JSON Formatter

Beautify, minify and validate JSON directly in your browser.

Developer tool guide

Format, minify and validate JSON in your browser

Paste JSON to turn compact data into an indented, readable structure or remove unnecessary whitespace for a smaller representation.

Toolyma parses the text in your browser. Valid JSON produces the requested result, while invalid syntax returns an error that helps you locate the problem.

How to use JSON Formatter

Paste the JSON.Insert an object, array or other valid JSON value into the input area.
Choose Beautify or Minify.Beautify adds two-space indentation; Minify removes formatting whitespace.
Review the result.Valid input appears in the result box, while invalid syntax displays a parsing error.
Copy the output.Use Copy result to move the formatted JSON to your clipboard.

Practical ways to use this developer tool

Inspect an API response

Make nested objects and arrays easier to scan during development.

Prepare compact data

Remove formatting whitespace before placing JSON in a request or configuration.

Check JSON syntax

Confirm that pasted data can be parsed as valid JSON.

Normalize formatting

Create consistent two-space indentation for reviews and documentation.

Behavior, privacy and limitations

Strict JSON: property names and string values must use double quotes, and trailing commas are invalid.
Two-space indentation: Beautify uses a fixed indentation of two spaces.
Minification only: Minify removes formatting but does not compress files or change the data structure.
Private processing: the pasted content and result stay in your browser and are not stored by Toolyma.

Frequently asked questions

Does the formatter validate JSON?

Yes. It parses the input before formatting it and displays an error when the syntax is invalid.

What indentation does Beautify use?

It formats nested JSON with two spaces per level.

Does Minify change my JSON data?

No. It removes formatting whitespace while preserving the parsed values and structure.

Can it format JavaScript object notation?

Only when the text is also valid JSON; JavaScript-only syntax such as comments or unquoted keys is not supported.

Is my JSON uploaded?

No. Formatting and validation run locally in your browser.