JSON Tools: Format, Validate, Convert and Minify JSON
A focused collection for API responses, configuration files and structured data workflows. Choose a JSON tool by the job you need to complete.
Choose a tool
28 browser-based tools are available in this collection. Open a tool to see its input, output and current size limit.
Free Online JSON to CSV Converter
JSON to CSV Converter is a browser-based tool for converting JSON data. Paste your input, review the result…
Free Online JSON to Excel Converter
JSON to Excel Converter is a browser-based tool for converting JSON data. Paste your input, review the…
JSON to SQL Converter
JSON to SQL Converter is a browser-based tool for converting JSON data. Paste your input, review the result…
JSON to YAML Converter
JSON to YAML Converter is a browser-based tool for converting JSON data. Paste your input, review the…
JSON to XML Converter
JSON to XML Converter is a browser-based tool for converting JSON data. Paste your input, review the result…
JSON to C Converter
JSON to C Converter is a browser-based tool for converting JSON data. Paste your input, review the result…
Free Online JSON to String Converter
JSON to String Converter is a browser-based tool for converting JSON data. Paste your input, review the…
Free Online JSON to Table Converter
JSON to Table Converter is a browser-based tool for converting JSON data. Paste your input, review the…
JSON to TypeScript Converter
JSON to TypeScript Converter is a browser-based tool for converting JSON data. Paste your input, review the…
JSON to Dart Converter
JSON to Dart Converter is a browser-based tool for converting JSON data. Paste your input, review the…
Free Online JSON to HTML Converter
JSON to HTML Converter is a browser-based tool for converting JSON data. Paste your input, review the…
Free Online JSON to PDF Converter
JSON to PDF Converter is a browser-based tool for converting JSON data. Paste your input, review the result…
CSV to JSON Converter
CSV to JSON Converter is a browser-based tool for converting JSON data. Paste your input, review the result…
Free Online XML to JSON Converter
XML to JSON Converter is a browser-based tool for converting JSON data. Paste your input, review the result…
YAML to JSON Converter
YAML to JSON Converter is a browser-based tool for converting JSON data. Paste your input, review the…
Free Online String to JSON Converter
String to JSON Converter is a browser-based tool for converting JSON data. Paste your input, review the…
Free Online Excel to JSON Converter
Excel to JSON Converter is a browser-based tool for converting JSON data. Paste your input, review the…
Free Online HTML to JSON Converter
HTML to JSON Converter is a browser-based tool for converting JSON data. Paste your input, review the…
JSON Formatter
JSON Formatter is a browser-based tool for formatting and beautifying JSON. Paste your input, review the…
JSON Validator
JSON Validator is a browser-based tool for validating JSON syntax. Paste your input, review the result, and…
Browser-only tools
JSONL Validator
Validate, format and convert JSON Lines in your browser.
Query String to JSON
Parse URL query parameters into readable JSON without sending the URL anywhere.
JSON to Query String
Convert a flat JSON object into an encoded URL query string in your browser.
JSON Schema Validator
Validate JSON against a practical browser-based JSON Schema subset.
JSONPath Extractor
Extract values from JSON with common JSONPath expressions in your browser.
JSONL to CSV Converter
Convert object-based JSON Lines into CSV locally in your browser.
JSON Duplicate Key Checker
Find duplicate object keys that a normal JSON parser may silently overwrite.
JSON Flatten and Unflatten
Flatten nested JSON into paths or rebuild a nested object in your browser.
Privacy-first developer workflows
Supported input is processed in the browser, so source data does not need to be uploaded to a server. Limits vary by tool and browser; the tool page shows the relevant behavior before you start.
How to choose the right tool
Use formatters and beautifiers when code is difficult to read, validators when you need to find syntax problems, and converters when another system expects a different data structure. For production bundles, use a minifier only after reviewing the readable source and testing the result.
Bookmark this collection for repeat debugging, API inspection, configuration review and data-cleanup tasks. Every tool links to adjacent workflows so you can move from validation to formatting or conversion without returning to the home page.