JSON Tools

Free, online JSON tools for formatting, validating, converting, and comparing JSON data. All tools work directly in your browser - no upload required!

JSON Formatter

Format, beautify, validate, and minify your JSON data instantly.

  • Format & beautify JSON
  • Validate syntax
  • Minify/compact JSON
  • Error detection
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JSON to CSV

Convert JSON data to CSV format for spreadsheets and databases.

  • Fast conversion
  • Headers option
  • Flatten nested objects
  • Download CSV file
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CSV to JSON

Convert CSV data to JSON format for API integration.

  • Multiple delimiters
  • Header detection
  • Type inference
  • Download JSON file
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JSON Diff

Compare two JSON files and see the differences highlighted.

  • Deep comparison
  • Find added/removed keys
  • Track value changes
  • Type change detection
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JSON Validator

Validate your JSON with detailed error messages and stats.

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JSON Minifier

Minify and compress JSON with savings statistics.

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JSON Tree Viewer

Visualize JSON structure in an interactive tree view.

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Schema Validator

Validate JSON data against a JSON Schema.

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JSON Path Tester

Test and evaluate JSONPath expressions.

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JSON Escape/Unescape

Escape or unescape special characters in JSON strings.

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XML to JSON

Convert XML data to JSON format.

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JSON to XML

Convert JSON data to XML format.

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JSON to YAML

Convert JSON data to YAML format.

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YAML to JSON

Convert YAML data to JSON format.

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Base64 Encode/Decode

Encode or decode Base64 strings safely (UTF-8 aware).

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URL Encode/Decode

Encode or decode URLs using percent-encoding.

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JSON Merge Patch

Apply RFC 7386 merge patches to JSON.

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JSON Patch

Apply RFC 6902 JSON Patch operations.

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JWT Decoder

Decode JSON Web Tokens safely in your browser.

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UUID/ULID Generator

Generate unique identifiers for testing.

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Random JSON Generator

Create random JSON arrays/objects for testing.

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CSV Delimiter Detector

Identify the most likely delimiter in CSV text.

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Why Use Our Tools?

  • 100% Free: All tools are completely free to use
  • No Registration: Use instantly without signing up
  • Privacy First: All processing happens in your browser
  • No Data Upload: Your data never leaves your computer
  • Fast & Efficient: Instant results with no delays
  • Works Offline: Once loaded, works without internet
  • No Limits: Process files of any size
  • Mobile Friendly: Works on all devices

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