JSON Formatter and Minifier
Validate, pretty-print, or compact JSON data.
How to use the JSON Formatter and Minifier
What does the JSON Formatter and Minifier do?
Validate, pretty-print, or compact JSON data; It applies this page-specific rule: validate, pretty-print, or compact JSON data.
Which inputs does this formatter use?
To validate, pretty-print, or compact json data, enter JSON input, Output mode, Indent spaces, JSON output; keep every value in the same example; where available, choose between Format with indentation, Minify to one line, 2 spaces, 4 spaces, 1 space to match the required format; select Process JSON when the values are ready; Start with a familiar case covered by this rule - The parser validates JSON first, then outputs either indented readable text or compact minified JSON - so the expected result can confirm the settings.
How should the formatter result be read?
For a result intended to validate, pretty-print, or compact json data, the parser validates JSON first, then outputs either indented readable text or compact minified JSON; read json output together with the original json input rather than as an isolated answer, and confirm that its units or structure match the intended use.
Does minifying change the JSON data?
When the goal is to validate, pretty-print, or compact json data, no.
Why does formatting fail?
When using the page to validate, pretty-print, or compact json data, a missing quote, comma, brace, or bracket makes the input invalid JSON.
Limits and accuracy
When using this formatter to validate, pretty-print, or compact json data, formatting changes whitespace only; it does not repair invalid syntax or change the data model; check the result in its intended destination before relying on it for important work; keep json input until the output has been checked in its intended destination. For a repeatable check when you need to validate, pretty-print, or compact json data, record JSON input alongside the final output and selected options.
What JSON Formatter and Minifier does
Validate, pretty-print, or compact JSON data.
Enter the value or list you want to check in the labeled controls. The JSON Formatter and Minifier result stays separate so you can review it before copying, downloading, or using it elsewhere.
Your work is processed in this browser tab. Keep the original whenever a conversion changes formatting, dimensions, or precision.
Frequently asked questions
Does formatting validate the JSON?
This implementation parse JSON, report syntax errors with positions, and serialize it with chosen indentation or no unnecessary whitespace. The output is validated pretty-printed or minified JSON.
Can object keys be sorted?
The tool handles only the format and rules described on this page. It uses JSON grammar and data types, unlike generic whitespace cleanup or source-code formatting. It does not contact a remote validation or lookup service.
Will minifying change string values?
Input is processed by JavaScript in the current browser tab. Nothing entered in the tool is sent to Plain Tools; keep the original when the transformation is lossy.