JSON Minifier
Compress JSON by removing whitespace. Free, private & fast – 100% in browser.
Why Minify JSON?
Minifying JSON removes whitespace, newlines, and indentation to reduce file size. Smaller files load faster, use less bandwidth, and are ideal for production APIs and config files.
Common use cases: API responses, configuration files, build outputs, and any scenario where human readability is not required.
Security & Local Processing
All minification runs entirely in your browser. Your JSON is never uploaded to our servers. No data is stored, logged, or transmitted.
Examples
Formatted JSON
Sample JSON with indentation and whitespace
{
"name": "John Doe",
"age": 30,
"address": {
"street": "123 Main St",
"city": "New York"
},
"active": true
}Minified Output
Same JSON with all whitespace removed
{"name":"John Doe","age":30,"address":{"street":"123 Main St","city":"New York"},"active":true}Privacy First
Frequently Asked Questions
What does JSON minification do?
Minification removes all unnecessary whitespace (spaces, newlines, tabs) from JSON, producing the smallest valid representation. Optionally, you can also remove null and empty string values for even smaller output.
Is my data safe?
Yes. All processing happens locally in your browser. No data is sent to any server.
What is 'Remove null & empty strings'?
When enabled, the tool strips null values and empty strings from objects. Use with caution – this changes the structure and might not be suitable for all use cases.