Code Formatting Tools

Code formatting reference and tools: indentation width, quote style, semicolons and line wrapping across XML, JSON, JavaScript and HTML, what runs safely in a.

代码格式化速查表 (Code Formatting) is a frequently consulted reference for developers. Keeping the reference and ready-to-use tools on one page cuts the cost of switching back and forth. All tools below run locally, are free, and need no sign-up.

Related Tools

🗂️XML FormatterPretty-print and validate XML with custom indentation. Reports the line number for unclosed tags, missing quotes and undeclared namespace prefixes, and can.
📜JS FormatterBeautify or minify JavaScript with proper indentation, handling arrow functions, template literals and modern syntax, with a choice of brace style and quotes.
⚡JavaScript RunnerRun JavaScript in your browser with console output capture. The sandbox isolates execution from the page and keeps a history so you can rerun experiments.