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JSON Minifier — Free Online Minifier

JSON Minifier strips out whitespace, comments and other redundancy to shrink your JSON for production. All processing happens client-side in your browser, with nothing sent to a server. Free, unlimited, and no registration needed.

How to use JSON Minifier

1. Paste your JSON.
2. Run the minifier.
3. Copy the compressed output and check how much you saved.

Frequently asked questions

Will minifying break my code?

It preserves behaviour while removing whitespace and comments, but always test the minified output before deploying.

How much smaller will my file get?

Typically 20-60% before gzip, depending on how many comments and how much whitespace the original had.

Can I reverse it?

Run the output through a formatter to make it readable again, though original comments cannot be recovered.

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