About the JSON Tools
JSON is the language of modern APIs, configuration files and NoSQL databases. These free JSON tools help you format and validate JSON, convert between JSON and CSV for spreadsheets, and decode JSON Web Tokens. They are built for developers debugging API responses, analysts exporting data and students learning how structured data works.
Which JSON Tool Do I Need?
Use the JSON Formatter to make an API response readable and find syntax errors. Use the JSON to CSV Converter when data needs to go into Excel or Google Sheets, or when a spreadsheet must be loaded into an app. Use the JWT Decoder to look inside authentication tokens. Combine them with the Diff Checker to compare two JSON responses after formatting both.