Format & Validate Tools
Make code readable or compact in one click. Format and validate JSON, XML and YAML with exact error locations, beautify or minify HTML, CSS, JavaScript and SQL, explore JSON as a tree, compare two JSON documents, validate against a JSON Schema, and test regular expressions, JSONPath and XPath queries. Code is parsed, never executed, and nothing you paste leaves your browser, so you can safely work with configuration files and API responses.
21 Format & Validate Tools
Most popular first.
- JSON FormatterPretty-print JSON with clear error locations.Open Tool
- JSON ValidatorCheck JSON syntax and find the exact error.Open Tool
- Regex TesterTest JavaScript regular expressions safely.Open Tool
- HTML FormatterBeautify and indent HTML code.Open Tool
- SQL FormatterBeautify SQL with dialect-aware formatting.Open Tool
- XML FormatterPretty-print or minify XML with error locations.Open Tool
- JavaScript FormatterBeautify JavaScript code with clean indentation.Open Tool
- CSS FormatterBeautify and indent CSS stylesheets.Open Tool
- JSON MinifierRemove whitespace from JSON to shrink it.Open Tool
- JavaScript MinifierMinify JavaScript and see the size saved.Open Tool
- CSS MinifierCompress CSS by removing comments and whitespace.Open Tool
- HTML MinifierRemove comments and extra whitespace from HTML.Open Tool
- JSON Tree ViewerExplore JSON as an expandable, keyboard-friendly tree.Open Tool
- JSON DiffCompare two JSON documents and list every change.Open Tool
- XML ValidatorCheck XML is well-formed and find the error.Open Tool
- YAML FormatterValidate YAML and re-indent it cleanly.Open Tool
- SQL MinifierStrip comments and extra whitespace from SQL.Open Tool
- XML MinifierStrip whitespace and comments from XML.Open Tool
- JSON Schema ValidatorValidate JSON against a JSON Schema.Open Tool
- JSONPath TesterRun JSONPath queries against your JSON.Open Tool
- XPath TesterEvaluate XPath expressions against XML.Open Tool
Frequently Asked Questions
What can I do with these Format & Validate tools?
Format, validate, minify and diff JSON, XML, HTML, CSS, JS, SQL and YAML.
Which Format & Validate tools are most popular?
The most used are JSON Formatter, JSON Validator, Regex Tester. Tools are listed here in order of popularity.
Do I need to install anything or sign up?
No. Each tool opens in your browser, works without an account and is free to use. Files and text are processed on your device unless a tool clearly states otherwise.
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