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JSON Formatter
Validate · format · minify · repair — On-device processing.
Operation
Input
Output (formatted)
Formatted output appears here...§ How to use
How to format and validate JSON
Beautify, minify, validate and repair JSON — processed entirely in your browser.
Paste your JSON
Paste the JSON into the editor or load a file. It is parsed locally — your data never leaves the page.
Pick options
Choose indentation, optionally sort keys alphabetically, or enable auto-repair for malformed JSON.
Format
Click Format to beautify, or Minify to strip whitespace. Syntax errors are pinpointed by line.
Copy or download
Copy the result to the clipboard or download it as a .json file.
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