JSON Formatter & Validator
Format, validate, and minify JSON instantly. Catch syntax errors, beautify messy JSON, or compress it for production. All processing happens in your browser.
Why Format JSON?
JSON is the standard format for APIs and data exchange. Well-formatted JSON is easier to read, debug, and maintain.
Debug API Responses
API responses often come minified. Format them to see the structure clearly and find the data you need.
Catch Syntax Errors
Missing comma? Unclosed bracket? The validator shows exactly where the error is so you can fix it fast.
Minify for Production
Remove all whitespace to reduce file size. Smaller JSON means faster network requests and less bandwidth.
Keep Data Private
Your JSON never leaves your browser. No data is uploaded to any server. Close the tab and it's gone.
How to Format JSON
Three steps to clean, readable JSON.
Paste Your JSON
Copy JSON from your API, file, or any source. Or upload a .json file directly.
Format or Validate
Click Format to beautify, Minify to compress, or Validate to check for errors.
Copy or Download
Copy the result to clipboard or download as a .json file.
Frequently Asked Questions
Common questions about our JSON formatter.