# Code Formatters - 8 Free Online Tools

> Format, validate, and beautify code in any language. Our free online formatters support JSON, HTML, SQL, CSS, YAML, and more. All processing happens in your browser - your code never leaves your device.

Browse all 8 free online code formatters on DevTools Hub.

URL: https://tools.scoreroute.com/tools/formatters/

## Frequently Asked Questions

**Which languages and formats are supported?**

Seven formatters cover JSON, HTML, CSS, SQL, YAML, XML, and JSON Schema (Draft-07, 2019-09, 2020-12). All run in the browser; no code is uploaded.

**What is the difference between beautify and minify?**

Beautify adds consistent indentation and line breaks to make code human-readable. Minify removes whitespace, comments, and optional tokens to shrink the file size for production. Most formatters offer both modes.

**How large a file can I format?**

In practice files up to several megabytes format instantly because the work is done in the browser. Files larger than that may slow down the page or hit browser memory limits; for very large files use a CLI tool.

**Is my code sent to a server?**

No. The formatters are pure JavaScript that run locally in your browser. Your code, schemas, and data never leave your device.

## Tools in this category

- [CSS Formatter & Validator - Beautify & Minify CSS Online](https://tools.scoreroute.com/tools/css-formatter/): Free online CSS formatter and validator. Beautify messy CSS, minify for production, fix syntax errors. Instant results, no signup required.
- [Free YAML Validator - Validate & Format YAML Online](https://tools.scoreroute.com/tools/yaml-validator/): Free YAML validator and formatter. Validate YAML syntax, fix errors with line numbers, and format YAML for better readability. No signup required.
- [HTML Formatter - Format & Beautify HTML](https://tools.scoreroute.com/tools/html-formatter/): Free HTML formatter. Format, prettify and beautify HTML code with proper indentation and validation.
- [JS Formatter & Beautifier - JavaScript Code Beautify Online](https://tools.scoreroute.com/tools/js-formatter/): Free JavaScript formatter and beautifier. Beautify messy JS, minify for production, validate syntax. No signup, 100% private browser processing. AI cannot format code - we use deterministic js-beautify engine.
- [JSON Formatter - Format & Validate JSON](https://tools.scoreroute.com/tools/json-formatter/): Free JSON formatter. Format, minify, beautify JSON and convert to YAML with syntax error detection.
- [JSON Schema Validator - Validate JSON Against Schema Online](https://tools.scoreroute.com/tools/json-schema-validator/): Free JSON Schema validator. Validate JSON data against Draft-07, 2019-09, and 2020-12 schemas. Detailed error paths with JSON Pointer, all-errors mode, 100% private browser. AI cannot validate JSON against schema - we do.
- [SQL Formatter - Format & Beautify SQL](https://tools.scoreroute.com/tools/sql-formatter/): Free SQL formatter. Format and beautify SQL queries with proper indentation. Supports MySQL, PostgreSQL, SQLite.
- [XML Formatter - Format, Validate & Beautify XML Online](https://tools.scoreroute.com/tools/xml-formatter/): Free XML formatter and validator. Format, beautify, minify XML, convert to JSON, and validate well-formedness. Browser-based, no signup, 100% private.

## About DevTools Hub

DevTools Hub is a free collection of 150+ browser-based developer tools. No signup, no tracking, all processing happens in your browser. See [llms.txt](https://tools.scoreroute.com/llms.txt) for the full tool catalog.