Structured Data Tools
Comprehensive collection of free browser-based tools for formatting, validating, comparing, querying, and converting JSON, XML, YAML, and CSV data — every tool runs entirely in your browser with no uploads, no sign-ups, and no server processing required.
JSON & XML Formatters
Free formatters for JSON, XML, and YAML with configurable indentation, key sorting, and syntax error detection.
JSON Processing
Free JSON minifier, key sorter, and dot-path flattener for compacting and restructuring data.
JSON Validation
Free JSON validator that pinpoints syntax errors with exact line, column, and character positions.
JSON Tree Viewer
Free interactive collapsible tree viewer for exploring and navigating nested JSON structures.
JSON & Text Diff
Free JSON and text diff tool with split and unified views, merge controls, and full undo support.
JSONPath Tester
Free JSONPath expression tester with real-time match results, value inspection, and path display.
JSON Key Extractor
Free JSON key and nested path extractor with type annotations for schema and migration planning.
JSON Converters
Free converters from JSON to CSV, XML, and YAML with configurable array and nesting options.
XML Formatter
Free XML formatter with consistent indentation, tag alignment, and malformed tag detection.
XML & YAML Validators
Free XML and YAML syntax validators for catching structural errors before production deployment.
YAML Formatter
Free YAML formatter with stable indentation, block scalar preservation, and comment handling.
CSV Tools
Free CSV parser and converter that handles quoted fields, embedded commas, and UTF-8 encoding.
Are these tools private and available offline?
Processing happens locally in browser memory. After the application has been cached, supported tools can continue working offline without sending your input to a server.