Minify JSON to reduce file size instantly
Free online JSON minifier. Strip whitespace and comments from JSON to reduce file size for APIs and production use. Runs entirely in your browser.
A JSON minifier removes all unnecessary whitespace, line breaks, and indentation from JSON data. This reduces file size, making data transfer faster and more efficient.
Yes. All processing happens entirely in your browser. No data is ever sent to a server.
Typical savings range from 20% to 60% depending on how much whitespace the original JSON has. Heavily formatted JSON with lots of indentation sees the greatest reduction.
No. Minified JSON is semantically identical to formatted JSON. Any JSON parser will read both forms correctly.
Yes. The tool handles large JSON files efficiently in the browser. For files larger than 10MB, consider splitting them into smaller chunks.
Minifying removes whitespace at the text level. Compression (like gzip) reduces size at the binary level. For best results, use both: minify first, then serve with gzip compression enabled on your server.
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Last updated: January 2025