JSON Tools Online – Format, Convert, Validate & Transform JSON Instantly
JSON Tools Online gives you everything you need to work with JSON in one place. Format messy data, validate structures, convert between CSV, XML, YAML, and more—all right in your browser. No downloads. No setup. Just fast, reliable JSON tools built for developers, analysts, and data wranglers.
Format & Validate
Tools for formatting, validating, and beautifying JSON data
JSON Formatter
Format and beautify JSON data with customizable indentation
JSON Validator
Validate JSON syntax and structure with detailed error reporting
JSON Schema Validator
Validate JSON against a JSON Schema specification
JSON Minifier
Strip all whitespace and line breaks to produce the most compact valid JSON
JSON Linter
Analyze style issues against configurable rules (trailing commas, consistent quotes, key ordering, etc.)
Convert & Transform
Tools for converting between different data formats
CSV to JSON Converter
Convert CSV data to JSON with customizable options
JSON to CSV Converter
Convert JSON data to CSV format with field selection
YAML ↔ JSON Converter
Convert between YAML and JSON formats with ease
JSON → XML Converter
Serialize JSON to well-formed XML, letting you choose the root element
XML → JSON Converter
Turn any XML document into JSON, mapping attributes and text nodes
JSON → TOML Converter
Transform JSON data into TOML format for config-file compatibility
TOML → JSON Converter
Convert TOML documents (tables, inline tables) into JSON
JSON → Markdown Table
Render an array of objects as a GitHub-flavored markdown table
JSON → HTML Table
Generate a ready-to-use HTML <table> from your JSON arrays
JSON → SQL Inserts
Auto-generate SQL INSERT statements (MySQL, Postgres, etc.) from JSON
SQL → JSON Converter
Take raw SQL query results (CSV or row data) and output JSON
JSON → Query String
Encode a flat JSON object into a URL query string (?key1=val1&key2=val2)
Query String → JSON
Decode URL query parameters back into a JSON object
JSON Flattener
Turn nested JSON objects into a single-level map with dot-notation keys
JSON Unflattener
Reconstruct nested structure from flat dot-notation JSON
JSON Sorter
Recursively sort object keys alphabetically for consistent output
Analyze & Compare
Tools for analyzing, comparing, and exploring JSON data
Special Formats
Tools for working with specialized JSON formats