✓ Format and beautify
Apply consistent indentation and line breaks to nested objects and arrays.
JSON Formatter
Format, validate, beautify, and minify JSON without uploading your data.
JSON input
Formatted JSON
✓ Formatted JSON copied
About this tool
✓ What is the JSON Formatter?
The JSON Formatter turns compact or poorly indented JSON into a clean structure that is easier to read. It validates syntax before formatting, highlights problems, and lets you choose two spaces, four spaces, or tabs without changing the underlying data.
✓ Validate syntax
Find malformed JSON with a readable error, line number, and column.
✓ Minify output
Remove unnecessary whitespace when you need a compact JSON payload.
✓ Work with files
Upload existing JSON and download the formatted result as a new file.
Questions answered
JSON Formatter FAQs
What does a JSON formatter do?+
A JSON formatter parses compact or inconsistently spaced JSON and rewrites it with predictable indentation and line breaks. The data and value types stay the same; only the presentation changes. This makes nested objects and arrays easier to read, debug, compare, review, and maintain.
Is this JSON formatter safe for private data?+
Yes. Formatting and validation happen locally in your browser. Your JSON is not uploaded to jsontoyaml.net or sent to an external conversion service. You should still follow your organization’s security rules and avoid copying secrets into any browser or device you do not trust.
Can the formatter repair invalid JSON?+
The formatter identifies invalid syntax and reports the approximate line and column, but it does not silently change broken data. Correct missing commas, mismatched brackets, invalid quotation marks, or trailing commas in the input. Once the document is valid, formatting becomes available immediately.
What indentation should I use for JSON?+
Two spaces are common for web projects because they keep files compact while preserving readability. Four spaces provide more visual separation, and tabs follow editor preferences. The best option is the style already used by your project or team. This formatter supports all three choices.