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Formatter

DevTools Formatter tools beautify SQL, HTML, XML, and YAML, plus a regex debugger — all run locally in your browser, free with no signup.

SQL Formatter

Beautify SQL queries with automatic keyword indentation and line breaks; supports PostgreSQL, MySQL, SQLite, and more.

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HTML Formatter

Beautify HTML markup with indentation and line breaks; accepts full documents or fragments.

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XML Formatter

Beautify XML documents with indentation and line breaks; parse errors show a clear reason.

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YAML Formatter

Beautify YAML config files with consistent indentation and structure—great for Kubernetes and CI configs.

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Regex Debugger

Enter a regex and test text to highlight matches in real time, view capture groups, and inspect match indices.

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About this tool

Readable code and configs are easier to maintain. This toolset helps beautify queries and markup and debug regex patterns visually.

How to use

  1. Pick a formatter or the regex debugger.
  2. Paste SQL, HTML, XML, YAML, or a regex pattern.
  3. Copy the formatted or matched result.

FAQ

Which SQL dialects are supported?

PostgreSQL, MySQL, SQLite, and other common dialects with an in-tool selector.

What regex features does the debugger support?

JavaScript regex syntax with configurable flags and match highlighting.

Does formatting change data semantics?

No — only whitespace and indentation are adjusted.

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