About the Handiwork JSON Formatter
The JSON Formatter beautifies, validates, and minifies JSON in your browser. Paste raw or minified JSON to pretty-print it with clean indentation, catch syntax errors with clear messages, or compress it into a single line for production — perfect for working with APIs and config files.
How to use the Handiwork JSON Formatter
- Paste your JSON into the editor.
- Choose Beautify to format it, or Minify to compress it.
- Copy the validated, formatted output.
Format vs. minify
Beautifying (pretty-printing) adds indentation and line breaks so JSON is easy for humans to read and debug. Minifying strips all unnecessary whitespace to produce the smallest possible payload, which is what you want when sending JSON over the network or embedding it in code.
Validate JSON and find errors
Invalid JSON — a trailing comma, a missing quote, or an unclosed bracket — breaks API requests and parsers. The validator points out where the structure is wrong so you can fix malformed JSON quickly instead of hunting through a wall of text.
Frequently asked questions
What is the difference between JSON and a JavaScript object?
JSON is a text format with strict rules: keys must be double-quoted strings and trailing commas are not allowed. JavaScript object literals are more permissive, which is a common source of JSON errors.
Is my JSON sent to a server?
No. All formatting and validation runs locally in your browser, so sensitive data in your JSON stays private.