Private by design
Make JSON readable.
Format, validate, and explore JSON instantly. Your data never leaves your browser.
Input
Formatted output
Your formatted JSON will appear here.Press Format JSON or ⌘ Enter
Drop a JSON file anywhere in the editor
More tools
One clean JSON workspace
Validate
Find malformed JSON with clear error locations.
Explore
Navigate nested objects in a collapsible tree.
Repair
Preview fixes for common JSON mistakes.
Compare
See structural changes between documents.
Query
Extract values using familiar JSONPath syntax.
Convert
Turn arrays of records into clean CSV files.
Simple, fast, local
A JSON formatter that stays out of your way
Paste a response, configuration file, or API payload and turn it into clean, indented JSON. Validation errors include the exact location whenever the browser can identify it.
Processing happens on your device, including formatting, repair, queries, and conversions. Nothing is uploaded, saved, or included in analytics.