JSON / Data Toolkit
Paste JSON to validate it, pretty-print or minify it, sort keys, and see helpful parse errors — everything stays in your browser.
Runs locally in your browser
Input processed locally.
What is the JSON / Data Toolkit?
The JSON toolkit validates and reformats JSON. It can pretty-print with configurable indentation, minify, and optionally sort object keys.
How to use it
- 1Paste or type JSON into the editor.
- 2Choose format, minify or sort keys.
- 3Copy the result or read the error message.
How it works
The input is parsed with the browser’s native JSON parser. Valid data is re-serialized; invalid input produces a precise error message. Nothing is uploaded.
Limitations & notes
- Extremely large documents may be slow in the browser.
- Comments and trailing commas are not valid JSON.
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