Code Formatter
Format, beautify, and minify code in 22+ languages. 100% client-side.
Code Formatter & Beautifier — 20+ Languages, Free Online
Format and beautify code in 20+ languages instantly with inspectly.dev's Code Formatter. Supports JavaScript, TypeScript, HTML, CSS, JSON, Python, SQL, Go, Rust, Java, Markdown, and more — powered by Prettier and language-specific formatters.
Key Features
- Format JavaScript, TypeScript, JSX, and TSX with Prettier
- Beautify HTML, CSS, and SCSS with proper indentation
- Format SQL queries with keyword capitalization and alignment
- Validate and format JSON, YAML, and TOML
- Minify code to reduce file size for production
- Configurable indentation: 2 spaces, 4 spaces, or tabs
- Syntax highlighting for 20+ programming languages
- Copy formatted output or download as a file
Common Use Cases
- Cleaning up inconsistently indented code before code review
- Formatting minified JavaScript or CSS for debugging
- Normalizing SQL queries for readability
- Beautifying API response payloads for documentation
- Formatting code snippets before sharing in Slack or GitHub
- Quickly checking if a code snippet is syntactically valid
Frequently Asked Questions
How do I format JavaScript code online?
Go to inspectly.dev/formatter, paste your JavaScript code, select JavaScript as the language, and click Format. The tool uses Prettier to apply standard formatting rules. Results appear instantly.
What languages does this formatter support?
JavaScript, TypeScript, JSX, TSX, HTML, CSS, SCSS, JSON, YAML, Markdown, Python, SQL, GraphQL, Go, Rust, Java, C, C++, C#, PHP, Ruby, and Swift.
Can I format minified code?
Yes. Paste minified JavaScript, CSS, or JSON and the formatter will re-indent and add line breaks to make it readable. This is useful for debugging production code or understanding third-party libraries.
Does formatting change the behavior of my code?
No. Formatters only change whitespace, indentation, and line breaks — they never alter the logic or functionality of your code. The output is semantically identical to the input.