Input JSON
Formatted output (click to copy)
How to use the JSON Formatter
01 / Paste
Paste your raw or minified JSON into the left panel. Validation happens instantly as you type.
02 / Format
Click Format (or press Ctrl/Cmd+Enter) to get a prettified, syntax-highlighted result in the right panel.
03 / Copy
Click anywhere on the output panel or the Copy button to copy the formatted JSON to your clipboard.
Frequently Asked Questions
What is a JSON formatter?
A JSON formatter takes minified or unstructured JSON text and outputs it in a readable, indented format. It also validates the JSON, highlighting syntax errors so you can fix them before using the data in your application.
Why is my JSON invalid?
Common causes include: missing quotes around keys, trailing commas after the last item, using single quotes instead of double quotes, or missing brackets/braces. This tool highlights the exact error location.
What is the difference between Format and Minify?
Format (beautify) adds indentation and line breaks to make JSON human-readable. Minify removes all whitespace to reduce file size — useful for APIs and data transfer where bytes matter.
What does Sort Keys do?
Sort Keys alphabetically reorders all object properties at every nesting level. This is useful for comparing two JSON objects or keeping configuration files consistent.
Is my JSON data sent to a server?
No. All formatting and validation runs entirely in your browser using JavaScript's built-in
JSON.parse() and JSON.stringify(). Your data never leaves your device.