragments, hooks, and generics.

QHow does the Java Formatter work?

The Java formatter uses clang-format compiled to WebAssembly with Google Java Style. It runs entirely in your browser — no Java runtime, no server, no install needed.

QHow does the Python Formatter work?

The Python formatter uses Ruff compiled to WebAssembly. Ruff produces Black-compatible output and is the fastest Python formatter available. It runs 100% in your browser.

QHow does the C# Formatter work?

The C# formatter uses clang-format compiled to WebAssembly with the Microsoft C# style preset. It runs entirely in your browser — no Visual Studio, .NET SDK, or any server required.

QHow does the Go Formatter work?

The Go formatter applies idiomatic gofmt-style formatting in the browser, correctly handling short variable declarations (:=), goroutines, channel operators, and struct literals.

QDoes the PHP Formatter support mixed HTML and PHP files?

Yes. The PHP formatter handles both pure PHP files and mixed HTML + PHP templates. It uses smart token-stashing to preserve PHP blocks while reformatting the surrounding HTML.

QHow does the Bash / Shell Formatter work?

The Bash formatter uses prettier-plugin-sh, the same engine behind shfmt’s Prettier integration. It works with bash, sh, and POSIX shell dialects.

QWhat is the TOML Formatter used for?

TOML (Tom's Obvious Minimal Language) is used for Rust Cargo.toml, Python pyproject.toml, Hugo and other config files. The formatter validates and re-serialises your TOML with a tree view and D3 graph for exploring config structure.

QWhat is the difference between a formatter and a minifier?

A formatter (beautifier) adds indentation, line breaks and consistent spacing to make code readable. A minifier does the opposite — it removes all unnecessary whitespace and shortens identifiers to produce the smallest possible output for production.

QCan I compile SCSS or Less without installing Node.js?

Yes. The SCSS Compiler uses sass.js (compiled to WebAssembly) and the Less Compiler uses less.js — both run entirely in the browser with no local toolchain required.

QHow does the JavaScript Obfuscator work?

It uses the javascript-obfuscator library compiled for the browser. The Low preset renames identifiers and encodes strings. Medium adds control flow flattening and Base64 encoding. High adds dead code injection and RC4 string encoding for maximum protection.

QDoes the JSON formatter support very large files?

The Monaco Editor handles files up to a few megabytes comfortably in-browser. For very large JSON files (10 MB+) you may notice slower rendering, but the tree view includes virtual-scroll to keep it usable.

See Also

  • Java FormatterFormat Java code with Google Java Style — powered by clang-format WASM
  • Python FormatterFormat Python code with Black-compatible output — powered by Ruff WASM
  • TOML FormatterValidate and format TOML config files with tree view and graph view
  • C# FormatterFormat C# code with Microsoft style — powered by clang-format WASM
  • Go FormatterFormat Go / Golang source code in your browser
  • PHP FormatterFormat pure PHP and mixed HTML + PHP templates
  • Format ConverterConvert between JSON, YAML, XML, TOML, CSV, SQL and Markdown
  • JSON FormatterFormat and pretty-print JSON with tree and graph view
  • JavaScript MinifierMinify and compress JS files for production
  • SCSS CompilerCompile SCSS / Sass to plain CSS in the browser
  • JavaScript ObfuscatorProtect JS code with Low, Medium and High obfuscation presets
  • YAML FormatterValidate and format YAML with configurable indent and key sorting
  • CSV FormatterParse, preview and convert CSV with auto-delimiter detection
  • GraphQL FormatterFormat GraphQL queries, mutations and schema definitions
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