JSON Formatter
Format valid JSON with two-space indentation, remove unnecessary whitespace or check whether pasted JSON can be parsed.
How to use JSON Formatter
- Paste JSON into the text input.
- Select Format for two-space indentation, Minify for compact output or Validate for a syntax check.
- Read any parsing error; correct the input before running the selected action again.
- Review number precision before copying JSON containing large integer identifiers.
A practical example
{"name":"Auvatrix","active":true} → indented JSONLimitations and common mistakes
JSON needs double-quoted keys, no comments and no trailing commas. Large numeric values can lose precision in JavaScript.
Questions about JSON Formatter
Does validation check a JSON Schema?
No. Validate checks whether JSON.parse can parse the input; it does not validate against a JSON Schema.
Can I format comments or trailing commas?
No. Supply JSON with double-quoted keys, no comments and no trailing commas.
Can formatting change large integers?
Yes. Parsing uses JavaScript numbers; integer values beyond the safe integer range can lose precision. Store precision-sensitive identifiers as strings where appropriate.
Supported input and output
JSON text with double-quoted keys and strings; comments and trailing commas are not accepted.
Formatted JSON, compact JSON or a validation message, depending on the selected action.