JSON minifier
Remove whitespace from valid JSON.
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Developer tools · FREE ONLINE TOOL
JSON formatter
Validate JSON and make it easy to read.
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How to use JSON formatter
Inspect JSON data with consistent two-space indentation. The tool parses your input before formatting it, so malformed JSON produces an error instead of a modified result. Parsing also normalizes the representation; do not use this formatter where the exact original bytes or very large numeric literals must remain unchanged.
01
Paste the JSON data
Use valid JSON with double-quoted keys and strings.
02
Validate and format
Generate a readable result with two-space indentation.
03
Copy or download JSON
Review the parsed values, then save the formatted.json output.
COMMON QUESTIONS
JSON formatter: useful answers
Can this format JavaScript objects with comments?
No. Standard JSON does not allow comments, single-quoted strings, or trailing commas, and the parser rejects them.
Can formatting change large numbers?
Yes. JavaScript parses numbers with finite precision. Very large integers can lose precision; encode exact identifiers as strings.