JSON Formatter
Format, validate, and beautify your JSON data with syntax highlighting and error detection.
Tools run in your browser. Shared links may include your input; check the URL before sharing.
How to use
- Paste JSON from an API response or configuration file into the input box.
- Choose the indentation and format for readability, or minify to remove extra whitespace.
This example illustrates one supported operation. Choose the matching mode and settings above; generated values and formatting may vary.
Example input or settings
{"name":"SkillPeek","active":true}Example result
{
"name": "SkillPeek",
"active": true
}Why does a trailing comma cause an error?
Standard JSON does not allow a comma after the last object property or array element. Remove the trailing comma and check that property names and strings use double quotes.
Can formatting or minifying change the data?
Both modes parse and serialize the JSON. Formatting adds line breaks and indentation so nested structures are easier to inspect. Minifying removes structural whitespace for transfer. Duplicate keys may collapse to the last value, and integers outside JavaScript’s safe range may lose precision.