Compact JSON output

JSON Minifier

Minify valid JSON by removing unnecessary formatting whitespace while preserving the parsed data and validating the source first.

Input

Paste JSON to minify

Local

Whitespace inside JSON string values is preserved. Formatting whitespace between tokens is removed.

Up to 5 million characters
Output

Minified JSON

Waiting for input
JSON result will appear here

Valid input produces structure details and reusable output. Invalid input shows a readable syntax diagnostic.