Text UtilitiesText FormattersFree Tool
JSON Minifier
Compress JSON to its smallest valid form by removing all whitespace, using the native JSON parser.
How to Use JSON Minifier
- 1Paste your JSON
- 2Click Convert
- 3Copy the minified single-line output
Frequently Asked Questions
It parses your input with JSON.parse(), then re-serializes it with no indentation — producing the most compact valid representation.
It shows 'Invalid JSON:' followed by the exact parser error, rather than attempting to minify broken syntax.
Yes — Formatter expands with 2-space indentation, Minifier compresses to one line. Both use the same real JSON.parse/stringify approach.
No — minification happens entirely in your browser.
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