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JSON formatter — beautify JSON online

Paste minified or messy JSON to get clean, properly indented output with syntax highlighting

JSONSQLJavaScriptTypeScriptCSSHTMLMarkdownYAML
JSON formatter
Input
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Formatted output
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Ctrl+Enter to format

JSON-specific

Why use a JSON formatter?

Minified JSON from APIs and configuration files is nearly impossible to read. QuickKit's JSON formatter parses your input, validates the structure, and outputs clean indented JSON with customizable tab width. It handles nested objects, large arrays, and Unicode characters correctly.

Questions

Frequently asked questions

Yes — if your JSON has syntax errors, the formatter highlights the error location and provides a description of what's wrong.
Yes — toggle the 'Sort keys' option to alphabetically order all object keys at every nesting level.
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