JSON Formatter
Format and beautify JSON data
Frequently Asked Questions
How does the JSON Formatter work?
Paste raw or minified JSON and the formatter adds indentation and line breaks for readability. It validates the JSON structure and highlights syntax errors with line numbers. Choose 2-space, 4-space, or tab indentation.
Can I collapse and expand JSON sections?
Yes. The formatted output is interactive — click on objects or arrays to collapse/expand them. This is useful for navigating large JSON documents. You can also search within the formatted output.
Does the formatter fix invalid JSON?
The formatter highlights errors but does not auto-fix them. Common issues it detects: trailing commas, single quotes instead of double, unquoted keys, missing commas, and unclosed brackets. Error messages point to the exact location.
Can I sort JSON keys alphabetically?
Yes. Enable key sorting to alphabetize all object keys at every nesting level. This makes it easier to compare JSON documents and find specific fields. Original key order is preserved by default.
What is the maximum JSON size the formatter handles?
The formatter processes JSON up to 5MB in the browser. For larger files, performance may degrade. The tree view is limited to 10,000 nodes for responsiveness. All processing happens client-side.