HTML, CSS & JS Formatter (Prettier, Beautify, Minify)
Bring well-formatted snippets to docs, blog posts, and pull requests with an in-browser formatter powered by Prettier.
Prettify front-end snippets without installing CLI tools.
Start formatting your code instantly without installing heavy CLI tools or VS Code extensions. This online code formatter uses the official **Prettier** engine directly in your browser to beautify HTML, CSS, and JavaScript. Whether you are cleaning up a messy snippet for a blog post, normalizing code for a pull request, or just learning standard indentation, this tool delivers consistent, opinionated formatting in milliseconds. Paste your minified or ugly code, select the language, and get a clean, readable result ready to copy.
How this page is maintained
- Steps and copy are checked against the current tool behavior.
- Browser limits, file-size constraints, or compatibility gaps are documented when relevant.
- Unless a page explicitly says otherwise, files and text stay in the browser during processing.
Clean Code Without the Compromises
Formatting code manually is a repetitive waste of time. Whether you are dealing with legacy "spaghetti code", debugging a aggressively minified script dumped from a CDN, or preparing a clean snippet for Stack Overflow, standardizing your indentation is the first step to understanding logic.
Powered by the Real Prettier Engine
Instead of relying on fragile regex replacements, we compiled the industry-standard Prettier engine (trusted by Meta, Vercel, and Shopify) to run directly inside your browser via WebAssembly and JavaScript. This means you get the exact same opinionated, consistent styling that professional teams use in VS Code—with zero configuration required.
What does "Opinionated" mean?
An "opinionated" formatter makes the hard decisions for you. Instead of arguing with your team about whether to use tabs or spaces, or where to put the opening bracket of a long function, Prettier mathematically enforces a consistent style. This completely eliminates "style wars" in pull requests and lets teams focus exclusively on business logic.
True Local Execution for IP Security
Pasting proprietary, unreleased algorithms or hardcoded vendor secrets into a random online formatter is a critical security risk. Our formatter executes 100% locally. The structural parsing happens in your local RAM, guaranteeing your codebase never touches a remote server.
Key features
- Standardized Prettier Styling: We use the same defaults as the industry-standard Prettier engine, ensuring your code looks professional and matches modern style guides automatically.
- Privacy-First Formatting: Your proprietary code logic never leaves your machine. The formatting engine loads once and runs 100% locally—safe for sensitive client work.
- Instant Minification Reversal: Turned a minified `style.min.css` or `bundle.js` back into readable code? Just paste it here to restore indentation and line breaks instantly.
Frequently asked questions
Does this support React (JSX)?
Currently, we support standard JS, HTML, and CSS. For JSX/React, we are working on adding Babel support soon.
Can I customize the indentation (tabs vs spaces)?
To keep things simple and opinionated (like Prettier), we default to 2 spaces, which is the standard for most modern web projects.
Why does my code look different after formatting?
Prettier is "opinionated," meaning it enforces a consistent style (like max line length and wrapping) to end debates about code style.
Is this the same as running Prettier locally?
Yes. It wraps Prettier standalone with the official Babel, HTML, and PostCSS parsers so the output matches your builds.
Does formatting happen online?
Everything happens in your browser tab. No snippets are sent to a server or stored anywhere.
Can I format TypeScript or React components?
The current version targets vanilla HTML, CSS, and JavaScript. More languages can be added based on demand.