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Format, validate, and minify JSON instantly. Catch syntax errors, beautify messy JSON, or compress it for production. All processing happens in your browser.
Validate, format, and minify JSON with instant error feedback, right in your browser.
API responses often come minified. Format them to see the structure clearly and find the data you need.
Missing comma? Unclosed bracket? The validator shows exactly where the error is so you can fix it fast.
Remove all whitespace to reduce file size. Smaller JSON means faster network requests and less bandwidth.
Your JSON never leaves your browser. No data is uploaded to any server. Close the tab and it's gone.
Copy JSON from your API, file, or any source. Or upload a .json file directly.
Click Format to beautify, Minify to compress, or Validate to check for errors.
Copy the result to clipboard or download as a .json file.
Free AI optimization and data conversion tools.