Developer Tools
JSON, CSV, JWT, regular expressions, text diff, HTML entities and query strings. 9 free tools. Each one runs in your browser, shows a worked example table, and explains how it gets its answer.
Try it now: JSON Formatter and Validator
JSON formatter
Paste JSON and choose how to format it.
Result
Formatted JSON
{
"name": "Ada",
"tags": [
"math",
"code"
],
"born": 1815
}Valid JSON
Status
49 bytes in, 75 bytes out
Size
Private: Everything runs in this page. Nothing you type is sent anywhere or saved.
All developer tools
- JSON Formatter and ValidatorPretty-print, minify and validate JSON
- JWT DecoderRead the header and payload of a JSON Web Token
- Regex TesterTest a regular expression and list every match and group
- HTML Entity Encoder and DecoderEscape or unescape &, <, > and other characters for HTML
- CSV to JSON ConverterTurn CSV rows into a JSON array
- JSON to CSV ConverterTurn a JSON array into CSV for a spreadsheet
- JSON MinifierRemove whitespace from JSON and see the bytes saved
- Text Diff CheckerCompare two texts line by line
- Query String ParserSplit a URL query into names and values