Code Formatters

Free Online Formatters

Beautify and format JSON, XML, YAML, HTML, CSS, SQL, JavaScript, and more. All formatting runs client-side — your code never leaves your browser.

26 formatters available

code
JSON Formatterarrow_forward
code
XML Formatterarrow_forward
code
YAML Formatterarrow_forward
html
HTML Formatterarrow_forward
html
HTML Pretty Printarrow_forward
palette
CSS Beautifierarrow_forward
palette
CSS Pretty Printarrow_forward
palette
SCSS Formatterarrow_forward
palette
LESS Formatterarrow_forward
database
SQL Formatterarrow_forward
javascript
JavaScript Pretty Printarrow_forward
javascript
JS Beautifierarrow_forward
code
TypeScript Formatterarrow_forward
code
Java Formatterarrow_forward
code
C# Formatterarrow_forward
code
PHP Formatterarrow_forward
account_tree
GraphQL Formatterarrow_forward
article
Markdown Formatterarrow_forward
article
Markdown to HTMLarrow_forward
article
HTML to Markdownarrow_forward
table
Markdown Table Generatorarrow_forward
code
JSON5 Formatterarrow_forward
code
WSDL Formatterarrow_forward
code
SOAP Formatterarrow_forward
code
JSON Pretty Printarrow_forward
code
XML Pretty Printarrow_forward

What Are Online Code Formatters?

Online code formatters (also called beautifiers) automatically reformat source code or data files with consistent indentation, spacing, and line breaks — making them readable, maintainable, and easier to debug.

Whether you receive minified JSON from an API, compressed CSS from a build tool, or messy XML from a legacy system, our formatters restore clean, human-readable structure in one click — entirely in your browser.

Common Use Cases

  • check_circleBeautify minified JSON API responses during development
  • check_circleFormat SQL queries for readability before code review
  • check_circlePretty-print XML config files from legacy systems
  • check_circleReformat CSS after running through a minifier
  • check_circleClean up auto-generated TypeScript or Java code
  • check_circleFormat GraphQL schemas for documentation

Frequently Asked Questions

What languages and formats can I format?

We support JSON, XML, YAML, HTML, CSS, SCSS, LESS, SQL, JavaScript, TypeScript, Java, C#, PHP, GraphQL, Markdown, and JSON5.

Will formatting change the meaning of my code?

No. Formatters only change whitespace and indentation — the logical structure and values of your code remain completely unchanged.

Can I format minified or compressed code?

Yes. Our formatters are specifically designed to expand and beautify minified, compressed, or single-line code into a clean multi-line format.

Is there a size limit for code I can format?

All formatting runs in your browser with no hard size limit. Very large files may take a moment to process depending on your device.

Developer Insights

From the Blog

View all articlesarrow_forward
Engineering8 min read

How to Use a JSON Formatter: The Complete Guide

Everything about JSON formatters — how they work, when to use them, and what to look for in a good online JSON beautifier.

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Engineering6 min read

Why JSON Formatting Matters More Than You Think

How proper JSON structure prevents production bugs, improves debugging, and makes code reviews faster.

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Engineering9 min read

How Our SQL Prettifier Works Under the Hood

A technical walkthrough of our SQL formatter and the engineering decisions that handle edge cases gracefully.

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Free Online Formatters & Beautifiers