formatter.json
Back to ToolsJSON Formatter
Format, validate, and minify JSON in a split editor with line numbers.
Valid
Input293 B
How it works
- Format switches to a readable, indented view; Minify collapses it to a compact single line — useful when you need the smallest possible payload.
- Invalid JSON highlights the approximate error line in the input pane and shows the parser’s message with line and column when available — your input is never cleared.
- 2 spaces, 4 spaces, or tabs — pick whatever matches your project’s formatting convention.
- Parsing and formatting run entirely in your browser using the native JSON API — nothing you paste here is uploaded or stored anywhere.
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