About the tool
OnlinTools JSON Formatter is a free browser utility for reading and checking JSON. Paste JSON or upload a file, choose indentation, optionally sort keys, then format or minify the data. Invalid input returns a parsing error. Copy or download the result without an account or installation. JSON processing runs locally in the browser. Large inputs remain subject to browser and device memory limits; this is a manual formatting helper, not an API client or full development environment.
Peter
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