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CalcHive

Formatters & Beautifiers

Format, beautify, and minify code in JSON, XML, SQL, HTML, CSS, JavaScript, and more.

8 free tools available

Clean, well-structured code and data are essential for productive development workflows. Our free online formatters let you instantly beautify, pretty-print, or minify JSON, XML, HTML, CSS, JavaScript, SQL, and other popular formats. Whether you are reviewing an API response, cleaning up a configuration file, or preparing code for a pull request, these tools help you achieve consistent, readable formatting in seconds.

Why Code Formatting Matters

Consistent formatting is not just about aesthetics. Well-formatted code reduces cognitive load during code reviews, makes merge conflicts easier to resolve, and helps teams maintain a shared coding style without manual enforcement. Minified production code is smaller and faster to transmit, directly improving page load times and bandwidth costs. Whether you are formatting for readability during development or minifying for deployment, having quick access to formatting tools speeds up your workflow.

Supported Formats

Our formatters cover the most common data and code formats used in web development and software engineering. JSON formatting is essential for working with API responses, configuration files, and data exchange. HTML formatting helps structure markup with proper indentation for templates and components. CSS formatting organizes stylesheets with consistent spacing and rule grouping. JavaScript formatting applies indentation and line breaks to make scripts readable. SQL formatting structures database queries with aligned keywords and proper nesting. XML and YAML formatters handle configuration and data files used across platforms.

Formatting vs Minification

Formatting (beautifying) adds whitespace, indentation, and line breaks to make code human-readable. Minification removes all unnecessary characters to reduce file size for production. Many of our tools offer both modes, so you can switch between development and production formats with a single click. For production deployments, minification of HTML, CSS, and JavaScript can reduce file sizes by 30-60%, resulting in faster page loads and lower hosting costs. Use our formatters during development and testing, then minify before deploying.

JSON Formatter & Beautifier
Popular
Format, beautify, and validate JSON
JSON to TypeScript
Convert JSON to TypeScript interfaces
Markdown Preview
Live Markdown to HTML preview
SQL Formatter & Beautifier
Format and beautify SQL queries
XML Formatter & Validator
Format, beautify, and validate XML
HTML Formatter & Beautifier
Format and minify HTML code
CSS Formatter & Beautifier
Format and minify CSS code
JavaScript Formatter & Beautifier
Format and minify JavaScript code

Frequently Asked Questions

Why should I format my code or data?▾
Properly formatted code and data are significantly easier to read, debug, and maintain. Consistent formatting helps teams collaborate effectively by reducing confusion and merge conflicts. For data formats like JSON and XML, formatting (also called pretty-printing) makes nested structures visible at a glance, which speeds up troubleshooting and validation.
Do these formatters modify the actual content of my data?▾
No. Our formatting tools only change whitespace, indentation, and line breaks to improve readability. The underlying data, values, and structure remain completely unchanged. What goes in is exactly what comes out, just presented in a cleaner, more organized way.
Can I minify code as well as format it?▾
Yes. Several of our formatter tools offer both beautify (pretty-print) and minify options. Minification removes unnecessary whitespace, comments, and line breaks to reduce file size, which is useful for optimizing web assets for production deployment. You can switch between formatted and minified output with a single click.
What programming languages and data formats are supported?▾
Our collection includes formatters for the most widely used formats in web development and software engineering, including JSON, XML, HTML, CSS, JavaScript, SQL, and YAML. Each tool is purpose-built for its specific format, ensuring accurate parsing and standards-compliant output.
Is there a size limit on the input I can format?▾
Since all formatting is performed in your browser, the practical limit depends on your device's available memory and processing power. Most users can comfortably format files up to several megabytes in size. For extremely large files, you may experience slower processing, and we recommend using a local IDE or command-line tool for those cases.