Developer Tools / Format · Validate · Minify
JSON Toolkit
Make complex JSON easy to read. Validate, format, and minify without losing numeric precision.
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How to use it
- Paste JSON or choose a UTF-8 JSON file.
- Choose format, validate, or minify.
- Copy the result or download a JSON file.
Good to know
Large integers and decimal precision are preserved. Duplicate object keys are rejected to avoid silently discarding values. Nested structures are limited to 200 levels.
Validation uses strict JSON: comments and trailing commas are not accepted.
Need something else? Explore the toolbox →