JSON Formatter & Validator
Format, minify & validate JSON — errors inline.
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Output
About this tool
JSON (JavaScript Object Notation) is the de-facto standard for structured data on the web. This tool formats (pretty-prints), minifies, and validates JSON with precise error locations so you can fix broken payloads instantly.
Common use cases
- Pretty-print API responses or log output for readability
- Minify JSON before sending to reduce payload size
- Validate config files or LLM outputs and locate syntax errors
Further reading
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