Compact JSON

JSON Minifier Online

Remove extra spaces and line breaks from JSON for compact storage, transfer, or embedding. JSON minification happens locally in your browser.

Minify JSONCompact outputNo upload

When to minify JSON

Smaller payloads

Compact JSON is useful when sending data between services or storing sample payloads.

Valid JSON only

The minifier parses your JSON first, so broken input is caught before compact output is created.

Switch anytime

Use Format to make JSON readable again, then Minify when you need a smaller version.

How to minify JSON

Paste JSON

Add your JSON into the input editor.

Press Minify

JSON Toolkit removes unnecessary whitespace while keeping the same data structure.

Copy result

Copy or download the compact JSON output for your workflow.

Need compact JSON?

Open JSON Toolkit and use the Minify button.

Open JSON MinifierFormatter page