Code Beautifier
Format and beautify JavaScript, CSS, and HTML code instantly. Add proper indentation, line breaks, and spacing. Make your code readable and maintainable. All processing happens locally in your browser.
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Add this tool to your website with customizable styling
How to Use
Select your language
Choose between JavaScript, CSS, or HTML. The tool will apply the appropriate formatting rules for each language.
Configure formatting options
Choose your preferred indent size (2 or 4 spaces) or tabs. For HTML, you can also set line wrap length and preserve newlines options.
Paste or upload your code
Paste your minified or messy code directly into the input area, or drag and drop a file. The tool automatically detects the file type when you upload.
Copy or download the formatted code
The beautified code appears instantly in the output panel. Click "Copy" to copy to clipboard, or "Download" to save as a file.
Frequently Asked Questions
What is code beautification?
Code beautification (also called prettifying or formatting) is the process of adding proper indentation, line breaks, and spacing to make code more readable. It's the opposite of minification. Beautified code is easier to read, understand, debug, and maintain. It follows consistent style conventions that make collaboration smoother.
Should I use 2 spaces or 4 spaces for indentation?
This is largely a matter of preference and team convention. 2 spaces is popular in JavaScript/TypeScript projects and keeps lines shorter. 4 spaces is common in Python and Java, providing clearer visual hierarchy. Tabs let each developer configure their preferred visual width. The most important thing is consistency—pick one style and stick with it across your project.
Can I beautify minified code?
Yes! This tool is perfect for making minified code readable again. However, keep in mind that minification often removes variable names and replaces them with shorter alternatives—these won't be restored to their original meaningful names. The structure and formatting will be fixed, but semantic meaning may be lost from aggressive minification.
Is my code safe?
Yes! All processing happens locally in your browser—your code never leaves your device. We use js-beautify, a well-established open-source library trusted by millions of developers. No data is sent to any server, and nothing is stored. Your code remains completely private.
What's the difference between this and Prettier?
Both are code formatters, but they work differently. Prettier is an opinionated formatter with fewer configuration options—it makes most formatting decisions for you. js-beautify (used here) offers more control over the output. For quick one-off formatting, this tool is perfect. For consistent project-wide formatting in your codebase, consider integrating Prettier into your build process.