Paste valid JSON
Add a readable or partially formatted JSON document.
Compact JSON tool
Minify JSON Online
Parse a JSON document and serialize it without indentation or unnecessary spaces for compact storage, transfer, and test fixtures.
No upload Free to use Works on mobile
Data tool
JSON Minifier
Options
Minified JSON
0 resultsHow to use JSON Minifier
Minify safely
The document is parsed before whitespace is removed.
Copy compact output
Use the single-line result in requests, fixtures, or embedded settings.
Common uses
API requests
Prepare compact request bodies and test payloads.
Embedded configuration
Reduce whitespace in attributes or environment values.
Test fixtures
Create stable compact samples for automated tests.
JSON Minifier FAQ
Is JSON Minifier free to use? +
Yes. JSON Minifier is free to use without an account or usage meter.
Is my data uploaded or stored? +
No. The processing for this tool runs locally in your browser. Entered content is not sent to our server.
Does minifying compress the data? +
It removes JSON formatting whitespace but does not apply gzip or binary compression.
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